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* FireAndBrimstoneHell: Zenith was this upon its first appearance. Averted once the BigBad puts it under new management, turning it into a smooth flat plane of obsidian and frigid air.
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Hurting Hero is a disambiguation
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* HurtingHero: Several Equestrian and Kaiju heroes have their baggage. Godzilla Junior is hauling around SurvivorGuilt that his continued life being a constant reminder his father died, knowledge that his powers make it unsafe to be around his mother; and internally yearns to stop fighting and just live in peace. But, because of a strong sense of responsibility to keep fighting for those who can't, he knows any peace he gets is just a brief respite.
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** In part 2 of the April Fools special, one of the worlds Pinkie Pie, Sonata Dusk, and Megalon visit on their dimension hopping adventure is a blend of ''WesternAnimation/TitanicTheLegendGoesOn'' and ''WesternAnimation/TheLegendOfTheTitanic''. The trio were disgusted and called it an atrocity, especially the rapping dog and the octopus. When they arrive in ''Anime/{{Pokemon}}'', Sonata calls the adults in that world irresponsible for letting ten year olds wander a wilderness full of creatures that could easily kill people unsupervised.
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** In part 2 of the April Fools special, one of the worlds Pinkie Pie, Sonata Dusk, and Megalon visit on their dimension hopping adventure is a blend of ''WesternAnimation/TitanicTheLegendGoesOn'' and ''WesternAnimation/TheLegendOfTheTitanic''. The trio were disgusted and called it an atrocity, especially the rapping dog and the octopus. When they arrive in ''Anime/{{Pokemon}}'', ''[[Anime/PokemonTheSeries Pokemon]]'', Sonata calls the adults in that world irresponsible for letting ten year olds ten-year-olds wander a wilderness full of creatures that could easily kill people unsupervised.
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** RaisedByHumans with a [[MuggleFosterParents human mother]]? Check. UpbringingMakesTheHero? Check. Considered one of the BigGood of his world? Check. Godzilla Junior takes some cues from {{Franchise/Superman}}, though without TheCape personality. Some readers have compared Godzilla Junior to a more jaded, mentally unwell but still moral [[{{Transformers}} Optimus Prime]] and WordOfGod cites [[{{Franchise/Metroid}} Samus Aran]] as an influence.
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** RaisedByHumans with a [[MuggleFosterParents human mother]]? Check. UpbringingMakesTheHero? Check. Considered one of the BigGood of his world? Check. Godzilla Junior takes some cues from {{Franchise/Superman}}, though without TheCape personality. Some readers have compared Godzilla Junior to a more jaded, mentally unwell but still moral [[{{Transformers}} [[Franchise/{{Transformers}} Optimus Prime]] and WordOfGod cites [[{{Franchise/Metroid}} Samus Aran]] as an influence.
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The Bridge is a crossover fanfic written by [[http://www.fimfiction.net/user/Tarbtano Tarbtano]], illustrated by [[http://faith-wolff.deviantart.com/ Faith-Wolff]] (with some additional illustrations by [[http://pyrus-leonidas.deviantart.com/ Pyrus-Leonidas]]), contributed by [=Skylark8756=], and proofread by Faith-Wolff and Lance Omikron, combining ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', ''Franchise/{{Godzilla}}'', ''Film/{{Gamera}}'', ''Film/PacificRim'', ''Franchise/UltraSeries'', and a few other Kaiju franchises. Timeline-wise, it begins some time after the events of "[[Recap/MyLittlePonyFriendshipIsMagicS4E23InspirationManifestation Inspiration Manifestation]]". Other future sidestories show also incorporate elements of the ''Franchise/JurassicPark'', ''Film/{{Carnosaur}}'', and many Syfy Channel Original Movies (Film/{{Dinocroc}} in particular) series in unrelated pieces taking place on Terra and ''Franchise/SailorMoon'' inspired events and expies in Equestria's Japan equivalent. The fanfic is currently in progress (latest chapter posted as of 6/12/2023), marked as incomplete currently with seventy chapters (51 normal chapters [[note]]some chapters are broken into multiple parts since they lead directly into each other[[/note]], 18 bonus chapters, and two One-shots) and one Q&A section published.
to:
The Bridge is a crossover fanfic written by [[http://www.fimfiction.net/user/Tarbtano Tarbtano]], Tarbtano]] (real name Jack Blackburn), illustrated by [[http://faith-wolff.deviantart.com/ Faith-Wolff]] (with some additional illustrations by [[http://pyrus-leonidas.deviantart.com/ Pyrus-Leonidas]]), contributed by [=Skylark8756=], and proofread by Faith-Wolff and Lance Omikron, combining ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', ''Franchise/{{Godzilla}}'', ''Film/{{Gamera}}'', ''Film/PacificRim'', ''Franchise/UltraSeries'', and a few other Kaiju franchises. Timeline-wise, it begins some time after the events of "[[Recap/MyLittlePonyFriendshipIsMagicS4E23InspirationManifestation Inspiration Manifestation]]". Other future sidestories show also incorporate elements of the ''Franchise/JurassicPark'', ''Film/{{Carnosaur}}'', and many Syfy Channel Original Movies (Film/{{Dinocroc}} in particular) series in unrelated pieces taking place on Terra and ''Franchise/SailorMoon'' inspired events and expies in Equestria's Japan equivalent. The fanfic is currently in progress (latest chapter posted as of 6/12/2023), marked as incomplete currently with seventy chapters (51 normal chapters [[note]]some chapters are broken into multiple parts since they lead directly into each other[[/note]], 18 bonus chapters, and two One-shots) and one Q&A section published.
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* [[{{Polyamory}}]]: Gigan, Adagio, and Gloriosa settle into this after the Winter Wars arc.
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* [[{{Polyamory}}]]: [[{{Polyamory}} Polyamory]]: Gigan, Adagio, and Gloriosa settle into this after the Winter Wars arc.
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* Polyamory: Gigan, Adagio, and Gloriosa settle into this after the Winter Wars arc.
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* Polyamory: [[{{Polyamory}}]]: Gigan, Adagio, and Gloriosa settle into this after the Winter Wars arc.
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* Polyamory: Gigan, Adagio, and Gloriosa settle into this after the Winter Wars arc.
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*** The windigos, having come from the same source, are naturally also this if not more so. They're nearly immune to harm and can dish out massive amounts of ice, especially when working together. Special mention goes to Eurus, who is essentially a kaiju from Equestria... with all the powers of a windigo. It's no wonder he's compared to the below Grand King Ghidorah.
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Fixing a greenlink.
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* [[ArtificialHuman Artificial Equestrian]]: [[spoiler: It's heavily implied Princess Celestia and Princess Luna were created by the Tree of Harmony, because they were found as foals in front of it with no parents.]]
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* [[ArtificialHuman Artificial Equestrian]]: [[spoiler: It's heavily implied Princess Celestia and Princess Luna were created by the Tree of Harmony, because they were having been found as foals in front of it the Tree of Harmony with no parents.]]parents. For her part, Harmony thinks of them as her daughters]].
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* KickTheSonOfABitch:
** Anguirus' CurbStompBattle against Garble's gang after Rainbow Dash helps soften them up and he reverts to his true form with her help. This is after Garble and company terrorized a summer campground and tried to eat several fillies and colts.
** The story goes out of its way to portray Grand King Ghidorah as a monstrosity. Seeing a SmugSnake like him getting '''absolutely trashed''' by a royally pissed off Kaizer Ghidorah was cathartic.
** After thoroughly establishing itself as absolute monster, Godzilla Earth's karma for killing billions of people and kaiju for no reason other than it could catches up to it ''hard''. [[spoiler:The Leviathan absolutely destroys it in their battle when it reaches full power and then spends the next few hours slowly dismembering it and eating it alive. According to WordOfGod, Leviathan demolished Anime Ghidorah as well.]]
** After a two-parter 2019 Halloween special goes out of its way to show Giranbo as a sadistic, child murdering, completely irredeemable villain, it's downright carthetic to see [[spoiler:Destroyah finally get the upperhand on her in the fight and end it by simultaniously drowning and ''dissolving'' her at the same time until there is nothing left.]]
** Anguirus' CurbStompBattle against Garble's gang after Rainbow Dash helps soften them up and he reverts to his true form with her help. This is after Garble and company terrorized a summer campground and tried to eat several fillies and colts.
** The story goes out of its way to portray Grand King Ghidorah as a monstrosity. Seeing a SmugSnake like him getting '''absolutely trashed''' by a royally pissed off Kaizer Ghidorah was cathartic.
** After thoroughly establishing itself as absolute monster, Godzilla Earth's karma for killing billions of people and kaiju for no reason other than it could catches up to it ''hard''. [[spoiler:The Leviathan absolutely destroys it in their battle when it reaches full power and then spends the next few hours slowly dismembering it and eating it alive. According to WordOfGod, Leviathan demolished Anime Ghidorah as well.]]
** After a two-parter 2019 Halloween special goes out of its way to show Giranbo as a sadistic, child murdering, completely irredeemable villain, it's downright carthetic to see [[spoiler:Destroyah finally get the upperhand on her in the fight and end it by simultaniously drowning and ''dissolving'' her at the same time until there is nothing left.]]
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* ArcWords: "At their core, all decisions are based on two conflicting forces, love and hatred."
* ArmorIsUseless: Completely averted. Where the armor various Equestrian characters are wearing saves them from being injured far more than if they weren't wearing it. It may not be enough to negate the attack entirely, but it does work.
** The aversion is evoked in Princess Cadance's actions, where she takes a moment before jumping into the fray to put on some plate mail.
** Monster X's bone armor and helmet saved him from multiple would-be killing blows from the more physically powerful Enjin.
* ArmorIsUseless: Completely averted. Where the armor various Equestrian characters are wearing saves them from being injured far more than if they weren't wearing it. It may not be enough to negate the attack entirely, but it does work.
** The aversion is evoked in Princess Cadance's actions, where she takes a moment before jumping into the fray to put on some plate mail.
** Monster X's bone armor and helmet saved him from multiple would-be killing blows from the more physically powerful Enjin.
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* ArcWords: "At their core, all decisions are based on two conflicting forces, love and hatred."
* ArmorIsUseless: Completely averted. Where the armor various Equestrian characters are wearing saves them from being injured far more than if they weren't wearing it. It may not be enough to negate the attack entirely, but it does work.
** The aversion is evoked in Princess Cadance's actions, where she takes a moment before jumping into the fray to put on some plate mail.
** Monster X's bone armor and helmet saved him from multiple would-be killing blows from the more physically powerful Enjin.
* ArmorIsUseless: Completely averted. Where the armor various Equestrian characters are wearing saves them from being injured far more than if they weren't wearing it. It may not be enough to negate the attack entirely, but it does work.
** The aversion is evoked in Princess Cadance's actions, where she takes a moment before jumping into the fray to put on some plate mail.
** Monster X's bone armor and helmet saved him from multiple would-be killing blows from the more physically powerful Enjin.
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** [[OneTrueThreesome Adagio, Gigan, and Gloriosa]] get together at the end of the Winter Wars arc. They mention working out the details later.
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They're only the villains for one arc. Big Bad Ensemble refers to multiple Big Bads throughout the story.
* GaleForceSound:
** Celestia putting her hoof down borders on this trope. And you thought Luna's Royal Canterlot voice was loud! When Celestia raises her voice, half the glass in the palace broke.
** Anguirus is in the same league when in his full form. His roar at point blank range is enough to rupture a dragon's eardrums and stun it.
** Celestia putting her hoof down borders on this trope. And you thought Luna's Royal Canterlot voice was loud! When Celestia raises her voice, half the glass in the palace broke.
** Anguirus is in the same league when in his full form. His roar at point blank range is enough to rupture a dragon's eardrums and stun it.
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* MakeMeWannaShout:
** Celestia putting her hoof down borders on this trope. And you thought Luna's Royal Canterlot voice was loud! When Celestia raises her voice, half the glass in the palace broke.
** Anguirus is in the same league when in his full form. His roar at point blank range is enough to rupture a dragon's eardrums and stun it.
** Celestia putting her hoof down borders on this trope. And you thought Luna's Royal Canterlot voice was loud! When Celestia raises her voice, half the glass in the palace broke.
** Anguirus is in the same league when in his full form. His roar at point blank range is enough to rupture a dragon's eardrums and stun it.
* AMatchMadeInStockholm: An example that is both exaggerated, defied, and justified. The Sirens and and the Dark Hunters kidnap [[spoiler:Princess Twilight Sparkle, after menacing her friends, after they mistake her for her human counterpart, who has stolen Sonata's heart. Seeing how badly Sonata was traumatized, and how much both groups care about her, as well as grasping at how it was a logical but huge misunderstanding Princess Twilight not only decides to help them, but willingly works with them to find her human counterpart. She lies to Gloriosa that she had always been their friend, and eventually offers Adagio the chance to return to Equestria, with the only quid pro quo that they don't kill anyone. It is justified however in that the sirens and hunters never do anything malicious to her, give her a lot of freedom, and X and Gigan, the very two who kidnapped her, apologize for it. Twilight for her part stays to help moderate them by her influence, making the best of the situation while not excusing her captors actions. It's obvious no one really wants to keep her captive, they just can't release her without risking an irrate Mothra and Celestia coming in guns blazing for vengeance. When Twilight is finally let go by them, she considers the Sirens and Dark Hunters to be her friends...[[ForgivenButNotForgotten but she still admonishes them for kidnapping her and causing so much havoc]], albeit ''very'' subtly, and makes it clear ''she's'' calling the shots from now on]].
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* StockholmSyndrome: An example that is both exaggerated, defied, and justified. The Sirens and and the Dark Hunters kidnap [[spoiler:Princess Twilight Sparkle, after menacing her friends, after they mistake her for her human counterpart, who has stolen Sonata's heart. Seeing how badly Sonata was traumatized, and how much both groups care about her, as well as grasping at how it was a logical but huge misunderstanding Princess Twilight not only decides to help them, but willingly works with them to find her human counterpart. She lies to Gloriosa that she had always been their friend, and eventually offers Adagio the chance to return to Equestria, with the only quid pro quo that they don't kill anyone. It is justified however in that the sirens and hunters never do anything malicious to her, give her a lot of freedom, and X and Gigan, the very two who kidnapped her, apologize for it. Twilight for her part stays to help moderate them by her influence, making the best of the situation while not excusing her captors actions. It's obvious no one really wants to keep her captive, they just can't release her without risking an irrate Mothra and Celestia coming in guns blazing for vengeance. When Twilight is finally let go by them, she considers the Sirens and Dark Hunters to be her friends...[[ForgivenButNotForgotten but she still admonishes them for kidnapping her and causing so much havoc]], albeit ''very'' subtly, and makes it clear ''she's'' calling the shots from now on]].
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They're only the villains for one arc. Big Bad Ensemble refers to multiple Big Bads throughout the story.
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** The three Windigos serve as the antagonists for the Winter War arc.
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** Godzilla Junior, Battra Lea, Anguirus, and Irys, with boosts from the Rainbooms and Sirens vs. Boreas-possessed X[[labelnote:Result]]The kaiju pin X down and Boreas is exorcised from him.[[/labelnote]]
** Godzilla Junior, Battra Lea, Anguirus, X, Megalon, Gigan, and Irys alongside the Rainbooms, Sirens, and Celestia and Twilight vs. Eurus[[labelnote:Result]]Eurus is destroyed by the Elements of Harmony.[[/labelnote]]
** Godzilla Junior, Battra Lea, Anguirus, X, Megalon, Gigan, and Irys alongside the Rainbooms, Sirens, and Celestia and Twilight vs. Eurus[[labelnote:Result]]Eurus is destroyed by the Elements of Harmony.[[/labelnote]]
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** Winter War arc: The [[{{Wendigo}} Windigoes Three]], [[TheBrute Boreas]], [[TheLeader Zephyrus]], and [[EvilGenius Notus]]. [[spoiler:[[EvilIsBigger Eurus]] ends up as the FinalBoss]].
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** Winter War arc: The [[{{Wendigo}} Windigoes Three]], Three, [[TheBrute Boreas]], [[TheLeader Zephyrus]], and [[EvilGenius Notus]]. [[spoiler:[[EvilIsBigger Eurus]] ends up as the FinalBoss]].
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** Winter War arc: The [[{{Wendigo}} Windigoes Three]], [[TheBrute Boreas]], [[TheLeader Zephyrus]], and [[EvilGenius Notus]]. [[spoiler:[[EvilIsBigger Eurus]] ends up as the FinalBoss.
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** Winter War arc: The [[{{Wendigo}} Windigoes Three]], [[TheBrute Boreas]], [[TheLeader Zephyrus]], and [[EvilGenius Notus]]. [[spoiler:[[EvilIsBigger Eurus]] ends up as the FinalBoss.FinalBoss]].
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** Grand King Ghidorah for his [[AntagonistTitle self titled arc.]]
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** King of Terror arc: Grand King Ghidorah for his [[AntagonistTitle self titled arc.]]Ghidorah.
** Winter War arc: The [[{{Wendigo}} Windigoes Three]], [[TheBrute Boreas]], [[TheLeader Zephyrus]], and [[EvilGenius Notus]]. [[spoiler:[[EvilIsBigger Eurus]] ends up as the FinalBoss.
** Winter War arc: The [[{{Wendigo}} Windigoes Three]], [[TheBrute Boreas]], [[TheLeader Zephyrus]], and [[EvilGenius Notus]]. [[spoiler:[[EvilIsBigger Eurus]] ends up as the FinalBoss.
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* ThreesomeSubtext: [[spoiler:It's heavily implied Gloriosa Daisy is getting as much a crush on Adagio Dazzle as she is Gigan, with those two also getting teased as having some feelings born of respect and also warming up to her.]]
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* ThreesomeSubtext: [[spoiler:It's heavily implied Gloriosa Daisy is getting as much a crush on Adagio Dazzle as she is Gigan, with those two also getting teased as having some feelings born of respect and also warming up to her. This is eventually confirmed in the Winter War finale.]]
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trope split
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* HundredPercentAdorationRating: Princess Celestia, as per canon and role as the Equestrian BigGood. Princess Luna and Cadance aren't far behind.
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* UniversallyBelovedLeader: Princess Celestia, as per canon and role as the Equestrian BigGood. Princess Luna and Cadance aren't far behind.
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The Bridge is a crossover fanfic written by [[http://www.fimfiction.net/user/Tarbtano Tarbtano]], illustrated by [[http://faith-wolff.deviantart.com/ Faith-Wolff]] (with some additional illustrations by [[http://pyrus-leonidas.deviantart.com/ Pyrus-Leonidas]]), contributed by [=Skylark8756=], and proofread by Faith-Wolff and Lance Omikron, combining ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', ''Franchise/{{Godzilla}}'', ''Film/{{Gamera}}'', ''Film/PacificRim'', ''Franchise/UltraSeries'', and a few other Kaiju franchises. Timeline-wise, it begins some time after the events of "[[Recap/MyLittlePonyFriendshipIsMagicS4E23InspirationManifestation Inspiration Manifestation]]". Other future sidestories show also incorporate elements of the ''Franchise/JurassicPark'', ''Film/{{Carnosaur}}'', and many Syfy Channel Original Movies (Film/{{Dinocroc}} in particular) series in unrelated pieces taking place on Terra and ''Franchise/SailorMoon'' inspired events and expies in Equestria's Japan equivalent. The fanfic is currently in progress (latest chapter posted as of 6/8/2023), marked as incomplete currently with seventy chapters (51 normal chapters [[note]]some chapters are broken into multiple parts since they lead directly into each other[[/note]], 18 bonus chapters, and two One-shots) and one Q&A section published.
to:
The Bridge is a crossover fanfic written by [[http://www.fimfiction.net/user/Tarbtano Tarbtano]], illustrated by [[http://faith-wolff.deviantart.com/ Faith-Wolff]] (with some additional illustrations by [[http://pyrus-leonidas.deviantart.com/ Pyrus-Leonidas]]), contributed by [=Skylark8756=], and proofread by Faith-Wolff and Lance Omikron, combining ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', ''Franchise/{{Godzilla}}'', ''Film/{{Gamera}}'', ''Film/PacificRim'', ''Franchise/UltraSeries'', and a few other Kaiju franchises. Timeline-wise, it begins some time after the events of "[[Recap/MyLittlePonyFriendshipIsMagicS4E23InspirationManifestation Inspiration Manifestation]]". Other future sidestories show also incorporate elements of the ''Franchise/JurassicPark'', ''Film/{{Carnosaur}}'', and many Syfy Channel Original Movies (Film/{{Dinocroc}} in particular) series in unrelated pieces taking place on Terra and ''Franchise/SailorMoon'' inspired events and expies in Equestria's Japan equivalent. The fanfic is currently in progress (latest chapter posted as of 6/8/2023), 6/12/2023), marked as incomplete currently with seventy chapters (51 normal chapters [[note]]some chapters are broken into multiple parts since they lead directly into each other[[/note]], 18 bonus chapters, and two One-shots) and one Q&A section published.
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disambiguated
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[[quoteright:320:https://static.tvtropes.org/pmwiki/pub/images/bridgenewcover.png]]
%%[[caption-width-right:320:some caption text]]
->''Matter cannot be created nor destroyed, only moved, displaced, changed into energy; or morphed into a new state....All four just happened...''
In the heart of the Pacific Ocean, an all out invasion-turned gang-war occurred without warning between the two largest factions of the planet's kaiju population. As all hell is breaking loose on Solgell Island, the Global Defense Force see an opportunity to test a new superweapon, trying to rid the world of some of mankind's biggest threats while they are all clustered together. As the faction leaders unleashed their most devastating attacks, Dimension Tide fired and the combined energy seemed to erase some of the factions' power players off the map.
But, as the world cheered or bowed their heads in loss, none of them took a moment to realize Dimension Tide's blast, long believed to be an artificial black hole; behaved nothing like what theoretical physicists believed it should.
Six of the most powerful beings on the planet weren't crushed, imprisoned, or vaporized; they were moved.
Moved, changed, shrunk; but still very much alive. Equestria just got six new denizens just as a horror from the kaiju home realm sets its sights on Harmony's world.
----
The Bridge is a crossover fanfic written by [[http://www.fimfiction.net/user/Tarbtano Tarbtano]], illustrated by [[http://faith-wolff.deviantart.com/ Faith-Wolff]] (with some additional illustrations by [[http://pyrus-leonidas.deviantart.com/ Pyrus-Leonidas]]), contributed by [=Skylark8756=], and proofread by Faith-Wolff and Lance Omikron, combining ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', ''Franchise/{{Godzilla}}'', ''Film/{{Gamera}}'', ''Film/PacificRim'', ''Franchise/UltraSeries'', and a few other Kaiju franchises. Timeline-wise, it begins some time after the events of "[[Recap/MyLittlePonyFriendshipIsMagicS4E23InspirationManifestation Inspiration Manifestation]]". Other future sidestories show also incorporate elements of the ''Franchise/JurassicPark'', ''Film/{{Carnosaur}}'', and many Syfy Channel Original Movies (Film/{{Dinocroc}} in particular) series in unrelated pieces taking place on Terra and ''Franchise/SailorMoon'' inspired events and expies in Equestria's Japan equivalent. The fanfic is currently in progress (latest chapter posted as of 6/8/2023), marked as incomplete currently with seventy chapters (51 normal chapters [[note]]some chapters are broken into multiple parts since they lead directly into each other[[/note]], 18 bonus chapters, and two One-shots) and one Q&A section published.
Readable [[http://www.fimfiction.net/story/121836/the-bridge-a-godzilla-mlp-crossover here]], though the story is still on-going and not yet complete. Tarbtano also has a [[https://www.youtube.com/user/Tarbtano YouTube account]] that he uses to release trailers, promos, and such.
Original cover art [[https://static.tvtropes.org/pmwiki/pub/images/4a194077d7dde83e04c2098d42dfdfa7.png here]]. Secondary cover art [[http://i1105.photobucket.com/albums/h352/tarbtano/lineuplightuplightsup_zpsbf75710f.png here]]
The Bridge also contains ''many'' different sidestories, spinoffs, and bits of supplementary info. A reading list that suggests what order to view them in relation to the main fic can be found [[https://docs.google.com/document/d/1GVqMklzy9mIKS057nsZje3dOgWOQ-HS6i8c1SByluzA/edit# here.]] Be aware that even the core story alone is ''huge''. As of 2020, it is the single largest piece of Godzilla franchise literature known.
In addition to its canon side material, The Bridge has also generated a wealth of RecursiveFanfiction. A list of links to and summaries of both the canon sidestories and recursive fics can be found [[Fanfic/TheBridgeSidestories here.]]
This fic's universe is one of the many alternate universes visited by the protagonists of ''Fanfic/EquestriaAcrossTheMultiverse'', with the twist that it is the ponies traveling to Godzilla's world and transforming into Kaiju. In later chapters, the alternate versions of the Kaiju become allies of the Jaunters and occasionally travel with them to other universes to help them.
!! This FanFic provides examples of:
[[foldercontrol]]
[[folder:Tropes A - M]]
* HundredPercentAdorationRating: Princess Celestia, as per canon and role as the Equestrian BigGood. Princess Luna and Cadance aren't far behind.
* AccidentalKiss: In a flashback, this happened between the human Rainbow Dash and Flash Sentry when she slipped and crashed into him.
* ActionGirl: Any of the female kaiju [[note]]Destroyah, Irys, Lea, Biollante, Titanosaurus, Tytanna, Megaguirus, Raiga, and Otachi[[/note]], Rainbow Dash, any of the female royal guards, and the alicorn princesses. By default all of the [[Franchise/SailorMoon Senshi guardians]] are this.
** Aria Blaze becomes one after TrainingFromHell and a new power made her [[TookALevelInBadass take several levels in badass, making her way stronger than before]].
* AdaptationalBadass:
** While [[spoiler:Bagan]] is certainly powerful in the unmade films he would have been in, his power in his last attempted canon introduction put him roughly on par with Destroyah and Burning Godzilla. Here, he is undoubtedly the strongest kaiju of all time.
** Many of the ''My Little Pony'' characters, particularly the alicorn princesses, got a similar treatment. While certainly powerful in her own right, Princess Cadance is able to go hoof to hoof against King Sombra in an upfront fight whereas in canon we've never seen her in a full on battle.
** Numerous kaiju not in the top tier are stronger than they were in their more recent films, most notably Gigan, Irys/Hyper Gyaos, Anguirus; and Rodan.
** [[Film/PacificRim The Jaegers]] are also this, despite the Anteverse Kaiju being far outclassed. Due to Earth being much better at making mecha and various reverse engineered alien tech, they're a bit tougher than they were in canon. According to WordOfGod have fusion reactors instead of fission reactors and have Space Titanium in their construction among other things. The biggest bonus, however, is they're much more practical to make than their canon counterparts due to this.
** [[spoiler:Grogar in canon was very powerful and a HeroKiller as is, but in the Bridge? He's the ''nexus of dark magic itself'' and in the [[PhysicalGod same tier as Bagan and Harmony]].]]
** [[Film/Godzilla2000 Io Shinoda]] is a psychic and Mysterian hybrid in this universe. Even as a little girl she could perform feats like mentally influencing someone to not see her to effectively grant her active camoflauge.
** [[Franchise/SailorMoon Queen Beryl]] was already a BigBad in her home series. Here she has all of her innate magical abilities but also enhanced speed, strength, and durability to make her a physical threat.
** All of the Guardian Beasts, including the aforementioned Rodan and Anguirus, get buffed up as well. In addition to their canonical powers, each of them now have elemental powers of some sort on top of [[SuperMode their Guardian Mode]].
* AdaptationExpansion: Both sides get a good helping of this.
** MLP: The origins and early years of Princess Celestia and Luna get more allusions and flashbacks then they have in canon. Additionally, we get more of an insight into the group dynamics for the siren trio and how their powers work. Additionally origins and expanded roles are given to characters such as the windigos, sirens, and Gaea Everfree.
** Kaiju: ''Everyone'' due to the extended continuity and timeline, as well as speaking in dialogue we can actually understand now. What sort of morality Godzilla Junior grew up to have, the line of succession for the Mothra, getting to see Destroyah when she's not in AxCrazy mode; etc. Monster X especially get this, due to his DiabolusExNihilo status in his movie giving us no insight into his backstory, personality, or dynamic between his forms, and making him a more fully fleshed character as a result.
* AdaptationNameChange: The Elias from the Rebirth of Mothra series and Cosmos from the Heisei Godzilla films are renamed to the more commonly used name for the guardian moth's fairies, the Shobijin.
* AdaptationalHeroism: Due to AlternateCharacterInterpretation on the author's part, numerous villainous kaiju were given more heroic/redeemable traits.
** When Xenilla a.k.a Spacegodzilla was shown to be in the story, many readers instantly assumed he was the BigBad given the myriad of fan works putting him as such. As such his portrayal in ''The Bridge'' as an AntiHero at best and AmbiguouslyEvil at worst was a tad surprising. [[spoiler: Also, see GoodAllAlong.]]
** Destoroyah's AxCrazy attitude has been tempered a bit due to a crystal formula courtesy of Xenilla and the Cutie Mark Crusaders starting to become her MoralityPet. [[spoiler:She eventually becomes flat out heroic.]]
** Gigan whose movie counterpart is frequently portrayed in fan works as AxCrazy as well as a DirtyCoward; but is portrayed in this story as a PunchClockVillain who fights for whoever keeps his body maintained. Also, see VillainousFriendship.
** Monster X whose [[Film/GodzillaFinalWars movie counterpart]] often gets a similar treatment and is thought of as sadistic as the original King Ghidorah. The Bridge version however is shown more as a PunchClockVillain who only fights because he does not remember having any other purpose. Also, see VillainousFriendship and VillainProtagonist. [[spoiler: [[AvertedTrope Averted]] with Kaizer Ghidorah who serves as X's SuperpoweredEvilSide.]]
** On the ponies' side, Prince Blueblood is a little haughty, but a ReasonableAuthorityFigure. His PrinceCharmless behavior in "The Best Night Ever" is explained as a jerk impersonating him. Does explain why Rarity seemed to like him again in [[Recap/MyLittlePonyFriendshipIsMagicS2E9SweetAndElite "Sweet and Elite"]] if we're to believe that was the real one.
** Gradually, the Sirens go from being selfish sea witches to developing a greater sense of camraderie and friendship over the course of the Enjin Arc, and they cease their desire to conquer the world. [[DownplayedTrope However, they still retain small amounts of their viciousness, haughtiness, and paranoia]]. [[spoiler: Their response to Sonata's heart being stolen was to go apeshit on Princess Twilight and the Rainbooms, whom they believe to be responsible, and later for Aria to beat Sci-Twi within an inch of her life]].
** The ''Spinosaurus'' from ''Film/JurassicParkIII'' was specifically created by Dr. Wu to keep Isla Sorna's carnivore population in check, and in general is not as bloodthirsty nor hostile towards humans as its film counterpart, just a neutral creature that hates intruders who cause a mess.
** [[Film/TheLostWorldJurassicPark Peter Ludlow]] never swindles [=InGen=] from his uncle, John Hammond, to become CEO. Due to the events of ''The Lost World'' occurring differently, he never goes to Isla Sorna, leading to the events of his demise. Instead he works with his uncle; becoming the chosen heir while playing a role in condemning [=BioSyn=] for their crimes. It's implied he later works with Simon Masrani to create Jurassic World.
** Gloriosa Daisy doesn't go crazy with power like in Legend of Everfree. This is justified since, thanks to the Dazzlings, she has managed to get business for Camp Everfree and is able to pay off most of her debts. Her friendliness in the story is genuine and not to cover for her growing stress.
* AdaptationalSexuality: Considering she gets flustered by both men and women, Gloriosa Daisy is bisexual.
* AdaptationalSpeciesChange:
** Baragon was a dinosaur in the films, but in The Bridge, he's been changed into a therapsid due to his mammalian features such as external ears. [[note]]All the ''Guardian Beasts'', Anguirus, Rodan, Raiga, Baragon, Yonggary, Varan, and Gamera, are chimeras of multiple species with a single species as a base.[[/note]]
** The Mysterians are changed from a unique alien race fleeing a nuclear war ravaged planet to Xilian refugees who left their homeworld centuries ago to run from Grand King Ghidorah.
** The Mutants in ''Final Wars'' are the result of a gene implanted in humanity by the Xilians. In The Bridge, they're the result of ''Film/TheMysterians'' being allowed to incorporate into Earth's society and interbreeding with humans, producing Xilian [[note]]In this continuity, Mysterians are a subtype of Xilians who fled their planet centuries ago[[/note]]- Human hybrids. Miki Saegusa and Io Shinoda are also changed from being pure human to {{Half Human Hybrid}}s resulting from the same interbreeding, along with all the other psychics from the ''Heisei series''. [[Film/{{Carnosaur}} Dr. Jane Tiptree]] is revealed to be another hybrid, one of the first born from the aforementioned unions.
** In one "Tales of the Amalgam'verse" showcasing ''Franchise/JurassicPark'' in this continuity, the ''Velociraptors'' have been re-identified as ''Deinonychus'' since that is the genus the movie's raptors were more based on. A follow-up timeline which added in events of the first two {{Film/Carnosaur}} films and the novel similarly changed the ''Velociraptors'' from the second movie to ''Deinonychus''. Additionally the Tyrannosaurid that rampaged down [[Film/TheLostWorldJurassicPark San Diego in 1997]] was changed to a ''Tyrannosaurus bataar'' [[note]]also known as ''Tarbosaurus bataar''[[/note]]- ''Tyrannosaurus rex'' hybrid as the offspring of the two species present in the ''Carnosaur'' novel.
** Film/{{Dinocroc}} is revealed to exist and have Suchomimus in its genetic structure, a sign of illegal dinosaur cloning.
* AdaptationOriginConnection: Multiple!
** Baragon, Anguirus, Rodan, Raiga, Yonggary, Varan, and Gamera are all Guardian Beasts created by the BenevolentPrecursors to FlingALightIntoTheFuture [[spoiler:and stop Bagan when he eventually escaped his prison]] in this continuity, whereas in canon only Gamera was that.
** Megalon and Gigan are both Nebulan cyborgs, whereas originally their only connection was their masters being allies.
** [[https://www.fimfiction.net/blog/764364/tales-of-the-amalgamverse-monster-x-vs-ultraman-belial-2-angels-and-demons Tales of the Amalgam'verse: Angels and Demons]] ties Gigan's creation to the Ultraman franchise, being engineered in response to the Ultra and by reverse engineering the teleporter and unique alloys found in Ultraman Belial's Giga Nizer Staff; even having his informal name derived from it [[note]]'''Giga N'''izer -> "Giga N." -> Gigan[[/note]]. Subverted however as while he uses the Final Wars design, his creators and masters are not the Xilians but the M Nebulans as per the Showa continuity; though the Xilians did assist in creating him.
** Flash Sentry is a childhood friend of Moonbeam and Starlight Glimmer and Fancy Pants is sort of a father figure to the sisters, as Flash's father Stalwart Sentry and Fancy Pants once rescued the Glimmer siblings as children.
** Grogar was revealed to be the creator of the Windigos, [[spoiler:and the Windigos conceived the Sirens via raping the mermare princesses, making the sirens windigo-mermare hybrids.]]
** [=G-Force=] from the [=1990s=] Godzilla films is the direct predecessor to the Global Defense Force and its subdivisions like the [[Film/PacificRim Pan Pacific Defense Corps]] and [[Franchise/MonsterVerse Monarch]], being rebranded and refocused by Commander Aso after he cited Godzilla Junior was not their enemy and they had other things to worry about.
** [=M.O.G.U.E.R.A.=] in the films was the first of its kind. In the Amalgam Universe because the Mysterians arrived in the [=1950s=] with their Moguera mecha, which was a repusposed Xilian mining machine. It was damaged beyond repair but some of its technology went on to the superweapons later made by [=G-Force=]. The [=1990s=] machine was modeled off it as many Mysterians and Mysterian hybrids worked in [=G-Force=].
** Due to the title of Gaea Everfree being a LegacyCharacter, Wysteria Daisy is now tied to Sunset Shimmer [[spoiler:as the first bearer of the Element of Empathy.]]
** Giranbo is reimagined as an ancient enemy of Mothra. [[spoiler:She's also heavily implied to have been the one who gave ponies the idea Nightmare Moon was a ChildEater.]]
** Belvera from the Rebirth of Mothra series is incorperated to the events of the Heisei Godzilla saga as Battra's faerie assistant and older sister to Mothra's twin faeries. The Cosmos from the 1990s Godzilla and Mothra movie are also retconned into being Moll and Lora from the Rebirth trilogy.
** Grand King Ghidorah is tied to every other "Ghidorah" in canon. [=DesGhidorah=] was his younger brother and [=Monster X/Kaizer Ghidorah=] were created from his blood through an experiment. The Futurian's artificial King Ghidorah, created from mutant Dorats, was engineered from Grand King Ghidorah's historical data.
** Harmony created the Crystal Heart, Elements of Harmony, the Equestria Girls World's Elements of Harmony, the [[Anime/SailorMoon Silver Crystal]], [[spoiler:and Celestia and Luna]]. Meaning almost all heroes and heroines in Equestria's multiverse that use some powerful relic of benign magic can be tied back to her.
* ADayInTheLimelight:
** ''"Sound of Thunder"'' largely acts as this for Raiga. Being a non-Toho kaiju from a well made, but still small time film; she was virtually unknown by the fandom. Multiple readers at first mistook her for an original character.
** ''"Omake: Gojira tai Chibi-Tsuki - Furīkī Furaidē "'' is one for Chibi Moon and the Sailor Moon {{Expy}} cast.
** ''The Gumiho arc'' is one for Ki Seong, Applejack, along with Anguirus. While the three have all appeared previously, this focus arc pit the farmpony, kaiju, and tea shop kirin up against a nightmarish fox demon that had followed Seong to Equestria from her homeland and menaced Ponyville.
* AfterlifeWelcome: Subverted. [[spoiler:If they were dead already themselves, the deceased parents and family members journey down from the afterlife to welcome and reunite with the children who's souls have been trapped inside Giranbo's graveyard.]]
* AnAesop:
** Chapter 40, "Hero" is about forgiveness and atoning for one's misdeeds.
** The Ghidorah Arc in general and especially in the finale are about remembering but moving on from the past when bad things happen.
** The 2018-2019 holiday special, ''"Legacy of the Everfree"'' is about being able to empathize with others.
* AffectionateNickname: Mothra Lea and Godzilla Junior are old friends, resulting in them calling each other ''Goji'' and ''Lele'' respectively. Alicorn sisters Princess Celestia and Princess Luna also get playfully called "Celly" and "Lulu" by the other.
* AllPartOfTheShow: In the human world, Photo Finish witnessed the battle against Enjin in the hospital, but she assumed a movie was being filmed.
* AllJustADream: [[spoiler:The events of Junior and Zilla Jr. fighting Godzilla Earth alongside Legendary Godzilla and Showa Godzilla seem to be this when Zilla Jr. wakes up with Junior's telepathy explaining the shared dream...but then [[OrWasItADream both Junior reveals both have healing scars from where they died in the fight]]. While exactly ''what'' happened is unclear, it was no ordinary dream.]]
* AllYourBaseAreBelongToUs:
** The gyaos flock attacking Canterlot.
** [[spoiler: Bagan setting a trap to attack the BigGood, Harmony, directly and invading the ascension realm inside the Tree of Harmony. He's unable to defeat her, though does succeed in cutting her off from Equestria for a time.]]
* AlternateContinuity:
** The author combined several different continuities to create the universe that the kaiju in this story hail from, which he's dubbed the ''Amalgam Universe''. It uses the Heisei Godzilla series as the base, but neatly ties in the Rebirth of Mothra trilogy, Pacific Rim, most of the Millennium age Godzilla series, the Legendary Pictures reboot, the Heisei Gamera series; and numerous single-movie kaiju names both from Toho and other companies. There's plenty of continuity mixing between franchises as well, with some changes that still make a lot of sense (for instance, Gamera is retooled into a Guardian Monster from ''Film/GodzillaMothraKingGhidorahGiantMonstersAllOutAttack'', replacing Mothra, who already existed). The full timeline is viewable [[http://www.fimfiction.net/blog/345509/the-bridge-kaiju-amalgam-universe-timeline here]].
** On the MLP side, the story takes place during the show's run with the kaiju entering Equestria midway through Season 4. It also incorporates much of the IDW comics and illustrated books than the later seasons of the show do. Additionally, some characters from other generations like Generation 3's Rainbow Dash, mother of the Generation 4 one, [[spoiler: and G1's Grogar]] show up. There are also bits and pieces of other series like a version of {{Franchise/SailorMoon}} being incorporated.
* AlwaysABiggerFish:
** Garble and his gang of teenage dragon bullies terrorize a pony camp until they are interrupted by the larger and more powerful Anguirus.
** The Anteverse kaiju ended up running into this, as they had not only the Jaegers to deal with but Kiryu, other reconstructed UN robots, and the heroic kaiju as well. Trespasser ended up ticking Junior off and got ''[[CurbStompBattle destroyed]]''. [[spoiler:Multavore had the misfortune of being killed ''the moment she entered the universe'', resulting in Junior wrecking the Precursor's production facility on the other side.]]
* AmbiguousEnding:
** The end of the ''"Rise and Fall of C.C.I"'' blog covers the events of the Amalgam Universe's version of ''Film/Godzilla2000''. In it the end, Mitsuo Katagiri and Godzilla Junior come face to face again for the first time in years. Katagiri had tortured Junior in his toddler days with a shock collar and it's clear the now adult Godzilla remembers him. Junior walks up to the building Katagiri was standing on and they stare each other down for a time with Katagiri calmly speculating how Godzilla will take his revenge. However Godzilla turns and walks off, but his tails brushes up against the building and Katagiri falls to his death. Whether or not Junior intentionally caused the fall, if he was just weary from the fight with Orga and it was an accident, or if Katagiri jumped by his own volition is left unanswered.
** The ending of the 2018 Halloween special. WordOfGod confirmed [[spoiler:The Leviathan killed Godzilla Earth and Ghidorah, however it was never clarified if it headed Haruo's prayers and pleas to save the Aratrum before engaging the other kaiju. It's also left ambiguous exactly ''what'' happened, as it ends with Junior and Zilla Jr. waking up alive and not fused into Leviathan, but still bearing wounds from how they died against Godzilla Earth.]]
* AmbiguousSituation: After the two settle their differences and find they work together beautifully as a flight team, are Rodan and Rainbow Dash in a relationship or not? Rainbow has Rodan shack up in her house, both know the others needs quite well with, they get along great, the specials even show they share a bed and shower together. Rainbow seems to get "territorial" around him when Lightning Dust or Gilda tried to lure him to their team but that could just be because she knows them and is defending a clueless friend. Yet, they seem adamant they're just besties and wingmates and deny any romantic notions. Are they trying to hide it, are they roommates that are genuinely clueless to how they come off, or is there nothing going on?
* AnArmAndALeg: Twice.
** Hyper Gyaos used her beam to slice off Gaira's hand when he tried to ambush her. He does regenerate it though.
** Gigan loses both arms [[spoiler: in his last stand against Kaizer Ghidorah. He later has to get emergency repairs for it among other damages.]]
* AncestralWeapon: Downplayed example. Ardent Sentry's weapon, the Hurricane Lance, [[spoiler:which originally belonged to her father, Commander Hurricane]], has been passed down through generations of the Sentry family when members of the family became Captains of the Guard like Ardent was; making it a de-facto heirloom. Though the weapon is ordinary, it is very durable and has been maintained through the years, and is famous for never being used against an innocent. Though the weapon is for the Captain of the Guard, not just specifically the Sentry line, so not every bearer was a Sentry; just often trained by or trained one like Captain Blueberry Frost being Captain Stalwart Sentry's student.
* AncientEvil: Most of the villains are either extremely long-lived or have been sealed away for very long periods of time.
** Kaizer Ghidorah is almost 400 years old.
** Queen Chrysalis, Lord Tirek, King Sombra, Discord, and [[Franchise/SailorMoon Queen Beryl]] are all roughly 1000 years old.
** Grand King Ghidorah and [=DesGhidorah=] are least 65 million old given the were partially responsible for the non-avian dinosaurs going extinct.
** [[spoiler:Grogar and Bagan are both billions of years old.]]
** The Four Windigos, Notus, Boreas, Eurus, and Zephyrus, are all multiple thousands of years old.
* AndShowItToYou: One of Gigan's earliest memories after getting mauled by Kaizer Ghidorah is waking up on the operating table and seeing his own heart being replaced.
* AngelsDevilsAndSquid: [[spoiler:The Nexuses of Dark Magic fit this. Harmony is beautiful, angelic entity and GodOfGood, Grogar is a malignant demonic beast in the shape of a ram and GodOfEvil, Bagan is the most alien-looking of the three and also a GodOfEvil. All three are equals in rank and power, though Bagan is from a separate universe.]]
* AntiMagic: Siren and mermare song magic's effectiveness on kaiju is shoddy at best.
** Monster X has a PTSD-like flashback when Sonata tried to control him with the original [[ThePowerOfHate hate-powered]] song. [[spoiler: Aria's PowerOfLove magic works much better.]]
** Flash mob of mermares tries to sing songs meant to communicate their... risque desires. Result? [[spoiler: All Godzilla Junior can hear is [[MythologyGag "Shooby doo"]]]]
* ApocalypseMaiden: [[spoiler:It turns out the Alicorns are this in a sense: [[GodOfEvil Grogar]] was imprisoned by [[GodOfGood Harmony]] and while she naturally is not going to willingly release him, Alicorn Magic will work just as well to break his seal and other than Harmony seems to be the only thing that can.]]
* AprilFoolsDay: The "March 32nd" special involving a dimension hopping Sonata Dusk, Megalon, and Pinkie Pie as instructed by Discord. The SillinessSwitch is cranked up to eleven.
* ApologeticAttacker: Monster X to [[spoiler: Kaizer Ghidorah when they have a BattleInTheCenterOfTheMind after Kaizer tried to seize control of their body. With Aria Blaze's help, X is able to force him back into a mental prison. But after seeing glimpses of Kaizer's memories and the life he was trying to avenge, X whispers "I'm sorry." before Kaizer is sealed away, for awhile...]]
* ArcWords: "At their core, all decisions are based on two conflicting forces, love and hatred."
* ArmorIsUseless: Completely averted. Where the armor various Equestrian characters are wearing saves them from being injured far more than if they weren't wearing it. It may not be enough to negate the attack entirely, but it does work.
** The aversion is evoked in Princess Cadance's actions, where she takes a moment before jumping into the fray to put on some plate mail.
** Monster X's bone armor and helmet saved him from multiple would-be killing blows from the more physically powerful Enjin.
* ArcVillain: While the story has a central BigBad, each story arc has a defined villain after the status quo is established.
** Everfree and Canterlot Attacks: Gyaos Horde, specifically the Albino Hyper Gyaos in the Everfree attack and the Alpha Super Gyaos standing in for her in the Canterlot attack.
** Crystal Empire Arc: King Sombra
** Human World Arc: Enjin
** The Jeog, Ki Seong's ArchEnemy, becomes one upon arriving in Ponyville.
** Grand King Ghidorah for his [[AntagonistTitle self titled arc.]]
** Queen Beryl for ''"Gojira tai Chibi-Tsuki - Furīkī Furaidē"'' omakes.
* ArtShift: The illustrations taking place back in the kaiju's home dimension tend to be more detailed with black used for the outlines, to make the setting a little more realistic. For ones taking place in any of the Equestriam realms however, the detail is relaxed and colored outlines are used to fit the show's art style.
* [[ArtificialHuman Artificial Equestrian]]: [[spoiler: It's heavily implied Princess Celestia and Princess Luna were created by the Tree of Harmony, because they were found as foals in front of it with no parents.]]
* AssimilationBackfire: Nightmare really bit off more than she could chew when she tried to corrupt and take over [[spoiler: Godzilla Junior's mind.]]
* AsskickingLeadsToLeadership: How the Mutations work, strongest one leads. Xenilla is their leader simply because he's too powerful for any of them to challenge 1-on-1 and potentially win. Destroyah's the only member that could potentially beat him and she's loyal to him. Best shown by what happens the moment he and Destroyah are presumed dead after being hit with Dimension Tide's black hole: the rest of the faction instantly begin plotting to take over the fraction for themselves now that the two top dogs are both gone.
* AttackBackfire: Destroyah has a division ability that, when in full kaiju form, allows her to go from a single 120 meter tall monster to a dozen or so smaller monsters and swarm. When she tries to do this in her pegasus body, it results in her turning into a bunch of toddlers.
* AttackItsWeakPoint: Grand King Ghidorah is durable enough that nothing Irys, Megalon, Gigan can throw at him does more than knock a few scales off. They only manage to damage him after Irys cleaves off a line of scales as Megalon distracts Ghidorah, giving Gigan enough time to build enough momentum to hit the bare patch Irys cleared; cutting in deep enough to actually hurt Ghidorah.
* AttackOfThe50FootWhatever: Since this is a crossover with ''Godzilla'', this trope is most definitely a thing that happens.
** The first examples we get in Equestria feature both villainous and heroic versions (right after each other no less!). Garble and his gang experience greed growth and rapidly change into full size dragons. Cue an injured Rainbow Dash inadvertently causing Anguirus to revert to his true form to save the day.
* AudienceWhatAudience: Aria Blaze doesn't understand when Sonata Dusk breaks the fourth wall. Later, Gigan doesn't know what Megalon and Mane-iac are doing when they break the fourth wall. However, Gigan is briefly able to see the fourth wall and is horrified. Later, Rainbow Dash and Pinkie Pie don't know what Discord is doing when he breaks the fourth wall.
* AuraVision: An advanced alicorn spell to detect disguises. It's what shows Luna and Celestia what the Kaiju-Converts gathered really are. It also shows the magical potential or affiliation somepony has. The Mane 6 all have a brighter than average aura in the color of their respective Element of Harmony, Princess Cadance has a very bright, glimmering aura indicative of the Crystal Heart; and Celestia and Luna have blazing bright auras that contain sparks of their old Element ties.
* AuthorAppeal:
** The Sirens' loving description of the sea comes from the fact Tarbtano lived almost his entire life near the ocean, despite ironically being born in a desert.
** The scarf Monster X wears over his mouth in his human form is partly based on the fact Faith-Wolff likes Kakashi from ''Manga/{{Naruto}}''.
* BadassCreed: The Sentry family has: "A Sentry always does what's right. No matter what's happening, what we have planned, a Sentry always does what's right when they see the chance."
* BadassCrew: Irys, Gigan, and Megalon form one, managing to put up one hell of a fight against [[spoiler: '''Grand King Ghidorah''', actually managing to damage him. Later Monster X joining in during a rematch allows them to actually overpower him.]]
* BadassFamily:
** The Godzilla "Dynasty" is an unofficial example. The start was the original Godzilla now reborn as Kiryu being the grandfather, then his even more powerful son, Godzilla Senior. Senior then, by two cases of outside forces using his cells and then by adoption, "fathered" Biollante, Xenilla, and Godzilla Junior.
** The Sentry family line contains some of the most decorated and legendary stallions and mares in the history of Equestria's guards and law enforcement. Played straight with Stalwart Sentry, but subverted with his son Flash Sentry. Flash clearly has the heart for heroics, just not the opportunity yet.
** The Royal sister's family and family by choice. Princess Celestia and Luna are the most powerful of the ponies, and Celestia's honorary niece Cadance is no slouch either. Starswirl the Bearded served as the two's adoptive father and they were also raised by Equestria's original founders.
** Chibi Moon is quite a capable little filly, especially after she became Godzilla's pupil. Her mother and father as well as her godmothers all form [[{{Franchise/SailorMoon}} a certain team]] back in Neighpon.
* BadFuture: [[spoiler:A future version of Flurry Heart apparently comes from one where Bagan and Grogar are apparently both released and ruined the universes and killed several characters including her parents, though seemed to have been stopped from ''totally'' destroying them. Her goal is to [[SetRightWhatOnceWentWrong use her brief window to change the past to make things right.]]]]
* BallsOfSteel: Enjin is unaffected by Sonata's nutshot attempt.
* BattleInTheCenterOfTheMind: [[spoiler:Monster X gets into one with Kaizer Ghidorah for the right to control their body. With Aria Blaze's help, X wins.]]
* BattleInTheRain:
** The fic begins with one between Godzilla Junior and Xenilla.
** [[spoiler: Hyper Gyaos vs. the rest of her flock.]]
* BeamOWar:
** Godzilla and Xenilla were charging up for one when Dimension Tide hit.
** Mothra Lea and the then unnamed Irys get into one during their battle at the Castle of the Two Sisters, Lea's antenna beams vs Irys' sonic cutter. Due to them being too close, it ultimately explodes, blowing both back, though Irys took a good bit more of the explosion than Lea did.
** [[spoiler: In ''Sound of Thunder'', Raiga and Mirror Godzilla's battle climaxes with one of these with both characters using their respective ultimate attacks. The result is ultimately their combined attacks detonating but with Raiga managing to force the struggle in her favor far enough that Mirror Godzilla took the brunt of the blast]].
** [[spoiler:The ClimaxBoss fight against Grand King Ghidorah ends with the mortally wounded King Ghidorah unleashing a continent busting WaveMotionGun in an an attempt at TakingYouWithMe. Xenilla and Junior retaliate with a double Spiral Fire Ray, instigating one of these. [[BackupFromOtherworld The souls released from King Ghidorah and Harmony allow Godzilla Sr.'s soul to briefly return]] and add his Spiral Fire Ray to the mix, tipping the scales in their favor and destroying the King of Terror once and for all.]]
* BeautyIsNeverTarnished:
** Completely averted in Luna's fight with Godzilla. Over the course of the battle, the princess suffers a multitude of heavy and ''extremely'' [[http://faith-wolff.deviantart.com/art/Luna-v-Jr-Luna-s-Wounds-455356642 visible]] injuries. [[AfterCombatRecovery She recovered eventually,]] but is still in bandages for a few chapters. To be fair, she roughed up Junior [[http://faith-wolff.deviantart.com/art/Luna-v-Jr-Jr-s-Wounds-455355562 just as badly.]]
** Subverted with Blade Dancer, another Equestrian beauty, when she gets slashed across the face with a spear. It looks nasty at first, but Xenilla uses a healing crystal on her to mend the wound.
* BecauseYouWereNiceToMe: [[AmbiguouslyEvil Xenilla]] does make due on a promise Blade Dancer makes him swear on [[spoiler: to save Princess Cadance's life from King Sombra)]], after she frees him from his imprisonment. He even laments that it's the first time anyone has tried to do something directly for his benefit before. However, once freed, his way of showing gratitude is a tad unorthodox. [[spoiler: He throws her into his prison cell and locks it before leaving, rationalizing she'd be safe from the coming battle in there.]]
* BefriendingTheEnemy: Despite kidnapping her [[spoiler: Princess Twilight decides to befriend and work with the Sirens and the Dark Hunters. Justified since they only kidnapped her because they mistook her for Sonata's attacker and are only keeping her captive to deter retaliation from her kaiju allies. She does such a good job, that when the Sirens and Dark Hunters plan falls through, they let Princess Twilight take charge of them]].
* BehemothBattle: Considering half the roster have true forms over 80 meters tall, this is a given. Specific examples include-
** The opening fight, a full melee with almost every single member of the Terran Defender, Mutation, GDF, and Coalition factions slugging it out. Special focus on Godzilla Junior vs. Xenilla and Mothra, Anguirus, and Rodan vs. Destroyah. [[labelnote:Result]]Draw due to Dimension Tide hitting all six of them to unknowingly transport them to Equstria.[[/labelnote]]
** Anguirus with help from Rainbow Dash and Rodan vs. Gable's Greed Growth enhanced dragon gang [[labelnote:Result]]CurbStompBattle in the heroes' favor due to Anguirus knowing how to fight and being immune to dragon fire.[[/labelnote]]
** Mothra Lea with Twilight Sparkle and Spike vs. Albino Hyper Gyaos [[note]]later called Irys[[/note]], several Super Gyaos, and a few dozen Gyaos [[labelnote:Result]] With help from Twilight Sparkle and some quick thinking, Lea manages to critically injure the albino Hyper Gyaos and destroy the flock; but gets roughed up enough to put her out of commission.[[/labelnote]]
** Godzilla Junior with help from Princess Celestia and Luna vs. Several Hundred Super and normal Gyaos [[labelnote:Result]] Godzilla Junior just barely manages to kill all but a few of the gyaos and drives off the others before collapsing from exhaustion.[[/labelnote]]
** Irys, Gigan, and Megalon vs. Grand King Ghidorah [[labelnote:Result]] Grand King Ghidorah pummels the trio, though they do manage to get one good hit on him. He calls off the fight by granting Irys her wish but it's left ambiguous if this is due to his injury or boredom.[[/labelnote]]
** Pre-Amnesia Monster X vs. Grand King Ghidorah in the past [[labelnote:Result]]Monster X hangs in there for a time but he's hopelessly outclassed. This changes when he transforms into Kaizer Ghidorah, evening the odds. After a brutal fight where the two beat each other to near death, Kaizer Ghidorah tears one of Grand King's heads off.[[/labelnote]]
** Monster X with assistance from Aria Blaze vs. Enjin [[labelnote:Result]] Enjin begins to overpower Monster X, not helped by the Kaizer Ghidorah's personality attempting to hijack X's mind. A powered-up Aria launches an internal attack on Enjin and magically enhances X enough he can mentally overpower Kaizer. Monster X then tears out Enjin's core and frees Aria, disintegrating Enjin.[[/labelnote]]
** Grand King Ghidorah vs. Monster X then Monster X with Irys, Gigan, and Megalon [[labelnote:Result]]Stalemate victory for Grand King Ghidorah. While he would have lost, he achieved his goal of unleashing Kaizer Ghidorah and retreating.[[/labelnote]]
** Kaizer Ghidorah vs. Gigan, Irys, and Megalon and mentally Monster X [[labelnote:Result]] Dark Hunters narrowly win via forfeit as a Guardian Mode activated Irys stalemating a battered Kaizer Ghidorah and Monster X managing to get Kaizer Ghidorah to let go of his hatred. With no more reason to fight and accepting X was the better personality, Kaizer gives up.[[/labelnote]]
** Grand King Ghidorah vs. Godzilla Junior [[labelnote:Result]]Initial round was a solid victory for Grand King Ghidorah, but Junior got his HeroicSecondWind and activated his Burning form to keep fighting until Ghidorah dragged them both into the upper atmosphere.[[/labelnote]]
** Grand King Ghidorah vs. Burning Xenilla [[spoiler:And Godzilla Junior AND the spirit of Godzilla Senior]] [[labelnote:Result]]The Godzilla brothers with the help of their father's spirit manage to overpower and obliterate Grand King Ghidorah in a massive BeamOWar.[[/labelnote]]
** Destroyah vs Giranbo [[labelnote:Result]]Giranbo nearly comes close to winning, but with the help of the CMC and the ghosts of Giranbo's victims, Destroyah ultimately drags her underwater and dissolves her underwater Oxygen Destroyer style.[[/labelnote]]
* BenevolentBoss:
** Villainous example. The BigBad gets the loyalty of numerous evil kaiju not only by a show of force, but by offering and giving them exactly what they wanted most. Most pledged their service without hesitation. [[spoiler:However, it's ultimately a facade to keep their loyalty, Bagan is an OmnicidalManiac planning to destroy all life, including them, but needs their help regaining his full power before that.]]
** On the positive side, Godzilla junior is considered the [[TheGoodKing 'king']] of the terran kaiju, who follow him out of well-earned loyalty and respect. He and his highest ranking subordinates are genuine friends. Likewise Princess Luna and Celestia are well respected in Equestria and care greatly for their subject's well being.
* BenevolentPrecursors: The creators of the Guardian Beasts, who did so to [[spoiler:stop Bagan when he returns]], even though it'd be over one hundred thousand years in the future. Even moreso with the reveal that the Fae who were involved in this were essentially performing a HeroicSacrifice to do so.
* BequeathedPower:
** Enjin ensnares Aria Blaze with tentacles and starts pulling her towards his core for assimilation. Monster X grabs her and desperately tries to save her. Sensing that if this keeps up, he'll just get pulled in with her, she passes him her necklace, the source of her powers, then shoves him away, letting herself get absorbed. The power boost allows him to transform into his Kaiju form and defeat Enjin.
** Later, when Monster X starts losing his memories and getting possessed by Boreas, he somehow transfers his Kaizer Ghidorah personality to Aria's body, giving her a massive power boost.
* BewareTheNiceOnes: Xenilla comes to the conclusion, within a short time of arriving, that Equestria as a whole is this trope. He's not wrong.
* BilingualBonus: Several. Most notably the titles of several chapters ''Unbekannte Soldat'' (German for ''Unknown Soldier'') and ''Henkōten'' (Japanese for ''Changes'')
* BilingualDialogue: In ''Babysitter'', Godzilla Junior and Mariner "Chibi" Moon speak to each other in Japanese/Neighponese several times.
* BigBad:
** Many readers at first assumed Xenilla and Destroyah were the main villains of the story. Then when Red was introduced a lot of them thought he would be the main villain. [[spoiler: Turns out it's the being haunting Xenilla's nightmares and defeated Red before taking over Zenith. Eventually, it's revealed to be Bagan.]] However, [[spoiler:it seems that [[GodOfEvil Grogar]], the Shadow King, is being built up as another BigBad.]]
** ''A Sound of Thunder'' has [[spoiler:Mirror Godzilla]] as its big bad.
** Countess/Nightmare Mircalla serves as the main villain of ''A Shimmer in the Dark''.
** ''The Eclipse Times'' has Queen Chrysalis as the main antagonist, taking place during her first attack on Equestria a thousand years ago.
* BigBadEnsemble:
** [[spoiler:[[GodOfEvil Bagan and Grogar]] seem to be one, given Empress Flurry Heart contributes her BadFuture to ''both'' of them and they're implied to be on the same tier.]]
--> '''[[WordOfGod Tarbtano]]'''': [[spoiler:For a crossover this big, you thought I'd settle for one Big Bad?]]
** The three Windigos serve as the antagonists for the Winter War arc.
* BigBrotherInstinct:
** [[spoiler: Do not, under any circumstances threaten to kill Godzilla Junior in front of Xenilla.]]
** The Dazzlings have this for one another, and will stomp on anything that tries to harm them. [[spoiler: Aria beats Sci-Twi within an inch of her life for stealing Sonata's heart]].
* BigDamnHeroes:
** During the opening fight, Mothra and Anguirus do this for each other while fighting Destroyah.
** Anguirus transforming to save the campground from Garble and his dragons.
** Godzilla Junior transforming to fight off the gyaos horde converging on Canterlot.
** Xenilla tackling King Sombra out a window before he can stab Princess Cadance. She then armors up and flies into the fray to return the favor.
** Even more than a few AntiVillain characters get these. [[spoiler: Aria Blaze transforming into her SuperMode and unloading on Enjin to save human!Monster X. And then kaiju!Monster X bursting out of a lake to save Adagio Dazzle and Sonata Dusk from the similarly transformed Enjin.]]
** [[spoiler:Xenilla arriving in time to rescue Junior from falling to his death and back him up against Grand King Ghidorah.]]
** [[spoiler:The Mane Six, Princesses, and Kaiju Six all coming to save Junior and Xenilla from death as they're falling from the upper atmosphere after destroying Grand King Ghidorah.]]
* BigGood:
** As stated below (see TakeThat), Princess Celestia is not the 'Tyrantestia' seen in some other fanfics, especially at the time. Here she is a beloved [[TheHighQueen ruler]] who will [[RoyalsWhoActuallyDoSomething do whatever she can to protect her subjects]]. Helps she is more than strong enough to floor the kaiju-ponies with a magic burst when enraged. [[note]]The reason this is worthy of note is at the time Bridge first came out, giving Celestia the RonTheDeathEater treatment was ''extremely'' common in the MLP fandom and has only died down since.[[/note]]
*** Then there's the entity who brought King Caesar to Equestria long ago to fight Tirek, and has been providing advice and aid to both the ponies and some of the less evil kaiju since the story started. [[spoiler: It turns out to be Harmony, an avatar of the Tree of Harmony. At one point in the past, she also defeated [[GodOfEvil Grogar]] and sealed him away, as well as provided help to defeat his students. It's also implied she may have created Celestia and Luna.]]
** On the Terran side, Godzilla Junior and Mothra Lea both show shades of this amongst the Terran Defender kaiju; having been in the fight for their planet and its inhabitants the longest.
*** [[spoiler: Reijuu ''used'' to be this. Then it became known as [[FaceHeelTurn Bagan]].]]
* BittersweetEnding:
** ''"Sound of Thunder"'' has one. [[spoiler: Raiga and Mirror!Starlight Glimmer, along with some help from Mirror!Lightning Dust and Manehattan successfully fend off an assault from Mirror!Godzilla long enough for the city to evacuate. Mirror!Xenilla and Destroyah arrive to save them from Godzilla, but just before they can finish him off he is teleported to safety by Cadenza's crystal; meaning he'll be back.]]
** ''"Tales of the Amalgamverse: The Dark Queen"'' ends in Queen Beryl's plans being spoiled and the Senshi learning how to counter her new trick... But it comes at a cost of her beating all of them within an inch of their life and murdering their leader Golden Glow.
* BlackAndWhiteMorality / WhiteAndGreyMorality: While the core group of heroes and heroines from both sides are benevolent, the morality of the villains is all over the place. Some like [[BrokenBird Irys]] and [[NobleDemon Monster X]] have redeeming qualities, others like King Sombra and King Ghidorah are completely evil. [[spoiler:Then there's Bagan, who's an OmnicidalManiac, but convinced himself his actions aren't evil.]]
* BlasphemousBoast: Kaizer Ghidorah completely denies Grand King Ghidorah's [[AGodAmI claims to godhood]], while declaring himself the inversion.
-->'''Kaizer Ghidorah''': "You are no god, but I am the Devil."
* BlindingCameraFlash: Photo Finish subjects Irys to several.
* BlueAndOrangeMorality: Xenilla is a very tough nut to crack. He is completely honest, but can be brutally blunt with his words. He shows great dislike for both love and hatred, seeing them as controlling emotions; but at the same time he's far from stoic.
* BothSidesHaveAPoint: As shown by Godzilla Junior and Mothra Lea's fight against the gyaos hordes or Princess Cadance and Xenilla's fight with King Sombra, sometimes using lethal force ''is'' needed to stop a crisis situation and confronting an irredeemable evil. That said, as shown by [[spoiler: the change in characters like Xenilla, Destroyah, and Aria Blaze]], not all villains are pure evil; some can be forgiven and pull a HeelFaceTurn. Neither ThouShaltNotKill or SociopathicHero is the correct route in all situations.
* BreakingTheBonds:
** Godzilla Junior and Xenilla both humor their guards when they get arrested at different points in the story, then casually break their shackles.
** King Sombra shackles Princess Cadance with crystal constructs and boasts that even with her Alicorn strength, she won't be able to break free in time before he kills her. Xenilla arrives in time to tackle him away before he can stab her, then while the two are fighting, Cadance manages to break them.
** [[spoiler:Harmony wraps Bagan with a chain that becomes stronger the more evil the prisoner is. Bagan is able to break it, possibly because he considers himself AboveGoodAndEvil.]]
* BreakingTheFourthWall:
** Sonata Dusk is aware she's in a story, referencing the [[TeasingCreator author]] and the story reader's [[{{Shipping}} favorite activity]].
** During the Valentine Day's special, both Megalon and Mane-iac do this, pointing out that the dimension they're currently in is a comic book.
** When Discord shows up during the baby Destroyah outbreak, he uses a Kindle-Fire to check Tohokingdom and Website/ThisVeryWiki for information on what's happening.
** The non-canon" AprilFoolsDay special occurs when Megalon, Pinkie Pie, and Sonata Dusk all broke the fourth wall at the exact same time and end up beyond the barrier together. Discord is also there as the fourth wall's "moderator". [[spoiler:[[WesternAnimation/MyLittlePonyG3 Gen 3 Pinkie Pie]] is also a 'breaker' and helps them out in their quest.]]
* BreatherEpisode: Rodan and Rainbow Dash's ongoing story arc with the Neighagra Falls airshow largely could count as one as much like a slice of life episode from MLP, it doesn't have a villain trying to cause mayhem like the Gyaos, Sombra, and Enjin arcs; just a social obstacle to overcome.
* BrokenMasquerade: The Gyaos attack on Canterlot, and Godzilla's defense of it, ruins any chance Celestia had of keeping the kaiju presence in Equestria a secret.
* BroodingBoyGentleGirl: In a non-romantic sense we get a surprising inversion with [[spoiler: Monster X]] and Aria Blaze during their training together. Though both get their share of brooding, it's Aria doing most of it since Monster X is TheStoic most of the time. [[spoiler: It turns romantic later one when the crisis has passed and X becomes NotSoStoic]].
* BullyingADragon:
** Bold Rush repeatedly antagonizes Godzilla, even after it's clear his punches have no effect on him.
** Grand King Ghidorah bullies Monster X despite knowing he can transform into the more powerful Kaizer Ghidorah.
* TheBusCameBack: Many readers assumed the Sirens showing up in the Holiday special to be a one time deal and were surprised to see them return for a story arc taking place in the human world.
* CameBackStrong: The 1954 Godzilla as Ghost Godzilla in the backstory due to being resurrected by the souls of the dead from WWII. To note, he's so powerful even Junior wouldn't have been a match for him alone and was as strong if not stronger as Grand King Ghidorah. It took Junior, Gamera, and Anguirus fighting him together to finally put him back down.
* CanonDiscontinuity: Due to being released well before it aired, the sirens' history with Starswirl the Bearded follows the ''ComicBook/MyLittlePonyFiendshipISMagic'' version instead of [[Recap/MyLittlePonyFriendshipIsMagicS7E26ShadowPlayPart2 the Shadowplay two parter]]. While the Pillars were integrated into the canon, their confrontation with the Pony of Shadows occurred ''before'' the time of Celestia and Luna.
* CanonWelding:
** The timeline for the [[https://www.fimfiction.net/blog/345509/the-bridge-kaiju-amalgam-universe-timeline Amalgam'verse]] uses a combination of the original Japanese cuts and American edits of ''[=Gojira/Godzilla King of the Monsters=]'' and ''[=Godzilla 1984/Return of Godzilla=]''. The year they take place in as well as most of the plot elements are those from the Japanese originals, however the Steven Martin character from the American edits was present for the events. In the 1984 attack, the cast of the Japanese version sought an aged Martin's advice as he had the only surviving up-close record of the 1954 Odo Island and Tokyo attacks.
** The [=IDW=] comics are considered canonical to the Equestrian events for the most part. This is most evident with Starswirl the Bearded and the sirens' histories. While the Pillars did exist, their confrontation with the Pony of Shadows occurred before the arrival of Celestia and Luna, and at least Starswirl survived the encounter; the other Pillars having either perished or stuck in limbo. This left Starswirl alive and active during the events covered in the [=IDW=] comics and books. The incursion of the Sirens on Canterlot, covered in ''ComicBook/MyLittlePonyFiendshipISMagic'' then occurred just after the Nightmare Moon incident, with Starswirl using one of the portal mirrors he'd previously used to put them in the human realm where they couldn't be a threat to anyone.
** Other [=IDW=] to have happened where the ''Return of Queen Chrysalis'', which happened some time between Seasons 2 and 3, and her historic attack on Trot shortly after the above mentioned Siren incursion on Canterlot. ''The Return of Nightmare Moon'' and creation of ''Nightmare Rarity'' also happened in the gap between the second and third season, the modern-day Pony of Shadows established as a fragment of Nightmare banished from Rarity and Luna.
* CanonImmigrant:
** [[Film/{{Godzilla2014}} Hokmuto]] makes an appearance in the bonus chapter. The movie came out when the story was being written, and readers liked the character so much that Tarbtano gave him an extended cameo and fight scene.
** Though it is a MassiveMultiplayerCrossover in the kaiju home realm, Irys is the only member of the core CastHerd who is not made by Toho. In this case her species, the Gyaos, are kaiju made by Daiei.
** Characters from the [=IDW=] and book series exist more often they don't. Cloud Gremlins, Nightmare Rarity, Scorpan and Tirek's parents, Princess Amore, the seaponies and King Leo, and the comic's version of Starswirl are all mentioned or appear.
** Several fan made MLP characters such as Blade Dancer, Captain Blueberry Frost, Key Ring, and [[spoiler: Harmony]] have prominent roles in the story despite not being made by the author.
* CarFu: The sirens manage to stun the human sized Enjin by ramming into it with a van.
* CarSkiing: The CMC plus Destroyah accidentally do this with their wagon while pursuing the Baby Des.
* CasualDangerDialogue: Aria Blaze and Monster X have several moments of it when fighting and running from [[spoiler:an enraged Frostbite Sparkle, leading her back to the magic concert.]]
* CatchAFallingStar: [[spoiler:After managing to kill Grand King Ghidorah, Junior and Xenilla are spent and falling to the ground from the upper atmosphere, a height even the two of them couldn't survive. The Mane Six, Princesses, and the rest of the Kaiju all come together to save them. Justified in this case as their momentum isn't stopped in a sudden jolt, but rather redirected and given time to dissipate relatively harmlessly.]]
* CentralTheme:
** Forgiveness is hard to do and has to be worked for, but its the only way to break cycles of retribution without killing someone.
** While Love and Hate can both motivate, ultimately love is undoubtedly ''stronger'' than hate, and not as likely to consume you as hatred is.
** Obsessing over the past, be it lost status, deceased romantic partners, or old conflicts leads to ruin. Learning to let go is the only way to heal.
* ChekhovsGun:
** [[spoiler:Chibi launching herself with her copied Atomic Ray's recoil inspires Junior to intentionally utilize it to launch himself back spines first into Grand King Ghidorah.]]
** [[spoiler:The wound the Dark Hunters left on Ghidorah is noticed by Junior. He aims the above attack directly into it to run Ghidorah through the core for a decisive blow.]]
** [[spoiler:Ghost Godzilla was resurrected in the backstory by thousands of angry souls from WWI. Godzilla Senior does the same thing (though temporarily) with the countless souls King Ghidorah had consumed and the aid of Harmony to help his sons defeat Grand King Ghidorah once and for all.]]
** [[spoiler:The baby Destroyah incident comes back into play when Destroyah eats some of Giranbo's magically tainted candy. Her body splits off a baby Destroyah to purge it from her system, which the group then use to guide them to Giranbo's lair.]]
* ChestInsignia: [[spoiler:The Guardian Beasts' SuperMode forms have their symbol on their chests.]]
* ChildrenRaiseYou: Azusa was much more confident and brave after she raised Godzilla Junior.
* ChristmasSpecial:
** In a similar vein to the MLP realm jumping antics of the Halloween Special, Monster X and Irys (Hyper Gyaos) scout out the Equestria Girls realm, [[spoiler: being temporarily turned into humans in the process.]]
** There's a second one set in the Mirror Universe, where an anti-heroic version of Gigan helps a heroic version of Mane-iac prevent her enemies the Malice Mares from poisoning the city.
* CliffHanger: Almost all of the chapters end on this to varying degrees, much to the joking ire of some readers.
--> '''Tarbtano (when asked why)''': "Because I'm evil and the devil made me do it."
* ClimaxBoss: Chapter 41 has ''three'':
** [[spoiler:Grand King Ghidorah, which marks Junior and Xenilla finally becoming a SiblingTeam and fully mending the divide in their family (including with their father when Senior [[BackupFromOtherworld returns from the dead just long enough to help land the killing blow]]) by teaming up to destroy King Ghidorah, one of the biggest threats in the series. It also sees them finally use the Spiral Fire Ray.]]
** [[spoiler:Enjin Sunset, who sees Rarity finally overcome her trauma with Nightmare (a recurring element with her) and force it to power her up via HeroicWillpower to win. It also sees Enjin ''finally'' be destroyed, which will take Bagan some time to be able to make another one.]]
** [[spoiler:Kaizer Ghidorah, which sees Irys become a fully realized Guardian Beast (though one still on the enemy side), but more importantly sees Monster X finally reconcile the two parts of his personality and perform a SplitPersonalityMerge with Kaizer, with Controller 011 passing on to the afterlife and blessing X's relationship with Aria Blaze.]]
* ClingyMacGuffin: A Siren's necklace can only be removed by its wearer. [[spoiler:Not even Monster X is strong enough to remove Aria Blaze's necklace without her permission. At a much later time, Sonata Dusk gets mugged by three strangers, one of them the human Twilight Sparkle, and utterly shock her by casually stealing her necklace, and the action damages her.]]
* CombatBreakdown: Luna and Junior's fight. By the end, Luna only has use of one wing and can't fly while Junior is injured so badly he's not healing normally. Both are also battered and bloody. The final attack isn't even some big fancy move, just Luna bucking Junior ''really'' hard in the face.
* CombatPragmatist: Despite being the best martial artist of the core kaiju, Monster X isn't above 'cheap' moves. When going up against a [[spoiler:windigo mutated]] Midnight Sparkle while in human form, he considers just simply getting charged up enough to grow to full size as a kaiju and stepping on her.
* ComesGreatResponsibility: A root of Junior's motivations behind his heroics. In his eyes, because he has so much power, he's responsible for the safety of those weaker than himself, from threats they can't face but he can.
* ComicallyMissingThePoint: Godzilla Junior still fails to understand romance. Having seen both humans and Equestrians give flowers, the meaning flies completely over his head. Considering ponies are herbivores, he comes to the conclusion they are exchanging thanks by giving each other treats.
* CompositeCharacter: Several due to the combined timeline.
** The Mothra and Battra fairies are a combination of the Showa and Heisei Godzilla series continuity as well as Rebirth of Mothra trilogy. They have the names and colors of the latter, with Moll and Lora as the twins acting as Mothra's assistants and Belvera as their older sister who was an assistant to Battra. Their titles are the Elias, which are their races' name in the Rebirth Trilogy, while their species is called the Shobijin; which is what the fairies were called in the Showa series.
** Junior is of course Godzilla Junior from the Heisei continuity all grown up, but also fills the roles of all the Millennium Godzillas except GMK.
** Anguirus is a combination of his Showa incarnation, his video game version, and his scraped GMK version, with some aspects of the reboot Gamera series added in.
** Rodan and Raiga both have aspects of the Gamera reboot films like Anguirus.
** Yonggary has the original's role as an ancient creature awakened from centuries of slumber, but his design seems to be closer to his reboot's, while also having aspects of the Gamera reboot as with Rodan, Raiga, and Angurius. According to WordOfGod, he also fought Cykor as in the reboot, though as part of the Final War.
** [[spoiler:[[BigBad Bagan]]]] is an amalgam of his various unused concept selves and his video game incarnation. More specifically [[spoiler:The origin as three aspects combined into one from "Return of Godzilla", the history of the "Mothra vs. Bagan" and "Godzilla 3" drafts, and role as a world ender from the "Godzilla vs. Bagan" script.]]
** Ghost Godzilla was the GMK Godzilla combined with the unused ''Godzilla vs Ghost Godzilla'' concept.
** [[spoiler: The Leviathan is, aside from being this in a literal case, visually based off concept art for Final Wars Godzilla, Shin Godzilla, and Super Godzilla.]]
** The faieries for Mothra are taken from the Rebirth of Mothra trilogy, the three Elias, but are slotted into roles of the Cosmos faeries for Heisei Godzilla films as what they were doing before the trilogy. Additionally they are given the name the Showa and Post-Heisei saga faeries often have as the Shobijin.
* ContinuityNod: Even though this is a MassiveMultiplayerCrossover, this is set after a largely unchanged Heisei series timeline with the grown up Godzilla Junior as the current Godzilla. This explains his calmer and gentler personality, so long as he isn't attacked; unlike the neutral or evil incarnations of the character.
* CooldownHug: [[spoiler: Chibi Moon runs up to and clings to Nightmare Godzilla's leg, pleading for him to stop his rampage. Adding onto what had already happened, he does.]]
* CosmicHorrorStory:
** [[spoiler: Bagan comes off more as an EldritchAbomination than it does a kaiju.]]
** The same applies to [[spoiler:Grogar, who's on a similar tier to Bagan and having similar vague and shifting depictions of him. He also has a TomeOfEldritchLore he gave to his students that gives off a similar presence to Bagan's.]]
* {{Crossover}}:
** ''A Shimmer in the Dark'' is a crossover involving ''The Bridge's'' incarnation of Rodan [[spoiler: and Mizu]] winding up in the ''FanFic/TheShimmerverse''.
** ''Hunters and Hollows'' is a crossover where the Hunters go to the Hueco Mundo of ''Fanfic/EquestriaGirlsFriendshipSouls''.
* CurbStompBattle:
** Pit one of the most tanky and seasoned veteran fighters amongst Terra's native kaiju against a half dozen slightly smaller, inexperienced, and less durable dragons; and you can guess what happened when Anguirus [[spoiler: after reverting to his full form thanks to Rainbow Dash]] intervened against the greed grown versions of Garble's gang.
** According to the timeline, Trespasser got a severe one from Junior when it ticked him off. [[spoiler:Mutavore didn't even get the chance to ''get clear through the portal'' before getting fried by Junior.]]
** In their first meeting 370 years ago, Grand King Ghidorah dished one out to Monster X. [[spoiler:Then X turned into Kaizer Ghidorah and returned the favor.]]
** Starlight Glimmer has a wealth of magical potential [[spoiler:and forbidden dark magic use via King Sombra's notes]] but she found herself faced up a ''royally pissed off'' Godzilla Junior when Grand King Ghidorah mentally suggested her to attack him. The fight between a unicorn who's best skill is magic suppression and a massive kaiju-turned-stallion twice her size who ''does not'' use magic goes from bad to worse when [[spoiler:the Nightmare bonds to the enraged monster king. The "fight" between her and [=Nightmare/Shin=] Godzilla can be be described as Starlight frantically dodging while getting increasingly terrified as the kaiju levels a town to get at her.]]
** When the Storm King's army attempts to invade Canterlot, they only succeed in turning Cadance to stone because all of the guard and visiting delegates start fighting them, which is easily reversible; before Luna pulls the kaiju card and a very livid Xenilla downs their airship fleet before he 1-shots Tempest Shadow by roaring in her face full force.
** Sci-Twi had begun to get a good grasp on her telekinesis and ice magic [[spoiler:after instruction by the windigo Zephyrus]], but Aria Blaze managed to use her martial arts knowledge to terrify and brutalize her in the first phase of their fight by staying in close and wailing on her in hand-to-hand combat.
* DarkerAndEdgier / LighterAndSofter: An odd example as the story has its lighter and dark moments in fairly equal number, going for more of a balance between the two franchises. It's certainly darker at times than Friendship is Magic usually is, having scenes or sequences far more mature than the show has; but utilized a LighterAndSofter take on the kaiju series, such as using a heroic incarnation of Godzilla instead of a TrueNeutral or evil incarnation. Compared to most other MLP/Godzilla crossover stories like ''My Little Desotroyah'', ''The Bridge'' includes a lot more humor and light heartedness.
* ADarkerMe: The Nightmare takes your inner view of your self and your mental state to make the Nightmare form. Luna wanted to be as mature and powerful as her sister, so Nightmare Moon ended up looking like a darker version of an older Luna. Rarity worried about being forgotten, so Nightmare Rarity became a beauty ideal no one couldn't pay attention to. [[spoiler:Godzilla Junior had an extremely low image of self-worth and saw himself as just a monster, so Nightmare Godzilla became a grotesque, flaming, hideous looking beast resembling an Equestrian Shin Godzilla]].
* DavidVersusGoliath: Aria Blaze and Monster X are both smaller than Enjin in both human and, in the case of the latter two, kaiju form. Gigan, Irys, and Megalon are all shorter and smaller than Kaizer Ghidorah. Godzilla Junior [[spoiler:and Xenilla as well]] are 50 meters shorter than Grand King Ghidorah.
* DeadlyPrank: A Changeling decides to transform into [[VideoGame/{{Slender}} Slendermane]] and scare approaching ponies, only to be nearly killed by Destroyah.
* {{Deconstruction}}: Happens a few times.
** Rigidly adhering to the belief that heroes ''must'' abide by ThouShaltNotKill in all circumstances can lead to rash judgements and not understanding the circumstances the heroes were put through.
** More minor, but Mariner "Chibi" Moon is for the magical ChildProdigy Twilight Sparkle was. She lacks control over her potentially destructive power and her teachers were too scared to address it as they instead attempted to force her to use less powerful magic. This exact same situation, coupled with getting teaching from the wrong source, is what resulted in this world's version of Starlight Glimmer.
** The notion one's alternate world counterpart would be identical to each other morally. The Equestria Girl's world Twilight Sparkle ''thinks'' this is the case and [[DoppelgangerGetsSameSentiment she's destined to be a great hero like her equine counterpart.]] [[spoiler: Which leaves her blind to being manipulated by Zephyrus into causing a major conflict there and becoming a villain.]]
** The arc set in the Equestria Girls-verse harshly deconstructs the RoaringRampageOfRevenge. While the [[spoiler: Sirens and the Dark Hunters]] are justifiably angry and upset over [[spoiler: Sonata being attacked and maimed by Sci-Twi]], their ultraviolent response creates far more problems than it solves. [[spoiler: Largely since this conflict was orchestated by the Wendigos, beings who feed off of hatred and strife, who very much want to create as much violence a possible]].
*** [[spoiler: In their blind anger, Monster X and Gigan mistakingly target and attack Princess Twilight and her friends, completely innocent bystanders. The end result is they end up with a very angry Terran Defenders and Celestia coming after them, and are essentially stuck with Princess Twilight as a hostage to deter retaliation. Due to past grudges with both Equestria and Terra, they refuse to communicate with the heroes about the situation, which only fuels their distrust and anger further]].
*** [[spoiler: When the Dark Hunters and Sirens do finally catch up with Sci-Twi, they also resort to violence in order to get Sonata's gem back. Unfortunately, this also creates problems: Sci-Twi was manipulated into stealing Sonata's gem by Zephyrus, who convinced her that the people chasing after her are evil monsters. By refusing to even try and talk Sci-Twi down, instead choosing force, they only further convince Sci-Twi and Wallflower, who has also been manipulated, that Zephyrus' fabrications are correct]].
*** Eventually, all these mistakes come to a head when the big battle starts: [[spoiler: the past grudges of the Sirens and the Dark Hunters lead to a bunch of senseless conflicts with the heroes. The Dazzlings end up in an battle of the bands with the Rainbooms, while Gigan picks a stupid and pointless fight with Godzilla. Aria's savage brutalization of Sci-Twi, without even an offer of mercy, only scares and angers the girl into embracing the power of the Wendigos, and Wallflower Blush, seeing Aria beating Sci-Twi nearly to death, angrily uses the Memory Stone on X, which allows Boreas to posess him. Aria takes on her Kaizer X form to fight Boreas, but it does her no good since her powers only fuel Boreas, and she can't fight without killing X's body]].
*** [[spoiler: The end result of these screw-ups is nothing short of disaster: the Sirens and the Dark Hunters not only fail in their task, but have only made the Wendigos stronger by creating so much strife and hate: Boreas walks away with X's body, Notus is able to feed off everyone's self-doubt, and both the Sirens and the Dark Hunters are utterly ashamed and horrified with themselves for causing things to spiral out of control. While Sci-Twi learns the truth about Zephyrus, she is too badly hurt by Aria's attack to warn Wallflower, who due to the aforementioned attack is in fear for Twilight's life, and is thus easily manipulated by Zephyrus into erasing Sci-Twi's memories]].
*** [[spoiler: Only one solution is left to the Dark Hunters and Sirens: admit their mistakes to the heroes, drop their grudges, and make amends. Gigan is forced to acknowledge he was wrong to act the way he did, while Aria acknowledges she only fueled Boreas by beating Sci-Twi within an inch of her life]].
* DefrostingIceQueen:
** The Sirens become substancially nicer over time as the Sirens begin to use a more successful song based off love magic instead of strife after Aria discovered it in during the Enjin arc.
** Adagio Dazzle especially got several treatments of this. While still arrogant and prideful, she wound up significantly warming to the Dark Hunters, Gloriosa, and Twilight Sparkle over the course of the Winter War arc.
** [[spoiler:Destroyah manages this after over 30 chapters of development. After being forced to not go on the attack instantly and experience new emotions and feelings, she gradually warms to Equestria and the Crusaders. Enough that by the Halloween Special she goes full MamaBear to protect them.]]
* DesignatedGirlFight: Downplayed and subverted significantly as multiple battles were present before it with gender as an afterthought, but the first kaiju on kaiju rumble in Equestria is Mothra vs. Gyaos.
* DestroyerDeity: [[spoiler:Bagan is the God of Extinction (though it seems to be self proclaimed). Empress Flurry Heart's report refers to a God of Destruction listed separately from him, which is implied to be Grogar or possibly even Junior himself. Ghidorah gets a glimpse of the being in his dying moments as well. A potential candidate is the Leviathan, a monstrous transformed state Godzilla Junior has.]]
* {{Deuteragonist}}: The Dark Hunters can be seen as this, as they are the most often focused characters outside of the 'Kaiju Six' and Mane Six, and their actions drive a large part of the plot.
* DidYouJustPunchOutCthulhu:
** [[spoiler:Aria and Monster X killing the first Enjin.]]
** [[spoiler:Rarity killing the ''second'' Enjin by exorcising him from Sunset using Nightmare's power, then throwing his unstable core into Grand King Ghidorah and severely wounding him, helping Godzilla Junior, Xenilla, and [[BackupFromOtherworld Godzilla Sr.]] destroy the planet killing space monster once and for all.]]
* DismantledMacGuffin: [[spoiler:The spell needed to open the entrance to Tambelon, Grogar's domain and prison, is split into four pieces and scattered among the [[TomeOfEldritchLore tomes of dark magic]] he gave to each of his students. Furthermore, the magic of either Harmony or something related to hers (like an Alicorn) is actually needed to free Grogar. Chrysalis is currently looking to assemble the spell and free her teacher.]]
* DisneyVillainDeath: The implied fate of the Cloud Gremlins once Rainbow Dash and Rodan destroy their cloud fortress.
* DistractedByTheSexy: Fancy Pants and a few other stallions gawk and stumble over their words when they meet Mothra Lea in the form of an Alicorn Princess.
* DivineIntervention:
** A currently then unnamed spirit or deity, [[spoiler: Harmony]], is the one who converses with and sends King Caesar back into Equestria's past.
** Happens again later on when the same being saves Twilight Sparkle's life and convinces Monster X to spare a guard.
** Considering Mothra's mythical status, she coming to Twilight's aid could arguably count.
* DontYouDarePityMe: Gigan is not ashamed of his cybernetics having progressed to the point he's mostly mechanical as CyberneticsEatYourSoul is not in play and he's still 100% himself. If someone brings it up like he should mourn his mostly lost organics, he's firmly tell them to can it.
* {{Doorstopper}}: As of April of 2021, the story is at over 1,000,000 words and climbing, not even counting the various sidestories, optional bonus chapters, and supplemental information blogs.
* DoubleMeaning: Xenilla repeatedly calls Godzilla Junior "Icka'brod", meaning "Brother" and always refers to him as his little brother. This is both Xenilla using it to get under Junior's skin after the latter denies the familial relation [[spoiler: and foreshadowing the fact Xenilla sees Junior as family and loves him as such.]]
* TheDragon: It's shown so far that Destroyah plays this role to Xenilla, albeit begrudgingly at best. [[spoiler: Subverted in that they start out evil and are certainly not kind, but they are not the villains of the story. And Destroyah's grouchy demeanor doesn't stop her from being the ''only'' Mutation actually loyal to Xenilla.]]
* DragonAscendant: [[spoiler:Sombra, Discord, Tirek, and Chrysalis all became BigBad level threats in their own right after their mentor, Grogar the Shadow King and Nexus of Dark Magic, was sealed away by Harmony.]]
* DramaticIrony: There's quite a bit of this, as not all of the non-kaiju characters know that the newcomers they're interacting with are normally gigantic monsters.
** Xenilla is an enormous reptilian mutant born in the depths of space, leader of an entire faction of Kaiju, and bent on the conquest of Terra. Seeing such a villain [[http://www.deviantart.com/art/GETOFFOFME-455353329 awkwardly comforting Sweetie Belle]] to keep up appearances is absolutely priceless.
** When Sunset Shimmer meets humanized Hyper Gyaos in the Equestria Girls realm, she assumes that Gyaos is from an abusive family due to her BrokenBird demeanor and claiming not to have a name. Given that Hyper Gyaos's "family" consisted of a mindless flock of horrific flying monsters that regularly turned to cannibalism to sate their unending hunger, Sunset is more right than she could ever begin to fathom.
** Both the Sirens and Monster X assume Enjin is after the Siren's magic after it tried to attack Aria in the hospital, forming an EnemyMine team-up to deal with it. Unbeknownst to them, Enjin is ''actually'' after kaiser energy that's within Monster X [[spoiler: and Aria after her exposure to Kaizer Ghidorah.]]
** [[spoiler:Sunset and the Sirens meet long before their Rainbow Rocks encounter, but while both notice something a little off about the other, neither seem to actually realize what the other is.]]
** Neither the Equestria Side [[note]]Mane 6, Princesses, Terran Defenders and turn-coat Mutations[[/note]] nor the Sirens and allied Dark Hunters are aware of the Equestria Girls "Sci-Twi" existing. [[spoiler: Causing Monster X to go on a warpath against ''Princess'' Twilight Sparkle when Sci-Twi scarred Sonata Dusk and stole her necklace, thinking the alicorn princess did it. It results in he and Gigan kidnapping her, spurring the wrath of Mothra Lea.]]
%%* DeusExMachina: They do happen in a subtle way.
* DreamingOfThingsToCome:
** Celestia has a vision of the gyaos attack on Canterlot (and Godzilla's counterattack) shortly before it happens.
** Upon his 'birth', Xenilla got a onslaught of them foreseeing some monster that would destroy Terra. He assumed it was Godzilla.
** Rarity has a nightmare of the BigBad's forces destroying Equestria if he succeeds in his plans. [[spoiler: It would appear to have been sent by the Nightmare Forces.]]
* DudleyDoRightStopsToHelp: Flash Sentry in a nutshell. When he's just trying to get back to the castle from the train station, he keeps having to stop and double back every time he sees something wrong. Filly losing her balloons, said filly losing track of their parents, veterinarian hauling heavy bags of animal feed by herself, helping a very angry cat out of a tree, etc. Apparently this happens to him a lot.
* DugTooDeep: The short "Extinction Hour" reveals [[spoiler:Bagan was freed from Attu Island when an aspiring archaeologist named Andria Young inadvertently broke an artifact maintaining his seal while drilling. Though Tarbtano says that he would have broken out sooner or later and Andria's mistake only accelerated the process.]]
* {{Dumbstruck}}:
** PlayedForLaughs with Rarity upon Anguirus casually admitting to be over 70,000 years old. After a bit she takes it in stride and jokingly asks for his aging secret.
** A more dramatic example was in chapter 33. [[spoiler: Moonbeam Glimmer gets one that lasts for hours after Godzilla Junior confronts her by... putting some flowers on her parent's grave, saying he forgives her for what she put him through, and says she needs to forgive herself to get through her SurvivorsGuilt. Seeing someone she'd pegged as a monster act so benevolently throws her entire mind out of the loop for the rest of the chapter.]]
** Happens to [[spoiler:Grand King Ghidorah when Xenilla manages to use the PowerOfLove to briefly overpower him. He doesn't have time to recover before Godzilla Junior impales the King of Terror from behind.]]
* DynamicEntry: Godzilla Junior returns to his full power in a brilliant display, complete with a massive PillarOfLight.
* EmergingFromTheShadows: King Sombra naturally does this a lot.
* EstablishingCharacterMoment:
** For some of his gruffness and more villainous incarnations, the moment the princesses and Mothra ask him to help save Canterlot and he agrees on his own free will to fight off a 200+ strong flock of Gyaos; we know we definitely have a heroic Godzilla on our hands.
** Princess Celestia's entry into the story is to singlehandedly smash the quarreling kaiju against opposite walls, loudly shout that the fighting ends ''now''; and then showing her mature side by calmly defusing the situation then powering down.
** [[spoiler: Monster X]], though he goes unnamed for a time, leaves the first pony he encounters unharmed, says he doesn't remember his original name, and then even rescues another pony being attacked by legion soldiers. NobleDemon indeed.
* EvenEvilHasStandards:
** The Nightmare force/Pony of Shadows might be the literal spirit of Nightmare Moon and wanted to rule Equestria as a dictator, but even she is terrified of the BigBad in an EvilVersusOblivion way.
** Practically Monster X's calling card, to the point he is so restrained from excessive violence and destruction he doesn't really act like a villain at all. WordOfGod has compared ''The Bridge's'' version of X to a soldier in an enemy army. They may be fighting for the other side, but doesn't dictate them being moral or immoral.
* EveryScarHasAStory: Princess Luna and Godzilla Junior exchange some explanations upon pointing out each others old wounds.
* EvilCannotComprehendGood:
** The BigBad [[spoiler:Bagan]] has a VillainousBreakdown at one point, unable to understand why Godzilla Junior and the other Kaiju would choose to defend Equestria.
** Grand King Ghidorah demands to know why Godzilla Junior is a hero despite having "no destiny" (almost all the other heroic Kaiju were designed or [[TheChosenOne chosen]] for the role, while Godzilla is just a random dinosaur mutated by radiation). Ghidorah is infuriated when Godzilla says he simply [[TheUnchosenOne chose to be a hero]].
** The [[spoiler: Windigoes]] invert this to a horrific degree. [[spoiler: They are able to get Sci-Twi and Wallflower to work for them by pretending to be benevolent spirits, and use truths and outright lies to claim that their tasks are in fact meant to save their world from destruction. In short, they basically manipulate the two girls' decency for their own awful gains]].
** Completely averted with the Dark Hunters. Since they can be more [[PunchClockVillain accurately described as mercenaries]] rather than megalomaniacs, they have a good appreciation of things like teamwork and camaraderie. [[spoiler: One of the reasons they realize that Princess Twilight wasn't the one who stole Sonata's necklace was her willingness to surrender herself to them to protect her friends. Nobody who would sacrifice herself to protect her friends could ever do something so horrible]].
* EvilCounterpart: Xenilla plays this straight to Godzilla Junior [[spoiler: at least in the latter's eyes. Some interaction makes it seem like Xenilla is more of an Anti-villain than the straight up monster Godzilla thinks he is]]. Xenilla himself gets one in the form of King Sombra, another crystal creating villain who uses both brains and brawn to achieve goals; and are usurpers to a "throne". However Xenilla is reigned in by PragmaticVillainy [[spoiler: and is really GoodAllAlong]] whereas King Sombra is a boastful, self described sociopath who delights in mayhem.
* EvilDetectingDog:
** Fluttershy's animals react with fear to Xenilla, but she doesn't notice.
** All animals steer clear of Enjin.
** [[spoiler:King Caeser was able to sense Lord Tirek's evil ''long'' before he saw him.]]
** This is a big thing with Jeog: despite all her power, dogs ''always'' detect her and perceive her as evil. Not only that, but she avoids them, as their barks are extremely loud and painful to her.
* EvilIsBigger: Zigzagged. For instance many of the larger Equestrians and kaiju are larger than average, but there are also many large heroes. While Grand King Ghidorah is a full 50 meters taller than Godzilla Junior; Junior is much larger than the gyaos who only proved to be a threat via ZergRush. Princess Cadance is shorter than King Sombra, but [[AmbiguouslyEvil Xenilla's]] unicorn form is slightly larger than the latter.
* EvilKnockoff: In a sense: while Grand King Ghidorah was the more evil of the two, the Heisei King Ghidorah is explained as having been based off the future people's records of Grand King Ghidorah.
* EvilPowerVacuum: With Xenilla and Destroyah in Equestria, their faction has turned on each other, fighting for control. Note, this more or less starts the second they disappear.
* EvilVsEvil: This happens ''a lot''.
** Red, demonic murderer who indulges in torture vs. the story's BigBad, a cold and calculating destroyer. [[spoiler: Red would have won if the fight continued longer, but was outnumbered and forced through a portal into an unknown dimension.]]
** A lesser example would be the short duel between Monster X and Grand King Ghidorah. It's quite clear those two do NOT like each other even if they are technically on the same side now. [[spoiler: It's shown this isn't the first time they've thrown down.]]
** In the holiday specials, we have Gigan vs. Mane-iac and [[spoiler: human form]] Monster X vs. Aria Blaze and Sonata Dusk.
** King Sombra vs. Xenilla. Though again, the latter's place on the morality scale is debatable.
** A team fight breaks out with Gigan, Megalon, and Irys vs. Grand King Ghidorah.
** [[spoiler: The trope gets taken to the extreme when [[EldritchAbomination Enjin]] is sent to the human realm from Equestria Girls. Lacking developed heroes to face it, [[BigGood Harmony]] has to rely on [[AntiVillain Monster X]] and [[OurSirensAreDifferent the Sirens]] as the best chance to fight it off.]]
** Part 2 of Chapter 29 makes it clear that even though Kaizer Ghidorah opposes Grand King Ghidorah, he is not a good guy because he doesn't care about anyone else and will gladly kill them just for being there.
** [[spoiler:Chrysalis [[TheStarscream secretly intends to use her]] VillainTeamUp with Bagan's forces to restore her EvilMentor [[GodOfEvil Grogar]], fully expecting this trope to come into play between him and Bagan, with her money on Grogar.]]
** From Tales of the Amalgamverse: [[https://www.fimfiction.net/blog/747964/tales-of-the-amalgamverse-monster-x-vs-ultraman-belial-end-of-days Monster X vs Ultraman Belial]].
* ExactlyWhatItSaysOnTheTin: The [[http://www.fimfiction.net/story/121836/the-bridge-a-godzilla-mlp-crossover FiMfiction page]] extends the title and says precisely what kind of crossover it is.
** PlayedForLaughs with the humor based Halloween chapter. "''Gigan gets attacked with shampoo as Megalon cosplays a Pirate''".
* {{Expy}}: Because most of the kaiju only get hints of their personality in the source material, Tarbtano gave them all some traits to fill in the blanks. The result is minor cases of this underneath the source material, though thankfully in a tactful way that doesn't turn into CaptainErsatz.
** One reader noticed Monster X has a similar personality to [[Series/PowerRangersWildForce Zen-Aku]], with a possible ShoutOut scene. WordOfGod confirmed this was intentional.
*** Several readers also noticed that his human form [[spoiler: when in the Equestria Girls realm]] very closely resembles Homura from ''{{Manga/Sekirei}}''. Tarbtano evidently had never even heard of the series, but did note it was a very odd coincidence.
** Mothra seems to be a mix of her canon self from the Rebirth of Mothra series with some [[VideoGame/KidIcarusUprising Lady Palutena]] and [[Videogame/LeagueOfLegends Leona]] thrown in.
** Anguirus appears to be channeling [[WesternAnimation/TransformersPrime WheelJack]] at times.
** Rodan has more than one similarity to Franchise/TheFlash.
** Xenilla's behavior has been compared by readers to [[{{Manga/Hellsing}} Alucard]], with the author playing with this and giving him some lines reminiscent of the infamous [[WebVideo/HellsingUltimateAbridged abridged]] series.
*** [[spoiler: The revelation that Xenilla's failed patricide actions, which indirectly led to the death of Godzilla Senior, were based on a desire to save the world and avoid unnecessary deaths, coupled with his desire to act as an evil enemy to his 'brother' Junior to make him strong enough to kill him also makes Xenilla have similarities with [[{{Franchise/Naruto}} Itachi Uchiha]]. Also, just like Itachi, Xenilla starts to show more empathy and emotion after his ruse was revealed.]]
** WordOfGod states that Megalon is modeled after [[WebAnimation/RedVsBlue Caboose]] and [[Manga/FullmetalAlchemist Alphonse Elric.]]
** RaisedByHumans with a [[MuggleFosterParents human mother]]? Check. UpbringingMakesTheHero? Check. Considered one of the BigGood of his world? Check. Godzilla Junior takes some cues from {{Franchise/Superman}}, though without TheCape personality. Some readers have compared Godzilla Junior to a more jaded, mentally unwell but still moral [[{{Transformers}} Optimus Prime]] and WordOfGod cites [[{{Franchise/Metroid}} Samus Aran]] as an influence.
* FacePalm: Gigan does the closest equivalent he can do with no hands, upon seeing Megalon's antics.
* FailedAttemptAtDrama: [[spoiler: Princess Celestia]] makes it very clear that the beings who [[spoiler: kidnapped Twilight are going to pay dearly for it]]. Problem is, [[spoiler: since she's been reduced to a young human girl]], she comes across as adorable rather than a deadly MamaBear.
* FamousAncestor:
** Prince Blueblood is a descendant of Princess Platinum, accounting for his royal title.
** Flash Sentry and Indigo Zap belong to a long line of esteemed royal guards and police officers, their ancestor Ardent Sentry was a captain who helped liberate Trot during the changeling invasion hundreds of years ago. For her heroism, "Captain" became the highest rank in the newly formed Royal Guard. [[spoiler: Ardent Sentry herself had one. Her unknown father was none other than Commander Hurricane. The Sentry family all know, but keep it secret until one of their members prove themselves.]]
* TheFairFolk: They ''used'' to be widespread on Terra, but now they are extremely rare. They and magical creatures like dragons were the result of normal humans or other animals being altered by high magical mana levels, creating subspecies like rakshasa, oni, and elves. When mana levels plummeted Post-Toba catastrophe, the fair folk lost their magic and largely turned back into normal people and animals, one of Anguirus' rakshasa creators being half changed at the time of his creation. Over the centuries past, only extremely rare aberrations would crop up to keep the legends alive. The only publicly known fair folk left are the three shobijin.
* FatalFlaw: The Sirens, Adagio and Aria in particular, suffer from pride and paranoia. It isolates them from potential allies and hinders their own cohesion and ability to work with one another. While they gradually do overcome these flaws, [[spoiler: making amends with one another and accepting the Dark Hunters as allies]], they don't go away entirely. [[spoiler: They end up escalating Sonata's mugging and disfigurement into a crisis across both the human world and Equestria; first by kidnapping Princess Twilight after mistaking her for her human counterpart, refusing to admit their mistake and let Twilight go out of fear of retaliation, thus bringing the Terran Defenders into an already volatile situation, and later needlessly brutalizing Sci-Twi to the point of driving Wallflower to use the Memory Stone on X, allowing Boreas to posess him]].
* FireAndBrimstoneHell: Zenith was this upon its first appearance. Averted once the BigBad puts it under new management, turning it into a smooth flat plane of obsidian and frigid air.
* FixFic: To a minor degree. The ''Father's Day'' special fixes the apparent plot hole in the ''Hearth's Warming Eve'' special where two alicorns that look like Celestia and Luna appear on a historic flag that predates them. In the special, it's establish via flashback that alicorns are a fictional species up until that point and the then infant sisters resembling the flags is taken as a good omen.
* FlatWhat: Anguirus gives one (albeit with an accent) after seeing Derpy Hooves come barreling into the palace, erratically flying around and nearly crashing into several characters before delivering her letter to Celestia and departing.
-->'''Anguirus''': ....W'at?
* FlingALightIntoTheFuture: Anguirus and Rodan were members of a series of artificial guardian beasts made by now extinct civilizations from the distant past, circa 70,000 BCE. They were specifically made to protect the world when [[spoiler: Bagan]] was set to return 100,000 years later; but got woken up early. [[spoiler: Unfortunately, so did Bagan.]]
* FlippingTheBird: Gigan and Xenilla have both mentioned they would do this if they had fingers.
* TheFogOfAges: Princess Luna's earliest memory is a sweet gentle voice who may or may not be her mother. The next is of her and Celestia as children being found and raised by a foster family.
* ForHalloweenIAmGoingAsMyself:
** Megalon gets mistaken for being in costume, and talked into going trick-or-treating with Pipsqueak.
** The Crusaders question if Lea is going to do this during the 2019 Halloween Special, but subverted in that she doesn't.
** A more sinister example: Giranbo, an evil extradimensional witch, goes as a 'witch classic', with her profile noting that her appearance under the mask is near identical and that she likely inspired the look in the first place.
* {{Foreshadowing}}:
** The Mirror Universe's Xenilla utterly loathes his world's Godzilla Junior and Mirror!Godzilla wants them to team up. [[spoiler: When one takes into account this means the main world's brothers have a perspective flip, it hints that Main!Xenilla actually doesn't hate his brother.]]
** When Cadence meets Xenilla, his heart is described as being 'shades of grey'. [[spoiler:Fitting for someone with genuinely good intentions who does bad things for good reasons rather than black like someone would expect from the apparent archvillain.]]
** The trip to Mako Island all but confirms the sirens are the daughters of two exiled mermare princesses, but the exact nature of who the fathers were was considered so heinous it was scrubbed from history. [[spoiler:They are later revealed to be the arc villains of the Winter War arc, the windigos.]]
** King Sombra mentions being Grogar's pupil. [[spoiler:It later turns out so was Chrysalis and Tirek, and he's not only the GreaterScopeVillain for the Equestrian side, but the 'nexus' of dark magic itself and comparable to Bagan himself. Chrysalis decides to turn the offered VillainTeamUp with Bagan into a plan to resurrect or restore him.]]
** When talking about the Windigos, it's brought up that despite their naming theme, there's apparently no Windigo aligning to the Eastern Wind, or at least hasn't been in a very long time. [[spoiler:In Chapter 51, a flashback shows a fourth windigo ''did'' exist a battle between them against Starswirl and the Pillars seemingly destroyed it or sealed it into limbo]].
** Zephyrus had a scheme in mind behind violently ripping Sonata's Siren Heart gem out, leaving Sonata scarred, traumatized, and mute. She also begins unconsciously absorbing dark magic and strife magic without a filter and generating ice. [[spoiler:Chapter 52 reveals the ploy of the windigos is to turn their daughters into their SuperiorSuccessors, when Sonata transforms into a fourth Windigo, dubbed Australis.]]
* ForgivenButNotForgotten: [[spoiler: After the Dark Hunters and Dazzlings release her, Princess Twilight has no problem calling them her new friends...but makes it clear they were wrong for what they did, and that she's calling the shots from now on]].
* ForWantOfANail: Due to the combined timeline, some things happened very different from canon in both Terra and Equestria.
** Due to Junior's existence, the events of ''Film/RebirthOfMothra3'' derailed about half way through. Instead of needing to go back in time to try and kill Grand King Ghidorah when he was younger and weaker, Lea got help from Junior. As a result, Grand King Ghidorah retreats instead of being killed and Lea never got her [[SuperMode Armored and Eternal forms]] (though according to WordOfGod she'll eventually reach that power on her own). [[spoiler:This later causes ''another'' nail when Ghidorah derails the events of "The Cutie Map" by kidnapping Our Town and sending Starlight on a collision course with the heroes ''earlier'' than in canon.]] Continuing the domino effect, [[spoiler: this in turn causes Starlight to see the folly of her actions by how she hurt Chibi Moon, instead of Twilight convincing her. She then pulls a HeelFaceTurn on her own.]]
** Due to the Jaegers generally being more powerful, the Terra Defenders existing, and Godzilla destroying the Rift himself, the events of ''Film/PacificRim'' went wildly different and many Jaegers and their pilots are still alive who originally died.
** ''Film/Gamera2AdventOfLegion'' never happened, as Legion was recruited by [[spoiler:Bagan]] beforehand, so she's not only still alive but has never even ''met'' Gamera.
** [[spoiler:Azusa Gojo being sent to talk to Junior split the timeline off from Empress Flurry Heart's timeline. While exact details are unknown, one thing is: the Nightmare Godzilla incident ended ''[[https://www.fimfiction.net/story/121836/the-bridge-a-godzilla-mlp-crossover#comment/8509435 far worse]]'' due to the fact that without Azusa's intervention, Nightmare Godzilla wouldn't have been stopped before a tragedy occurred and a highly destructive fight between Grand King Ghidorah and Nightmare Godzilla would most likely happened.]]
** The Storm King's army attacks a lot earlier than in canon, but Xenilla is in Canterlot and defeats them rather easily, so the events of ''WesternAnimation/MyLittlePonyTheMovie2017'' don't happen. However, as a result the Storm King is still at large.
** Citing similarities between them and knowing Starlight Glimmer would need guidance coming from someone with experience using dark magic if Starlight is to control it and atone for what she'd done [[spoiler:Princess Luna takes up Starlight Glimmer as her apprentice instead of Twilight Sparkle doing so.]]
** Due to the Dark Hunters constantly traveling to the Equestria Girls world and Aria Blaze awakening new powers, ambient magic increases and the Equestria Girls start to gain their superpowers two movies early. Instead of the [[WesternAnimation/MyLittlePonyEquestriaGirlsFriendshipGames Friendship Games]] being the catalyst for [[TheMagicComesBack magic's dormancy ending]], it was Aria's mass magic use against Enjin with the sirens, now using stronger magic based off ThePowerOfLove, keep the momentum going. [[spoiler:Also, the human Twilight Sparkle arrives early due to the battle with Enjin piquing her curiosity. This ultimately results in an entire story arc that loosely combines elements from all four of [[WesternAnimation/MyLittlePonyEquestriaGirlsRainbowRocks Rainbow Rocks]], [[WesternAnimation/MyLittlePonyEquestriaGirlsFriendshipGames Friendship Games]], [[WesternAnimation/MyLittlePonyEquestriaGirlsLegendOfEverfree Legend of Everfree]], ''and'' [[WesternAnimation/MyLittlePonyEquestriaGirlsForgottenFriendship Forgotten Friendship]] .]]
** In the ''Jurassic Park'' series material on Terra, the events that took place on Isla Sorna in 1997 drastically differ from the second movie [[note]]Due to the retelling borrowing heavily from the Crichton novel and ''Carnosaur'' series being melded in[[/note]]. As a result, Peter Ludlow remained loyal to John Hammond and worked with Simon Masrani to create Jurassic World.
** Monster X and Aria Blaze's battle against Enjin ended up causing Gloriosa Daisy to discover the cave with the magic geodes and gain her magical powers two movies early. She and Timber Spruce later become allies of the Sirens and Dark Hunters. Since she has people to talk to and help practice her magic, and since the Sirens helped attract more campers so she is not in debt to Filthy Rich, she is far better adjusted and less likely to go crazy.
** The Halloween 2018 special reveals the one between the Heisei and Showa timelines, or at least one of them: the Futurians never teleported Senior to the Bering Sea, resulting in him being mutated alongside his father in 1954 rather than much later.
* FourTemperamentEnsemble: The Dark Hunters.
** Sanguine: Megalon, the most easy-going and jovial team member, keeping morale up with his antics.
** Choleric: Monster X, the de-facto leader and devoted to tasks with the other's safety.
** Melancholic: Gigan, the most reserved and task oriented member, keeping the others level.
** Phlegmatic: Irys, the calmest and most devoted to the team as she sees it as a new family.
* FreeFallFight:
** The final part of the battle between Enjin and [[spoiler: Kaizer form]] Monster X after the latter blasted Enjin off the cliffside and hit him midair with a DivingKick. Enjin stubbornly refuses to die and grapples X while mid-air, but X wins by punching and ripping the trapped Aria Blaze out of Enjin's core, causing its body to fall apart because it was using her as a power source to keep fighting.
** The latter half of Grand King Ghidorah's fight [[spoiler: against Godzilla Junior ''and'' Xenilla, ending in a BeamOWar to end all beam fights.]]
* FriendOrFoe: The fight with Princess Luna and some guards against Godzilla Junior was primarily caused by a misunderstanding. The former party just woke up in a daze after crash landing through the castle roof and when a guard grabbed his hoof, he thought he was being attacked. The guards were just trying to detain an intruder who'd broken into their capital and left a huge crater in the throne room. This spurs a brawl against some of the guards which gets Luna involved.
* FusionDance: Several times.
** The three primordial aspects, Enjin, Mizu, and Doragon fused together to become Bagan; who started as a composite body before morphing into a new form.
** [[spoiler: Mass energy transfer from Zilla, Gojira, and the Showa Godzilla into Godzilla Junior incarnates him into the Leviathan in the Halloween episode, which according to WordOfGod is on par with the Nexuses.]]
** [[spoiler: Frostbite Sparkle is a version of Midnight Sparkle powered by a stolen Siren Heart instead of Elements of Harmony, with the alpha windigo Zephyrus fused with Sci-Twi.]]
* GenderFlip:
** Mothra Lea is a female version of Mothra Leo from the ''Film/RebirthOfMothra'' trilogy. WordOfGod states this is because Mothra is often a female kaiju anyways and keeping it consistent was simpler.
** The Zilla from ''Film/Godzilla1998'' was originally a male that can reproduce asexually. In this continuity, Zilla Sr. was a female that underwent parthenogenesis due to being denied a mate ([[ShownTheirWork just like real lizards]]).
* GeneHunting: Invoked, but averted. Neither Godzilla Junior, nor Princess Celestia and Luna know who their biological parents are as both were found when they were too young to form concrete memories. However, neither feels any need to figure it out as they were perfectly content with their respective adoptive families.
* GenerationXerox: Cadence apparently looks exactly like her ancestor Princess Amore. [[spoiler: However, it's implied that Amore was actually Cadence's mother.]]
* GeneticMemory:
** Xenilla, being a mutated clone of Godzilla Senior, starts getting some memories from his "father" in his dreams. [[spoiler: Because it was the 1990s Mothra who carried the G-cells that became him into space, he also has some of her genetic memories.]]
** Mothra has this too, having some of the memories of all her predecessors (mother, grandmother, etc) as well as her "father" Battra.
* GentleGiant: Godzilla Junior [[note]]Roughly same height as Princess Luna, making him a full head taller and much more heavily built than even large stallions like Big Mac[[/note]] and Princess Celestia [[note]]tallest and largest of the natural Equestrians[[/note]]. Both of them are their world's respective BigGood.
* GlorifiedSpermDonor: [[spoiler: Commander Hurricane was completely unaware Ardent Sentry was his daughter until she was a grown mare, her having been conceived in a one-night stand of celebration with a tavern worker named Speedy Service. Her mother, Speedy Service, choose to keep it secret as she and Hurricane didn't love each other and he was quickly rising through the ranks; not wanting to trap him in a loveless marriage or damage his reputation. She did tell Ardent, leaving it to Ardent to tell Hurricane when she thought the time was right.]]
* GlowingEyesOfDoom: As in canon, happens a lot when certain characters are either charging up or expending large amounts of energy. Most often with the princesses and godzilla siblings.
* GodSaveUsFromTheQueen: Invoked against but thoroughly averted by Princess Celestia, but not everyone thought so at first. When she was forced to banish the Nightmare Moon turned Luna, some in the past saw it as her trying to make a tyrannical power grab and launched the "Nights Rebellion". Celestia managed to peacefully dismantle the uprising without bloodshed by proving she was everything ''but'' this trope. Still the fear of being seen as this is why Celestia turned down the title of Queen even as she grew up and had a solo rule, keeping her Princess title to seem more approachable.
* GodzillaThreshold:
** Funnily enough, unleashing Godzilla Junior on the oncoming Gyaos horde heading for Canterlot is ''not'' this. While Princess Luna was not a fan of the idea at all, Celestia, Twilight, Mothra, and Junior himself all agree to it and multiple parties work to keep the fighting outside the city limits.
** Played straight with [[spoiler: Harmony having to rely on a team up between Monster X and the Sirens to protect the Equestria Girls realm from Enjin, because none of the heroes in that world are strong enough.]]
** When Rarity is attacked by [[spoiler:Enjin who is possessing Sunset Shimmer's body, Rarity has no choice but to become Nightmare Rarity again to fight back.]]
* GoMadFromTheIsolation: Subverted with the unnamed narrator of ''Time and Isolation'' [[spoiler: (Monster X)]]. He stays sane despite being imprisoned for decades, but isolation and relentless nightmares cause [[IdentityAmnesia his memory to degrade into nothing]].
* GoodAllAlong: [[spoiler: Xenilla's entire role as the EvilCounterpart to Godzilla Junior? All a lie so he could constantly push his brother to get stronger and stronger for his own and the world's safety.]]
* GoodAnimalsEvilAnimals: Discussed and inverted when it comes to how Godzilla Junior viewed the animals around him from his youth. To him, typically "bad" animals like snakes or lizards weren't too active but were placid, didn't kill more than they ate, and didn't bother him. By contrast he hated the "good" animal example of dolphins, finding them to possess a cruel intelligence, killed for fun; and frequently harassed him before he got big enough to scare them off. This is why he had no qualms about eating them and whales during his teenage year, despite humans and Equestrians reacting with shock at the idea he could be so nonchalant about it.
* GottaCatchThemAll: The BigBad regularly has his group explore the multiverse and gather as many magical artifacts as possible.
* GoodIsNotDumb: The good characters are genuinely nice, even in the case of the more brutal Terra Defenders, but none of them are by any means ''stupid''.
* GreaterScopeVillain:
** It's revealed that [[spoiler:dark magic has a different 'nexus' from other types and Chrysalis, King Sombra, Tirek, and possibly Discord learned it from that nexus. Chrysalis near instantly turns the offer of a VillainTeamUp with Bagan into a plan to restore said nexus and Legion compares his magic to ''Bagan's''. Said nexus? ''Grogar''.]]
** In a sense [[spoiler:Bagan is basically this for Xenilla's ''entire run'' as a villain, albeit indirectly. Xenilla misinterpreted the memories he got from Mothra of Bagan's rampage as being a vision of a future rampage by Senior, which directly lead into his gambit to the strained relationship with Junior that made him start his plans.]]
* GrievousHarmWithABody: What weapon does Godzilla grab to bat away scores of Super Gyaos rushing him? One of the Super Gyaos rushing him.
* GrimUpNorth: The BigBad was sealed away under an uninhabited island in the North Sea called Attu.
* GroinAttack: Monster X takes one with a metal pipe from Sonata Dusk, [[spoiler: because in a human body he wasn't aware that was a weak spot and got caught off guard.]]
* GuysSmashGirlsShoot: Zig-zagged with the kaiju. Mothra might prefer to keep back and fire barrages of energy blasts because her form is less adept at close quarters brawling. On the other hand [[DarkActionGirl Destroyah]] has absolutely no qualms about ripping her foes apart at range or up close. Surprisingly averted with the MLP roster.
* HalfSiblingAngst: Averted with the Sirens, none of whom are full biological siblings. Adagio Dazzle and Sonata Dusk have the same mother, Melpomene but different fathers [[spoiler:the windigos Zephyrus and Notus respectively]], and Aria Blaze is technically their cousin from Melpomene's little sister Hymnia [[spoiler:and the windigo Boreas]]; but they all treat each other like siblings. Hymnia did raise them all together and Adagio can only barely remember Melpomene, but they aren't ignorant of their relation.
* HalloweenEpisode: Generally has one every year. While some are silly and fun, others are completely terrifying.
** A bonus chapter focusing on the misadventures of Gigan and Megalon has the latter getting roped into trick-or-treating with Pipsqueak (who thinks he's just in costume) and enjoying himself.
** ''Godzilla vs Gabara'' sees a flashback to when Junior had to stop the ancient dream invading Oni King Gabara the Ancient from making his return.
** ''The Bridge: Hocus Smo'cus'' involves the Sirens attempting to understand what Halloween is about.
** 2018 saw a special where Junior, the Showa Godzilla, Zilla Jr., and the Legendary Godzilla all face off with Godzilla Earth.
** 2019 sees Destroyah, Lea, and Twilight have to stop the extradimensional ChildEater Giranbo from abducting Ponyville's children.
* HandshakeSubstitute: As Gigan and Megalon don't normally have hands, they and Monster X bump forearms instead.
* HardTruthAesop: Firmly believing in BlackAndWhiteMorality can lead to rash judgements. Namely if a hero is forced to break ThouShaltNotKill in a crisis situation, accusing them of now JumpingOffTheSlipperySlope is just going to cause more problems. Sometimes lethal force when innocent lives are on the line to remove a threat permanently is needed.
* HatePlague: In the Holiday Special, the Sirens have been inducing these everywhere they go, causing people to argue and fight.
* HatesTheirParent: The sirens absolutely loathe their biological fathers, [[spoiler:the windigos Zephyrus, Notus, and Boreas]], and never refer to them as "father". Considering what they did to the trio's mothers, it is entirely justified.
* HearingVoices: The being that brought King Caesar to the past chimes in with both Monster X and Twilight. The former to keep him from killing a guard, and the latter to save her from a Gyaos.
* HeadbuttOfLove: For Xilians, this is the equivalent to a kiss. After about half a dozen chapters of CharacterDevelopment [[spoiler: Monster X gives one to Aria Blaze, which she afterwards escalates into a BigDamnKiss.]]
* HeelFaceTurn:
** [[spoiler: Xenilla whom, after his GoodAllAlong reveal, makes good on his promise to atone by protecting the Crystal Empire and helping save Rarity and company from Nightmare Godzilla.]]
** Moonbeam Glimmer after the below mentioned HeelRealization.
** [[spoiler: Starlight Glimmer after seeing what her dark path had driven her too, selflessly helps in the Nightmare Godzilla incident.]]
* HeelRealization:
** Moonbeam Glimmer realizes how wrong she'd been about Godzilla Junior [[spoiler: when he comforts her at her parent's graves and left some flowers, as per Fancy Pant's advice, on the headstones; showing he was completely different than she'd believed.]]
** Starlight Glimmer, Moonbeam's little sister, has her own. [[spoiler: She realizes what her reckless use of dark magic has caused ruin to both her's and others' lives after she let it consume her, especially after seeing how it made her hurt a young filly so much like a younger version of herself.]]
* HeroicSacrifice:
** The Fae involved in creating the Guardian Beasts were performing one, as the mana sacrificed to create them was needed for their continued survival. All this to safeguard the future when [[spoiler:Bagan]] eventually escaped his prison. Thankfully at least some of them gradually turned into humans as mana levels plummeted.
** [[spoiler:Junior]] attempts one when [[spoiler:Grand King Ghidorah arrives in Our Town, he sends Chibi and the others to safety while staying to fight the King of Terror despite knowing it's a fight he can't win.]] Thankfully subverted, as [[spoiler:Xenilla comes to help him and they kill Ghidorah with the help of Godzilla Senior's spirit.]]
** [[spoiler:Destroyah]] decides to [[spoiler:hold off Giranbo so the Cutie Mark Crusaders can get to safety, knowing without being powered up to her true form, she's going to die. Subverted, as the Crusaders and the spirits of Giranbo's victims manage to power her up to her true form.]]
* HiddenVillain: Combined with DramaticIrony. The ponies and heroic Kaiju believe that the malevolent kaiju at large in Equestria were simply brought there accidentally by the Dimension Tide. Unlike the reader, they have no idea that the apparent rogues are all part of a single malicious faction, and that there's a BigBad organizing them.
* HighAltitudeBattle: [[spoiler:The ClimaxBoss fight with Grand King Ghidorah ends up as one of these high up at the edge of the atmosphere. Xenilla and Ghidorah can fly, Junior has to spend most of the fight hanging onto them, but figures out a way to [[MythologyGag fly using his Atomic Breath]]. After destroying Grand King Ghidorah, the two are spent and nearly fall to their deaths but are saved by the rest of the Princesses, Mane Six, and the rest of the Kaiju Six.]]
* HoldingOutForAHero: Celestia starts to worry that she coddled her little ponies too much during her reign, making them depend too much on her or heroes to protect them and solve their problems.
* HopeSpot:
** Mothra beats the Hyper Gyaos and the lesser ones it brought with it, only for an even larger flock of them to show up and attack Canterlot.
** In chapter 29, [[spoiler: X and Aria defeat and seemingly destroy Enjin, unfortunately Bagan simply revives Enjin while X and Aria were distracted, allowing Enjin to successfully capture and absorb Aria]].
** Equestria Girls Rainbow Dash, while being chased down by [[spoiler:Monster X]] briefly taps into her element's powers and gains a burst of SuperSpeed. But just as she jumps to freedom [[spoiler:Kaizer X grabs her with a wave of anti-gravity, canceling out her speed by stopping her momentum.]]
** [[spoiler: Just when Aria is about to get Sonata's necklace back from an unconscious Sci-Twi, Wallflower arrives. Seeing her friend bloody and unconscious at Aria's hands, Wallflower blasts Aria with the Memory Stone. X takes the blast, but this allows Boreas to steal X's body]].
* HorrifyingHero: Canterlot's opinion of Godzilla during the Gyaos attack is mixed. Some cheered for him when he won, others were too focused on his brutal fighting methods and frightening appearance.
** This has led to half of the general populace to view Godzilla and the other kaiju as a threat.
* HospitalityForHeroes: Berry Punch gives Captain Frost and Godzilla Junior a free lunch after recognizing them at the pub she works at.
* HotInHumanForm: When Equestrians and Kaiju enter the Equestria Girls world, the [[HumanityEnsues human forms]] some obtain are quite attractive. Adagio and Lea both [[StatuesqueStunner become tall and shapely]] while Godzilla and Gigan gain [[HeroicBuild tough and muscular physiques]], if heavily scarred in some regard and Gigan still being a cyborg. Averted with Monster X, whom Aria notes looks remarkably average behind his mask, and Megalon, Anguirus, Sonata, and several others looking fairly unnoteworthy. [[spoiler: Subverted with Princess Celestia, who should have become an attractive older woman, but instead became a short teenager due to outside interference]].
* HourOfPower: While large amounts of magic can turn the kaiju back to their true forms, the same force of nature that turned them into ponies to begin with will drain off the additional energy and revert them. Lea and Twilight theorize that the charge can last somewhere between 20 minutes to three hours. Theoretically, this could be exceeded, but it could be dangerous to do so.
* HugeGuyTinyGirl: Godzilla Junior is alicorn sized in his unicorn form. Mariner Chibi Moon is an average sized eleven year old filly. As such she looks positively minuscule next to her sensei.
* HumanityEnsues: Just like ponies, kaiju turn into humans when they enter the Equestria Girls realm.
* HumanAliens: Subverted with Xilians and their subspecies, Mysterians. They do closely resemble humans in shape and size, but they are grayscale in color and have larger eyes and flatter noses. However they are still similar enough that, with some help from medical technology, they can have viable and fertile offspring with humans.
* HumansAreUgly: Monster X remarks that this about the inhabitants of the Equestria Girls realm. Ironically, thanks to his amnesia, he's forgotten that he used to be a [[HumanAliens Xilian]].
* HumansThroughAlienEyes: Upon visiting the Equestria Girls realm and seeing humans up close for the first time, Monster X can't help but comment on how bizarre they look.
* TheHunterBecomesTheHunted: The Hyper Gyaos, after being wounded and weakened by Mothra, gets chased by the rest of her flock when they smell her blood. [[spoiler: She's forced to kill them all in self-defense.]]
* HurtingHero: Several Equestrian and Kaiju heroes have their baggage. Godzilla Junior is hauling around SurvivorGuilt that his continued life being a constant reminder his father died, knowledge that his powers make it unsafe to be around his mother; and internally yearns to stop fighting and just live in peace. But, because of a strong sense of responsibility to keep fighting for those who can't, he knows any peace he gets is just a brief respite.
* HybridMonster:
** While "monster" is a bit of a subjective term, the Sirens were born between a union between two mermare princesses and two unknown fathers; creating a distinct trio of beings instead of the typical mermare reproduction. [[note]]Usually it goes that the daughters are normal mermares and the sons are the father's species[[/note]]
** Subverted as they are both in human form, but still played straight in terms of powers. [[spoiler: Aria Blaze continually using Kaizer Ghidorah as a power source gradually gives her more and more of his traits such as dark coloration and enhanced strength. This effectively makes her a siren/ghidorah hybrid.]]
* HybridPower:
** Mothra Lea is basically a Mothra/Battra fusion due to the circumstances of her creation. This not only results in her being ''much'' stronger than either of them with all of their combined powers, but the mixing of powers giving her unique ones neither of them have. [[spoiler:This is also true of her MirrorUniverse self Battra Lea.]]
** [[spoiler:Monster X/Kaiser Ghidorah is an Xilian/Ghidorah hybrid. The result is ''very'' powerful, but it's implied he's potentially strong enough for [[BigBad Bagan]] to take him seriously.]]
* IdiosyncraticEpisodeNaming: The chapter titles for ''Sound of Thunder" form a poem when combined.
* IKissYourHand:
** Xenilla kisses Fluttershy's hoof while expressing gratitude for sheltering him while he was unconscious.
** Rarity also tries to teach Anguirus to do this when instructing him on manners. Hilariously enough, he refuses, pointing out that she walks on those hooves.
*** Eventually Anguirus does do this to Ki Seong, albeit not directly on the hoof. Cue Seong squealing soon as he was out of earshot.
* IKnowYoureInThereSomewhereFight: [[spoiler:Gigan does this when Monster X transforms into Kaizer Ghidorah by recounting his various memories with the team. It works momentarily, but Grand King Ghidorah attacking undoes all his efforts.]]
* IdenticalTwinMistake: Well, more like "Alternate Self Mistake". It's only after she gets kidnapped and can explain herself that ''Princess'' Twilight Sparkle makes Monster X and Gigan realize they got the wrong "Twilight Sparkle" when the one they wanted must be the Equestria Girls' world's native Twilight Sparkle a.k.a "Sci-Twi".
* ImportedAlienPhlebotinum: One of the big [[ForWantOfANail nails in the Amalgamverse]]: [[Film/TheMysterians the Mysterians integrated into Earth's population]] and contributed their technology, granting a boost in nuclear technology and metallurgy that made things like Super X possible. After the Final Wars, humanity got to work on reverse engineering the various alien technologies left behind, granting them another huge boost which includes the ability to create Space Titanium (the stuff the Showa Mechagodzilla was made of) on their own.
* ImprovisedWeapon: After nearly getting run over by Aria and Sonata's car, [[spoiler: a human transformed]] Monster X picks up and uses a broken metal fence pipe as a bo staff to damage the car after jumping on.
* InconvenientSummons: When Twilight, Mothra and Luna cast a mass teleport spell in order to summon the remaining Mane Six and Kaiju, Rarity has the ill-fortune of being summoned whilst in the middle of a bath, bathtub and all.
* INeedAFreakingDrink: Pretty much everyone in attendance's reaction after the incident at Ponyville with the Destroyah swarm.
* InevitableMutualBetrayal:
** According to both WordOfGod and Ghidorah himself, had Grand King Ghidorah and [=DesGhidorah=] not been separated by the latter's sealing, one of the brothers would've inevitably killed the other, and at least Ghidorah is fully aware of it.
** [[spoiler:Bagan and Ghidorah are fully aware the other wants them dead, it's just at the moment Bagan is too strong for Ghidorah to kill and Ghidorah is too useful for Bagan to kill.]]
* InnocentInnuendo: Godzilla Junior doesn't realize half the things he said at a restaurant at Mako Island sounded like he had very lewd things on the mind. Not like the mermares around him minded really, even if they got the wrong idea.
* InsectoidAliens: M Nebulans are roughly man sized aliens that resemble bipedal cockroaches with two sets of arms, though with some traits like defined necks and fingers.
* InsistentTerminology:
** Xenilla insists on calling Cadence "Empress" no matter how many times she corrects him, since he can't wrap his head around the idea of a Princess ruling an empire. Poor Shining Armor, as a non-royal who married into the monarchy, can't get him to stop calling him "Consort".
-->'''Xenilla''': I'm eager to see this.. crystal empire of yours, Empress.\\
'''Cadance''': Princess!\\
(later)\\
'''Xenilla''': Considering the architecture of your land Consort-\\
'''Shining Armor''': Prince.\\
'''Xenilla''': -Prince Consort.
** King Ghidorah gets angry if anyone leaves out the "King" when addressing him.
* InsultOfEndearment: Aria Blaze and Monster X frequently show respect [[spoiler: and later romantic affection]] by insulting the other. The insulted sees right through it every time.
-->'''X''': Stubborn sea-witch.\\
'''Aria''': Worst alien.
* InsuranceFraud: The Flim-Flam brothers attempt to collect by claiming their Super Speedy Cider Squeezy 7000 was destroyed during Godzilla's fight with the Gyaos swarm, when it really broke down ''before'' the fight. Before they can make it to Canterlot, baby Destroyahs overwhelm their wagon and destroy it.
* InterspeciesRomance:
** Braeburn (Earth Pony) has a crush on Little Strongheart (Buffalo), though he hasn't told her yet.
** Blade Dancer (Pegasus) demonstrated interest in Godzilla Jr. (who is in a unicorn body), though he was oblivious and didn't know what to make of her flirting. Eventually, Princess Luna (alicorn) starts to show interest as well and Junior actually seems to return it.
** Anguirus (Kaiju-turned-Earth Pony) has a crush on Ki Seong (Kirin). A later chapter reveals she likes him too.
** Later on, Blade Dancer's attraction migrates to Xenilla (also a unicorn like his brother), and he on some level returns the feelings.
** Subverted with [[spoiler: Monster X and Aria Blaze after a long time. While both are ''very'' different species, a Xilian-Ghidorah hybrid and a Siren, they were both in human form.]]
* {{Irony}}:
** For a while, Princess Luna and Godzilla Junior are very wary around each other after the two's battle, even after the misunderstanding was cleared. She doesn't trust him at all and he think she means to do him harm. Guess who were the ''first'' two characters the fans shipped together with lots of fan art, enough to make a Website/DeviantArt group... [[spoiler: Later comes full circle and seems to be nudging to a mutual crush.]]
** Gigan being flabbergasted that his attempt to make Mane-iac fall to her death didn't work on account of ToonPhysics, considering {{Kaiju}} are probably the biggest violators of SquareCubeLaw in fiction.
** After seeing Godzilla in his true form, Blade Dancer is understandably thrown for a loop, and asks for reassignment so that she can clear her head away from him. She ends up in the Crystal Empire... and assigned to guard Xenilla, who looks almost exactly like Godzilla.
** The BigBad [[spoiler: [[EldritchAbomination Bagan]] ]] was sealed away beneath Attu Island, a real life island in the Bering Sea. Attu is uninhabited, but well renown for its bird watching and peaceful setting.
* ItsAllMyFault: [[spoiler: Mirror World's]] Xenilla blames himself for all the kaiju and people [[spoiler: Mirror World Godzilla Junior]] has killed over the years because he spared him as a child.
-->'''[[spoiler: Mirror]] Xenilla''': “All the souls I’ve murdered, for letting the child that grew into you live.”
* {{Kaiju}}: No really, read the premise and take a wild guess what's in the story...
* [[ManBitesMan Kaiju Bites Pretty Much Everything]]:
** Being a CombatPragmatist, Junior has no aversion to using his teeth when the cards are down; as both Luna and the gyaos found out.
** Runs in the family, Xenilla chomps down on a leg King Sombra was boxing him with, biting down hard enough to break the limb.
** {{Irony}}: [[spoiler: Princess Twilight starts out as the powerless and distrusted hostage of the Dark-Hunters and the Sirens. By the time she's released, she's effectively the leader of both groups]].
* TheJuggernaut: [=Nightmare/Shin=] Godzilla. Even in a pony form, he's extremely destructive with liberal beam use and is much more physical active than his film counterpart. Nothing Starlight Glimmer could do short of dropping a small manshion on him so much as phased him, and even then his reaction was to pause, grab it, and throw it at her.
* JustFollowingOrders: Monster X's reason for being a PunchClockVillain, his [[LaserGuidedAmnesia memory is so destroyed]] the only thing he can remember of his former life [[spoiler: as an Xilian guardsmen and soldier]] was following a master's orders.
* KarmicMisfire:
** [[spoiler: The Dark Hunters, accidentally mistaking Princess Twilight for her human counterpart (who was guilty of stealing Sonata's gem), savagely attack her and her human friends. Flash's car ends up being severely damaged, her friends are either severely hurt or in pain, and Twilight ends up being their captive]].
** [[spoiler: Sci-Twi [[NoHoldsBarredBeatdown getting badly beaten by Aria]] is this, [[DownplayedTrope sort of]]. She ''is'' technically guilty of harming Sonata, but she only did so after being horribly manipulated by a trio of psychotic Windigos. Nevertheless, ''she'' is the one who bears the brunt of Aria's rage]].
* KickTheSonOfABitch:
** Anguirus' CurbStompBattle against Garble's gang after Rainbow Dash helps soften them up and he reverts to his true form with her help. This is after Garble and company terrorized a summer campground and tried to eat several fillies and colts.
** The story goes out of its way to portray Grand King Ghidorah as a monstrosity. Seeing a SmugSnake like him getting '''absolutely trashed''' by a royally pissed off Kaizer Ghidorah was cathartic.
** After thoroughly establishing itself as absolute monster, Godzilla Earth's karma for killing billions of people and kaiju for no reason other than it could catches up to it ''hard''. [[spoiler:The Leviathan absolutely destroys it in their battle when it reaches full power and then spends the next few hours slowly dismembering it and eating it alive. According to WordOfGod, Leviathan demolished Anime Ghidorah as well.]]
** After a two-parter 2019 Halloween special goes out of its way to show Giranbo as a sadistic, child murdering, completely irredeemable villain, it's downright carthetic to see [[spoiler:Destroyah finally get the upperhand on her in the fight and end it by simultaniously drowning and ''dissolving'' her at the same time until there is nothing left.]]
* KilledOffForReal:
** [[spoiler:King Ghidorah, via the combined might of Godzilla Junior, Xenilla, and the spirit of Godzilla Senior with the help of Rarity, Harmony, and the souls released from Ghidorah by Junior.]]
** Giranbo at the end of the 2019 Halloween special down to her dimension collapsing in on itself after she's killed by [[spoiler:Destroyah.]]
* KingIncognito: Subverted with Godzilla Junior and the get-up he puts on when leaving Canterlot Castle. It does fully cover him and hide his features like his distinctly crooked horn, coloration, red sclera, and nasal ridge. However by now everyone in Equestria not only knows what he looks like but also about how he's tall as Princess Luna and built like a tank, so when they see a covered upon pony about twice their size walking by it seems a majority knows who it is. However they're smart enough to know that if "King" Godzilla was going to such lengths to cover himself, then it meant he didn't want to be bothered.
* {{Kirin}}: Ki Seong is a kirin from Carrea -- FantasyCounterpartCulture Korea -- who emigrated to Equestria some time back. She resembles an antlered ungulate dragon or, alternatively, a deer with dragon scales and a draconic tail.
* KissingDiscretionShot: [[spoiler: It is heavily implied Aria Blaze pulled X into a kiss, but the scene change and the unclear wording mask it a bit. Confirmed in ''The Bridge: Building Bridges''.]]
* LadyLand: Due to mermares being an all-female species, their capital at Mako Island is this by default aside from the odd visiting male seapony.
* LandingInSomeonesBathtub: Inverted. The mass teleportation spell to bring both the converted kaiju and Elements of Harmony to the throne room teleports in Rarity while she's still bathing, bathtub and all.
-->'''Rodan''': Oh look a white one.\\
'''Rarity''': ''*covering herself with shower curtain*'' WHAT IN THE NAME OF CELESTIA?!
* LaserGuidedAmnesia: Monster X can't seem to remember a single thing about him prior to getting to the state he is in now, outside of some nightmarish still images.
-->'''Marigold''': ''*as she's giving a tarp covered X a cloak for the rain*'' What's your name?\\
'''Monster X''': I cannot remember...
* LaserGuidedKarma: [[spoiler: Grand King Ghidorah apparently killing the xilian leader, Controller 011, is what caused her transformed husband, Monster X, to unlock his full power and turn into [[SuperPoweredEvilSide Kaizer Ghidorah]].]]
* TheLastDance: [[spoiler: Grand King Ghidorah's big attack at Our Town's plateau is revealed to be this. He considers himself fated to die soon and wants to fight Godzilla Junior one last time to give him peace.]]
* LastOfHisKind: [[spoiler: The Albino Hyper Gyaos, due to a combination of battles with Mothra (at the battle of the old castle), Godzilla (at Canterlot), and herself (in self-defense when they smell her blood and attack), had the rest of the gyaos killed off; and thus is the only remaining member of her species.]]
* LaymansTerms: Twilight Sparkle gives a MagiBabble-heavy presentation on why the Kaiju turned into native species when they entered Equestria and how they can change back. Destroyah manages to summarize it in one sentence.
-->'''Destroyah''': "So in a nutshell, we got thrown into ponyland, magic barrier made us ponylanders, we can go back to our real bodies but only temporarily and we need a pony to change us."
* LegacyCharacter: Two of the most notable ''Good Kaiju'' are this. Mothra Lea has a lineage including her mother, the Heisei Mothra, and dozens of other Mothra in the past. Godzilla Junior has both his adoptive father, Senior (the Heisei incarnation), and the 1954 beast all being his predecessors by the same name.
** Additionally in the human Equestrian world, Gaea Everfree is a title for the retainer of the Geodes when a times comes that they need protection. Decades ago it was a woman named Wysteria, and currently the title has passed to her daughter Gloriosa Daisy.
** The [[Franchise/SailorMoon mantle of the Senshi Guardians]] is passed down from the current incarnation to worthy successors as the former start to age out of their prime. The process is gradual so the current guardian can locate and train their successor adequately. Chibi Moon is destined to be her mother's successor as the Lunar Guardian when she's older.
* LegionOfDoom:
** The Intersteller Sentient Confederation, the team up of various hostile alien races, including Vortakk, Xilian, Nebulans, Leviathans, Millennium, Simians, Kilaak, and many more, who banded together to try and take Earth during Final Wars. In the story proper, Gigan, Megalon, and Monster X are the only present representatives.
** The BigBad has assembled a multiple-franchise-spanning army of evil kaiju. And if his resurrection of Sombra is anything to go by, MLP villains will be joining the roster as well.
* LetsYouAndHimFight:
** Early in the story, Princess Luna and the Royal Guard get into a fight against Godzilla Junior. It was all a big misunderstanding due to events outside their control. [[note]]Junior had crash landed inside Canterlot Castle and was knocked half senseless. When the guards, thinking he was an intruder, attempted to apprehend him to figure out how he got in there, Junior thought he was being attacked and fought back. Princess Luna walked in on the guards getting knocked around, assumed Godzilla was a villain, and attacked with Junior defending himself.[[/note]]
** This almost happens when Twilight meets Lea, due to mistaking her for Queen Chrysalis, but Lea defuses the situation quickly.
** Basically Harmony's plan to deal with Enjin. Lacking strong enough heroes to take on Enjin, she has to manipulate [[AntiVillain Monster X]] and the Sirens into fighting him. Helps that Enjin was targeting them to begin with.
** Megalon and Sonata Dusk figure out this is happening and defuse the situation when their groups run into each other.
** Monster X gets into a fight with Mothra Lea and the Human 5. [[spoiler: X, mistakenly thinking Twilight Sparkle is the one who stole Sonata Dusk's necklace when it was really Sci-Twi, tries to kidnap Twilight Sparkle and demand it back. Lea and company, also unaware of Sci-Twi's existence or involvement, just see X as a random attacker trying to hurt their friends.]]
* LightningFireJuxtaposition: The fight between Raiga and Agon in the opening to ''"Sound of Thunder"'', due to the former's presence summoning a thunder storm and the latter spewing napalm everywhere. [[spoiler: "Lightning" wins.]]
* [[LikeFatherLikeSon Like Mother, Like Son]]: In a special, we get some pretty heavy implications that Godzilla Junior's selfless, responsibility driven attitude actually comes from his adoptive human mother, Azusa Gojo. She not only constantly stuck up for her adoptive son during his days with her, but she had the selflessness and determination to use herself as a distraction to draw Trespasser away from the civilians; displaying NervesOfSteel even when cornered.
** Subverted in regards to Junior and his adoptive father and predecessor, Godzilla Senior. As brought up by [[spoiler: Azusa herself]], Junior inherited his father's unbreakable will and determination, but is still his own being and not destined to be a repeat of Senior because of his own uniqueness.
* LimaSyndrome: [[spoiler: The Dark Hunters and the Sirens gradually become very warm and friendly toward Princess Twilight, who is their captive. It's justified since the only reason they kidnapped her was because they mistakingly assumed she was the one who violated Sonata and stole her necklace. The only reason they kept her captive once they learned the truth is because they want to deter retaliation from Twilight's kaiju allies. Twilight herself wins them over with her honest sympathy toward Sonata's plight, and her desire to help them find her human self]].
* LockedOutOfTheLoop: Despite becoming friends with Gloriosa [[spoiler: the Sirens don't tell her that Twilight was kidnapped. Twilight herself doesn't either, choosing not to make waves]].
* LoveMakesYouCrazy / LoveMakesYouEvil: [[spoiler: Kaizer Ghidorah's insanity, out of control powers, and unending desire to kill Grand King Ghidorah was spurred by the latter forcing him to watch his wife die right in front of him. [[note]]Kaizer/X used to be a normal Xilian.[[/note]] ]]
* MacGyvering: The 1950s Mysterian attack mech, Mogera, turned out to be this. Instead of a dedicated war machine, it was actually a jerry-rigged defense robot and was originally a mining machine. It's comparable to slapping some armor and guns to a bulldozer to try and make it a tank.
* MadeOfIron: While they can be physically harmed, the ponified kaiju and immortal alicorns are ridiculously durable for a pony.
* MagicalProfanityFilter: Destroyah discovers ([[ItMakesSenseInContext upon accidentally dividing herself into a bunch of babies]]) that young Equestrians have a natural filter which prevents them from swearing. Which prompts her to furiously shout "FUUUDGE THIS BODY!!"
* MagicFeather: When Blade Dancer is evacuating citizens during the Gyaos attack on Canterlot, she encounters a young colt who is too scared to move. She has to let him wear her helmet to make him brave enough.
* TheMagicGoesAway: What happened to Terra (Kaiju home world) for the most part. 77,000 years ago they had TheFairFolk, Atlantis, and {{Magitek}}. Thanks to the BigBad, the number of modern Terran magic users can now be counted with a single hand.
** Judging from the dialogue, this is what said BigBad has planned for Equestria.
* MagicAIsMagicA:
** Equestrian magic is primarily driven by emotions and experiences such as love, friendship, hope, and will for good magic; and by hatred, greed, and wrath for dark magic. Terran magic by contrast runs off mana, a life energy all beings and planets have. The two cannot be used to counter each other. The one exception is [[spoiler:Bagan and Harmony, who's magic so so pure and vast they ''can'' counter each other.]] However, according to WordOfGod, it's entirely possible for an Equestrian to learn Terran Magic, and in fact they'd be rather adapt at it due to their natural mana reserves. It's eventually revealed that Light and Dark Magic, while both emotionally driven, are distinct from one another [[spoiler:to the point Bagan realizes Harmony can't be the nexus for Dark magic and sends Legion to Chrysalis to learn of it, discovering the nexus to be Grogar.]]
** In regards to Equestrian magic, some seals or magical implements created and operated by the magic of a certain somepony requires them or someone with magic akin to their own, such as family or a student, to affect them. Celestia's anti-changeling wards for instance can only be discretely turned off by her [[spoiler: or one of her students like Sunset Shimmer.]]
* MagicVersusScience:
** One could consider the fight between Luna and Godzilla Junior to be this from a point of view. One uses [[spoiler: and was created by]] magic and hails from a fantasy series. The latter is a mutation brought upon by radiation and is firing back with plasma beams.
** The magic all around areas like Equestria confuse Gigan's sensors, as they cannot quantify it. He compares it to trying to divide by zero.
** The Cloud Gremlins use dark magic to make their storm clouds too tough for a Pegasus to break. Rodan and Rainbow Dash apply the scientific principle of Thermal Expansion to weaken the clouds enough to break by lessening its density.
** Subverted in that the non-magically inclined characters usually have nothing against magic in itself, they just don't understand it.
* MakeMeWannaShout:
** Celestia putting her hoof down borders on this trope. And you thought Luna's Royal Canterlot voice was loud! When Celestia raises her voice, half the glass in the palace broke.
** Anguirus is in the same league when in his full form. His roar at point blank range is enough to rupture a dragon's eardrums and stun it.
* ManlyTears: [[spoiler: Seeing and seemingly futilely struggling to revive Aria Blaze's apparently dead body causes the typically stoic, controlled Monster X to start crying before he finally managed to restart her heart.]]
* MassiveMultiplayerCrossover: In addition to Toho's creations, numerous kaiju owned by other companies make appearances, ranging from Legendary Picture's Pacific Rim Kaiju and the Franchise/MonsterVerse’s Hokmuto, to Daiei's Gyaos and Legion; to Yonggu-Art's Yonggary. In addition, some of the fan made Equestrian characters from the story's readers and other groups on Fimfiction make cameos. Of the non-Toho and Hasbro appearances, [[Franchise/UltraSeries Land of Light giants]] and Equestrian versions of the cast of [[Franchise/SailorMoon Sailor Moon]] feasure prominently in the specials.
* MassSuperEmpoweringEvent: The creation of the Plasma Spark caused all the inhabitants of what was later called the Land of Light to mutate. They turned into a species of size shifting giants with the powers of flight, super strength, durability, surviving in a vaccuum, and energy beam projection to become the Ultra race. A family of the same race out in orbit unwent similar, but slightly different mutations, and became Zone Fighter and the Zone Family. Unlike most examples, a vast majority of the empowered choose to use their abilities for good. Only Belial and a few other bad eggs exist.
* MasterApprenticeChain:
** Godzilla Senior and King Kong taught Godzilla Junior who in turn taught Mariner "Chibi" Moon.
** Starswirl the Bearded mentored Princess Celestia who in turn mentored Sunset Shimmer and Twilight Sparkle. Starswirl also mentored Princess Luna who in turn begins mentoring [[spoiler:Starlight Glimmer post HeelFaceTurn]].
* MeaningfulEcho: Aria bequeathing her power to Monster X and then him later doing it for her are both punctuated with them saying to the other, "Don't lose."
* MeleeATrois:
** The battle that starts the fic starts with simply Godzilla and Xenilla's factions duking it out...then the aliens, human mechas, and other kaiju all pile in. By the end over 50 kaiju were duking it out.
** [[spoiler:This would be the inevitable result of both Bagan and Grogar both being unleashed at full power, as not only would the two be fighting the heroes and Harmony, but likely with [[EvilVsEvil one another]]. Flurry Heart's BadFuture shows the end result of this will not be pretty.]]
* MidseasonUpgrade:
** [[spoiler:Their partial Burning Form and Spiral Fire Ray for Junior and Xenilla, both of which gained during the Ghidorah Arc.]]
** [[spoiler:Monster X performs a SplitPersonalityMerge with Kaizer Ghidorah, giving him an upgraded golden form at the end of the Ghidorah Arc. He got a taste of this at the end of the Enjin Arc, but this is the completed version.]]
* MirrorUniverse: Tarbtano released a blog about a mirror version of Terra where the good kaiju are evil and vice versa, but noted it will probably not influence the rest of the story until the sequel. [[spoiler: Though it ''does'' play a major part in the spin-off, ''Sound of Thunder''.]]
* MomentKiller: [[spoiler:When Enjin is seemingly defeated, Monster X and Aria Blaze's tender moment is ruined when Bagan revives him and he grabs Aria.]]
* MonstrousCannibalism: The Gyaos here are far more mindless and primal compared to most Kaiju, and reflecting their animal like nature, will often turn to preying on weakened or injured members of their own flock to sate their insatiable hunger. The Albino Hyper Gyaos’s narration mentions that she had to fight off members of her own flock countless times whenever they try to attack her, [[spoiler: it finally comes to head after being heavily injured by Mothra in a fight and she’s forced to slaughter the remainder of her flock in self-defence]].
* MoodWhiplash: Happens to Aria Blaze and Monster X twice for different reasons.
** Monster X defeats Aria Blaze and has her completely at his mercy, leaving her no choice but to tearfully give up her siren heart necklace. [[spoiler: Before she does, Sonata Dusk manages to catch X completely off guard by nailing him in his (very human) [[GroinAttack joy department]], allowing the sirens to escape.]]
** See MomentKiller for what happened after the two teamed up and learned to like each other. The tone instantly shifts from tender and calm to frantic and dire.
* MookHorrorShow: Anguirus treats Garble and his gang to one once he returns to his true form.
* MoralityKitchenSink: Has characters from all over the spectrum. From the shiny white Mane 6 and Princesses, to the pitch black [[OmnicidalManiac Omnicidal Maniacs]] who revel in destruction. Among the heroes' allies are the incredibly destructive but noble Kaiju. Among the villains' forces are the Dark Hunters, who are also [[NobleDemon capable of heroism and decency]] when not working for the bad guys.
* MoralityPet: The Cutie Mark Crusaders are becoming this to Destroyah. While the latter party barely pays them any attention, the fact [[AxCrazy whom we are talking about]] has since never tried to harm them speaks volumes. They even managed to, much to all the kaiju's surprise, calm down the giant mare right when she was about to throw it down with Celestia.
* MortonsFork: Gigan, Irys, and Megalon get into one [[spoiler: once they learn the truth of Monster X's forgotten history and what spurs the transformation into the extremely dangerous and out of control Kaizer Ghidorah. If they tell Monster X about what happened either he'll break under the knowledge of what his evil half did and transform into Kaizer. If they don't tell him and he finds out, he'll feel betrayed and turn into Kaizer. And considering his wish to Bagan was to have his memory restored, he's ''is'' going to remember eventually...]]
* MuggingTheMonster: Aria Blaze detects a being emitting a great deal of hatred and rage and seeks it out to feed. Only it turns out to be Kaizer Ghidorah, who is so powerful that even with the power boost she gets from feeding on his emotions, all she can do is run.
* MultipleChoicePast:
** Defied with Xenilla. Unlike the movie which gives two origins for Spacegodzilla a.k.a Xenilla, the Amalgam'verse continuity and the origin scene shown explicitly name Mothra Lea's mother as the unwitting culprit when she accidentally carried some of Godzilla Senior's cells into space and Biollante had nothing to do with it.
** Giranbo is so ancient and has such a spotty record that it's unclear exactly what she was, an archdemon or extremely powerful fae are two possibilities.
* TheMultiverse: Many of the MLP ExpandedUniverse, such as the ''Power Ponies'' and [[WesternAnimation/MyLittlePonyEquestriaGirls Equestria Girls]] realms are present, and even targeted by the BigBad in addition to the main realm, Equestria. Additionally all Equestrian Worlds, and even the kaiju homerealm of Terra, have their own MirrorUniverse.
* MundaneSolution: Situation? An abandoned ship washes aside on the mermare capital of Mako Island with clear signs something weird happened to the crew. The mermares contact Princess Celestia to let her know something's up and want to get the boat back to them. Problem? The magical storm surrounding Mako makes it excessively difficult to pilot a tow ship to it and is strong enough to keep out all but alicorn-magic-enhanced levels of flight. Princess Celestia's solution? The one-way barrier is only on the surface of the water so just send Godzilla in full kaiju form to swim under it and having him pick up the boat and walk out.
* MundaneUtility: How does Captain Blueberry Frost first put Godzilla Junior's strength to use? Betting on him in a Tug'o'war contest.
* MusicSoothesTheSavageBeast: When under attack while trying and failing to mind control him, Aria Blaze unconsciously alters her tune and briefly calms down Kaizer Ghidorah with a new melody.
* MyKungFuIsStrongerThanYours:
** Aria Blaze studied martial arts, which allows her to briefly contend with Monster X. However, he notes that a mere student cannot hope to beat an elite soldier with training and battlefield experience. [[spoiler: She later takes up lessons from him during the siren's EnemyMine alliance with X and shows great improvement.]]
** King Sombra boasts that he was taught magic by the dark sorcerer Grogar himself, so no magic training Princess Cadance has could possibly compare. Cadance proves him wrong by getting the advantage and boasting she was taught magic by Princess Celestia.
* MyMasterRightOrWrong: Slight Deconstruction. When Monster X confesses following orders is just about the only thing he can ever remember doing, Aria Blaze quickly notes how little he knows about his new master, the BigBad, and this could lead to trouble.
* MySignificanceSenseIsTingling: As alicorns are more in tune with the dimensional barrier being breached; Twilight, Cadance, Luna, and Celestia all get headaches from the Kaiju's arrival. Cadance got it doubly so as she was pregnant with Flurry Heart at the time.
* MysteriousParent: ''The Eclipse Times'' confirms what was implied since chapter 17. [[spoiler: Harmony is Celestia and Luna's mother.]]
* MythologyGag:
** As a joke on their companies' rivalry, the Toho kaiju use the word 'Daiei' in place of the word 'hell'; and the Daiei kaiju use 'Toho' for the same word.
--> '''Godzilla''': Lady, what the Daiei are you doing?
** [[spoiler: Bagan’s history in this fic as a former guardian of Earth alongside a previous incarnation of Mothra and Battra is a nod to the cancelled Mothra vs Bagan movie where Bagan was an ancient protector of the Earth who tried to wipe out humanity. In fact all of Bagan's traits are effectively an amalgamation of all the scrapped movie versions mixed with the game version's power.]]
** Anguirus and Varan's status as Guardian Beasts is likely one to the original [[Film/GodzillaMothraKingGhidorahGiantMonstersAllOutAttack ''Giant Monsters All Out Atack'']] script, with those two having been replaced by King Ghidorah and Mothra for the final film; thus their status in the story is resuming the original intended one.
** Mothra Lea playfully biting Godzilla Junior's tail is a nod to the fact nearly every continuities' incarnation of Mothra has bitten their continuity's Godzilla's tail for one reason or another.
** Princess Celestia was apparently offered the title of "Queen" during her 1,000 year solo rule, granted she turned it down as to not appear too high above the populace and seem unapproachable. During production of Friendship is Magic, she ''was'' going to be a queen but ExecutiveMeddling lead to the change to avoid the GodSaveUsFromTheQueen trope association.
** Blueblood is given the full title of "Archduke Prince Heir Apparent". Similar to Celestia, Prince Blueblood was going to be "Duke Blueblood", but was changed. The story makes sense of both of the titles by calling him an archduke, which is the equivalent title to a non-ruling prince.
** This isn't the [[Film/GameraGuardianOfTheUniverse first time]] we've seen a Gyaos get blinded by camera flashes.
** Monster X's opening combo against Enjin is the same opener he used on Godzilla in ''Film/GodzillaFinalWars''.
** Gigan and Monster X's handshake stand-in of crossing their forearms and bumping them is identical to a gesture between Gigan and Megalon in "Godzilla vs. Megalon".
** Despite not appearing in any movies, Enjin is not an original character. The original version of Bagan proposed for the 1984 Godzilla reboot had Bagan being composed of three shapeshifting monsters fused together, Enjin being one of them. Mizu and Doragon are the other members of the trio.
** When Mirror!Gigan loses an arm fighting the Malice Mares, he makes a replacement made of twin chainsaws just like the upgraded form from ''Film/GodzillaFinalWars''.
** Rainbow Dash's mother, Rainbow "Radiance" Dash Senior, is basically [[WesternAnimation/MyLittlePonyG3 Generation 3 Rainbow Dash]]. Her attire is a grown up version of the "Newborn Cuties" incarnation from Generation "3.5".
** Megalon does Godzilla's infamous tail-slide dropkick from his movie in the battle against Grand King Ghidorah.
** [[spoiler:Film/ShinGodzilla was [[FanNickname given the name "Nightmare Godzilla"]] before his official name was given. Shin Godzilla makes an appearance in this story as the result of ''Nightmare'' possessing Godzilla.]]
** [[spoiler:Junior uses his [[Film/GodzillaVsHedorah Atomic Breath to fly]] against Grand King Ghidorah. Rutherford's reaction to it is even the DVD chapter for it modified to fit the Yak's speech pattern.]]
** ''Eternal Dilemma'' revealed all three prior generations of My Little Pony existed in some form or another, suffering cataclysms that ended the three previous eras. The modern Generation 4 inhabitants are descendents of the older three generations, such as [=G4=] Spike being heavily implied to be a direct descendent of [=G3=] Spike who in turn was a descendent of [=G1=] Spike.
[[/folder]]
[[folder:Tropes N - Z]]
* NameAmnesia: X has amnesia and his masters only saw him as a weapon; [[NoNameGiven so they never named him]]. They would [[YouKnowTheOne use X as a designation]] so they knew what they were talking about. After giving up a chance to recover his memories, since that risks unleashing his SuperPoweredEvilSide Kaizer Ghidorah, he declares that [[MeaningfulRename from now on, "X" will be his true name]]. [[spoiler: For the record, his original name was [[YouAreNumberSix Praetorian Guard 094]].]]
* NeckSnap:
** [[spoiler: Human]] Kaizer Ghidorah does this to Enjin. Due to Enjin's HealingFactor it doesn't kill him, but does slow him down long enough to be thrown into a freezing river and end up at the bottom of a lake.
** Queen Beryl finishes off a weakened Golden Glow this way.
* NiceJobBreakingItHero: Hero is a bit of a strong word to describe the Sirens and the Dark Hunters, but their plans to [[spoiler: find Sonata's attacker and get back her gem fail horribly]].
** [[spoiler: By kidnapping Princess Twilight and refusing to let her go, they end up bringing the Terran Defenders into the conflict, and awaken Mothra Lea's dark side]].
** [[spoiler: Aria needlessly brutalizing Sci-Twi out of fear and revenge only drives her to fearfully embrace Zephyrus' Wendigo magic, transforming her into an even more horrific form of Midnight Sparkle. Even after Aria and X win the fight against Frostbite Sparkle, she contintues to beat on Sci-Twi, convincing Wallflower that they are monsters. This drives her to use the Memory Stone against X, allowing Boreas to possess X's body]].
** [[spoiler: Gigan vengefully attacking Godzilla derails the plan to defeat the Windigos and creates even more hostility and violence]].
** In the end [[spoiler: their scheme becomes AllForNothing: they fail to retrieve Sonata's gem, Aria has to retreat from the possessed X while burning with uncontrollable rage, and Adagio and Gigan walk away not only hurt, but crushed by regret for inadvertantly giving the Windigos even more power]].
* NiceJobFixingItVillain: Destroyah pulls this, albeit completely unintentionally, when she attacks the [[spoiler: Timberwolf pack]] about to kill the Cutie Mark Crusaders.
* NinjaPirateZombieRobot: When Megalon goes Trick-or-Treating with Pipsqueak, he wears a pirate outfit despite being a alien cyborg beetle.
* NoBisexuals: Averted. While not put at the forefront, several bisexual or possibly homosexual characters are mentioned in passing with no negative connotations. One of them, Blade Dancer, is arguably the main secondary heroine of the story.
* NoHoldsBarredBeatdown:
** [[spoiler: Aria Blaze flies into a rage after seeing Monster X bleeding, transforming into a Kaizer Ghidorah-like form and utterly ''trashing'' Enjin alongside a recovered X.]]
** [[spoiler: She later does this to Sci-Twi when she catches her, enraged over what she did to Sonata. Had Zephyrus not intervened, Sci-Twi would've been knocked out cold]].
* NoSocialSkills:
** Anguirus knows a lot about civilization, but not manners or etiquette. Because he [[BlatantLies obviously doesn't enjoy]] being around Ki Seong, he goes to Rarity to learn some to try and fit into society while stuck there to avoid trouble.
** Godzilla Junior similarly has a bit of a problem. While he is aware of a lot of modern life from observation and presumably second hand information from Lea, he has no clue what flirting or courting is. As such things of the sort either fly over his head completely or he grossly misunderstands them; such as thinking ponies and humans gave each other flowers as a edible treat since they are herbivores/omnivores.
* NobleDemon:
** Xenilla, when compared to his second in command. He has his goals, but won't act out for the sake of destruction unless he sees the need too. He at least had the decency not to blow up Fluttershy's cottage upon crash landing inside it. [[spoiler: Being on the receiving end of 'the stare' helps.]]
** Monster X plays this trope in spades, [[spoiler: killing several of Legion's soldiers for attacking a pony who couldn't hope to fight back, and even bandaging said pony up before ditching him]].
* NoodleIncident: On both franchises no less. The alien kaiju reference but refuse to talk about some sort of "Radio incident with the Kilaaks", and the Equestrians bring up some destructive event only referred to the "Chocolate Milk accident". What exactly happened isn't mentioned.
* NoSelfBuffs: Despite the fact that some of the displaced kaiju can use Equestrian magic, they cannot use that to charge up into their kaiju forms, the benign magic that triggers the transformation must be external in nature.
* NoSell: Dragons would have more luck shooting Anguirus with a water hose than they would using their fire. [[spoiler: Displayed spectacularly by Anguirus casually walking through a massive cone of fire completely unfazed. He IS a 'fire monster' after all.]]
* NotDistractedByTheSexy: Godzilla doesn't ignore Blade Dancer's flirtatious actions. He just has no idea what the context is and just gets confused as to what in the world she's doing.
* NotSoDifferentRemark:
** Aria Blaze and Monster X come to something of an understanding during the former's training with the latter upon finding out both are victims of circumstance and are wanting back something they've lost. Both have a concept of "home" they're missing and barred from getting back, Aria can't return to the sea, her literal home, because of her human form and Monster X can't return back to his metaphorical home due to his lost memories.
** The non-canon April Fools day special defends [[spoiler:WesternAnimation/MyLittlePonyG3 when Megalon, Sonata, and Pinkie Pie meet the G3 Pinkie. Both 'Pinkie Pies' hit it right off and Megalon points out that for all of its differences, G3 still had redeemable factors G4 carried on with.]]
** While at first annoyed by Mariner Chibi Moon, Junior comes to realize she very similar to himself as a child, and her idolizing him is very similar to how he once acted towards King Kong. This results in him volunteering to mentor her in the powers she copied from him.
* NotTheIntendedUse: The Siren Heart necklaces can't be removed by any outside force except their wearer, as Monster X found out when he tried to take Aria's and got a invisible blow back force. [[spoiler: He later uses this to revive Aria after Enjin choked her into unconsciousness, making a lunge at her necklace and using the blow back to jostle her awake.]]
* NotWhatItLooksLike: While Mothra Lea is communicating with him telepathically, Rodan presses Rainbow Dash's forehead to his so that she can join the conversation. When it is over, the two are incredibly embarrassed when the bystanders, including Rainbow's parents, think they were doing something intimate.
* OOCIsSeriousBusiness: In Chapter 44, Flash Sentry is very concerned about Sunset Shimmer's situation. It is enough Mothra Lea notices that even while he is kindly speaking to Twilight and she is obviously crushing on him, his mind is elsewhere.
* OfficialCouple:
** Monster X and Aria Blaze become this over the course of the Enjin arc.
** Blade Dancer and Xenilla become this some time between the Crystal Empire arc and the Ghidorah arc.
** Anguirus and Ki Seong become this after [[spoiler: the death of Jeog.]]
** After a lot of [[TrollingCreator teasing both in and out of universe by Tarbtano,]] Godzilla Junior and Princess Luna become this in chapter 38.
* OffscreenMomentOfAwesome:
** This story's version of ''Final Wars''. Godzilla, Mothra, Anguirus, Rodan, Gamera, Yonggary, King Caesar, Raiga, Baragon, Gorosaurus, Manda, Gomora, and Varan [[spoiler: AND Xenilla]] vs. Grand King Ghidorah, Gigan, Monster X, Orga, Hedorah, Megalon, Gyaos, Mechagodzilla; and the alien invasion fleets.
** Ki Seong's restaurant gets invaded by several Destroyah babies. The next time we see her, she's somehow tamed them.
* OhMyGods: Both casts frequently use their franchise creator's names.
-->'''Godzilla Junior''': "Good Tanaka!"
* OlderThanTheyLook: Quite a few characters on both sides. The only protagonists not being a case of this are Godzilla Junior, the Mane 6, Xenilla, Destroyah, Mothra Lea, and Blade Dancer.
** Princess Celestia and Princess Luna are each roughly 1,020 years old, though their rapid aging rate as fillies makes it hard to determine exactly how much older Celestia is. Queen Chrysalis, Discord, and Tirek are all a decade or two older.
** [[spoiler: Princess Cadance is also over a millennium old chronologically, but was frozen in time for over 98 decades as a baby so she's only physically in her late twenties.]]
** All of the Guardian Beasts are over 70,000 years old with Anguirus being the oldest. Due to a combination of their magical origin and being sealed for most of that time, they're all still in their prime.
** The Sirens are technically over 1,000 as well, but the magical portal Starswirl sent them through to the human world was also a time portal to the present; meaning they are only physically in their twenties. They can also pass for high schoolers, allowing Aria and Adagio to infiltrate Canterlot Highschool.
** Grand King Ghidorah's age is vague, but his inner monologues show he is at least 100 million years old.
** All of the Dark Hunters except Irys. Kaizer Ghidorah a.k.a Monster X is 370 years old, Gigan is over 200 years old, and Megalon is roughly 100 years old.
** [[spoiler: Bagan, Harmony, and Grogar are all billions of years old.]]
* OneGenderRace:
** Both the Mothra and Gyaos species are made up of parthenogenic females. This results in the male Mothra Leo[[note]]protagonist of at least two of the Rebirth of Mothra films[[/note]] being [[GenderFlip genderflipped]] into Mothra ''Lea'', who is otherwise identical as a character (WordOfGod confirms all of this). Tarbtano stated that since the species [[JustifiedTrope reproduces asexually]], it would make more sense biologically for each offspring to be a clone-daughter to the mother. On top of that, Mothra is nearly always portrayed as and thought of as a female kaiju anyway.
** Mermares are all female, and reproduce by mating with other species. If the child is male, it will be the father's species with some Mermare traits. If the child is female, it will be a Mermare with some of the father's traits. The Sirens were born from an unknown union of two mermare princesses and two unidentified males that was never replicated. [[spoiler:Turns out to be the ''three'' Windigos.]]
* OneSteveLimit: Subverted overall. Multiple characters with the same name show up, but usually with another moniker to distinguish them.
** There are three Godzillas in the story verse at the same time: all of the Heisei timeline's Japanese Godzillas and both American Godzillas. However, only the original Japanese one is named Godzilla, while the other two from the American 1998 and 2014 movies are named Zilla and Gojira respectively. Justified, however, as they're ultimately three different species that just happen to look similar. There have also been three Japanese Godzilla's in the backstory, just not all at the same time; the original from 1954, his son "Senior" was active from the 1980s and 1990s, and then Senior's adoptive son "Junior", who is the current incarnation.
** Subverted as well. The story also has two King Ghidorahs in its backstory, the planet killing OmnicidalManiac and the future people's bio-weapon who was based off the original. Both are referred to as King Ghidorah, with the space monster being called Grand King Ghidorah to tell them apart.
** Mechagodzilla is another subversion. While the Millennium Mechagodzilla is referred to as Kiryu, the other two exist and are both called Mechagodilla.
** Like the Godzillas, there have been multiple Mothras over the eons with each successor being the last one's daughter. It is somewhat subverted when it appears that, as with the case of the current one Mothra Lea, each one had a distinguishing name with "Mothra" almost being more of a title.
** The Heisei Rodan and the Rodan who appears in the story are separate characters, but both called Rodan due to looking similar.
** There is also more than one Rainbow Dash. The Rainbow Dash we all known from the show is Rainbow Dash ''Junior'', an updated version of the Generation 3 Rainbow Dash being her mother.
** Years before Starlight Glimmer appeared, there was a male member of the Royal Guard singularly named Starlight.
* OurDragonsAreDifferent: Of several varieties no less.
** Equestrian dragons are as they appear in the show. They can mature naturally as well as experience rapid growth caused by excessive greed, at the cost of becoming rabid. Greed-growth isn't reliant on just material greed and can be caused by craving anything from prey to revenge. Most aside from Spike are a bunch of jerks.
** Grand King Ghidorah, Des Ghidorah, and Kaizer Ghidorah are alien lifeforms that just happen to resemble dragons. They are some of the most powerful kaiju, all have three heads, two tails, and wings. Des Ghidorah and Kaizer Ghidorah are six limbed quadrupeds whereas Grand King Ghidorah has only four. Each can travel through space and manipulate gravity with various unique powers.
** While unseen, dragons are mentioned as having existed on Terra in the past, being animalistic versions of TheFairFolk. When magic largely was extinguished across the planet, they reverted into normal animals like how fair folk humanoids turned back into humans, dragons turning back into crocodiles and snakes.
* OriginsEpisode:
** Chapter 19 shows us the origin of Xenilla and Princess Cadance.
** Chapter 24 shows us the origin of Monster X.
** The Mother's Day and Father's Day specials double as ones for Godzilla Junior and Princesses Luna and Celestia respectively.
** Chapter 38 shows us the origin of King Sombra and Starlight Glimmer.
* OurHippocampsAreDifferent: There are three kinds of merhorse variants in the setting.
** Seaponies are the smallest and simplest, resemble oversized seahorses and are ruled by King Leo in Aquestria.
** Mermares look like a hippocampus with fins for forelimbs, but using the magical charms they wear around their necks they can take on the appearance of a terrestrial equine with a wet mane. They do this to either work above sealevel or, given that they are an all-female species, find a mate. Any offspring born from such unions will overwhelmingly be female and Mermares themselves, with any rare sons being the father's species. Most of them used to be nomadic, but those in the Eastern ocean amassed at Mako Island and named the founder of that island the first queen. Since then they have lived under an elected monarchy, with the current ruler being an old friend of Celestia and rival to Luna named Queen Maui.
** Sirens also resemble hippocampi and were born from the union of three windigoes forcing themselves upon a pair of mermare princesses. They specifically draw power from song magic by inducing certain emotions in people that listen to their singing.
* OurMermaidsAreDifferent: Equestrian mermares are a distinct, [[OneGenderRace all female species]] inhabiting the Celestial and Lunar seas on either side of Equestria. The Lunar sea ones are primarily nomadic and live in small pods, whereas the Celestial pods have congregated together under a queendom with Mako Island as their capital. Bits of various real life Mermaid lore was used, so their behaviors can vary wildly. The Sirens are distinct trio of individuals which are the result of a crossbreeding of two mermare princesses [[spoiler:being captured and raped by three windigos.]]
* OurSirensAreDifferent: Besides the Dazzlings, Raiga ends up as one for her new Equestrian form, though has no clue how the singing magic works. There's also mention of the Dazzlings; MirrorUniverse counterparts, called the Muses, who were apparently a benign version of the trope.
* OutsideContextProblem: A key reason the Princess Celestia organizes and alliance between the displaced six kaiju and Equestria is because any other monsters brought over from Terra would be this to Equestria's heroes. The kaiju both have experience dealing with species or individuals and can identify indications of their precense. It also notes the Equestrians are required to help the six kaiju do this task and native Equestrian threats can catch them off guard without proper know-how from the ponies. Specific examples include...
** Xenilla can sense ''something'' is lurking about but lacks magical knowledge or historical awareness, so he consults a mage and historian, Key Ring, as well as a guardsmare, Blade Dancer, to figure out [[spoiler:King Sombra had returned.]]
** Gigan is caught off guard by the two Power Pony world's liberal use of ToonPhysics, meaning his typical strategies of "Beat it to death" or "Gut it" don't work on Mane-iac.
** Starlight Glimmer's AntiMagic dark spells which can seperate magic from the user are quite potent on Equestrians, but her reliance on it comes back to bite her against an enraged and non-magic using Godzilla.
* PaleFemalesDarkMales: Zig-zagged with the over all designs of the transformed kaiju. While some of the female kaiju do have a dark colored coat (Destroyah), all of the male kaiju are predominantly darker colored (Godzilla, Anguirus, etc.); whereas the female roster have brighter and lighter colors (Mothra).
** JustifiedTrope with Irys, she's albino. If she was a normal gyaos she'd be reddish-brown.
* ParentalSubstitute: Multiple examples both for the Terrans and Equestrians and towards each other.
** Azusa Gojo [[note]](later Azusa Aoki after she married)[[/note]] raised and is still seen as the mother of Godzilla Junior after he imprinted on her upon hatching, even adopting her surname when it's suggested he take one. She accepted the imprinting and happily refers to him as her son even to this day.
** The Equestrian Founders, namely Starswirl the Bearded, raised Princess Celestia and Luna after they were discovered in the Everfree Forest. Starswirl especially was seen by the sisters as their father, even to the point one reason Luna became Nightmare Moon was she incorrectly felt he favored her sister as a daughter.
** The Burst Family fostered Starlight and Moonbeam Glimmer after their birth parents were killed in a dragon attack when Moonbeam was a child and Starlight was a toddler.
** Later on after being his student for awhile, it's implied Mariner Chibi Moon sees Godzilla Junior as a father figure given her family is a continent away and not able to visit.
** It's pretty heavily implied the Crusaders have begun to see [[spoiler:post HeelFaceTurn Destroyah]] as a motherly or aunt-like figure, especially Scootaloo.
* PartialTransformation: The Kaiju turned Equestrian characters retain some physical traits and their [[spoiler: now diminished]] powers. This is shown best by Destroyah (now massive pegasus mare) still having her horn, causing many characters and readers alike to mistake her for an alicorn.
** [[spoiler: Played up with horrifying implications when more kaiju are sent to Equestria with fewer and fewer changes.]]
* {{Permafusion}}: [[spoiler:Bagan]] turns out to be a permafusion between three ancient kaiju; Doragon, Mizu, and Enjin. While they can summon these components into battle, these aren't the components themselves but rather mindless avatars and extentions of [[spoiler:Bagan]]'s will.
* PiggybackCute: Not romantic example with Chibi Moon frequently riding around on Godzilla Junior's back [[HugeGuyTinyGirl or head]] or the Cutiemark Crusaders seating themselves on Destroyah's wings and back.
* PhysicalGod:
** The Alicorns of Equus all qualify, but Celestia and Luna more than anyone else. It is shown they are often holding back their full power but will drop it when pressed. Godzilla Junior was able to deadlift multiple royal guards in full armor and toss them around during a misunderstanding, yet an enraged Princess Luna was able to fight him on physically even terms.
** While not explicitly gods, Discord, Queen Chrysalis, Lord Tirek, and King Sombra all qualify, each being so powerful they can conquer kingdoms in an afternoon. The only Equestrians on par with them in a head-on confrontation areexperienced alicorns or high end kaiju-in-Equestrian bodies like Xenilla. [[spoiler:They're all also students of [[GodOfEvil Grogar]].]]
** Mothra Lea, and by extension Mothra and Battra before her, is explicitly referred to as a deity in her bio, and more than lives up to it.
** In terms of sheer power, higher tier kaiju come off as this, including Junior, Xenilla, Grand King Ghidorah, and [[spoiler:Kaizer Ghidorah.]]
** [[spoiler:The three Magic Nexuses, Bagan, Harmony, and Grogar, are all this in spades. Each are so immensely powerful only one of the others is powerful enough to actually have a chance of beating them in a straight fight and could easily kill ''Grand King Ghidorah'' if they so chose.]]
** [[spoiler:The Leviathan fusion is explicitly called the [[DestroyerDeity God of Destruction]] and is on the same tier as the Nexuses.]]
* PiecesOfGod: [[spoiler:The Elements of Harmony and Rainbow Powers are revealed to have been created by Harmony from part of her divine power at some point in the past, and thus are this trope. It's implied Celestia and Luna may be another piece. WordOfGod implies Harmony reuniting herself is a GodzillaThreshold she can do but will only do in the most dire of situations.]]
* PillarOfLight: Happens whenever one of the transformed kaiju get hit with enough magic to return to their original form. Often bright enough to light up the night and be seen miles away.
* PlanetTerra: The world of kaiju and humans is referred to as Terra and the inhabitants are called such. For example the Anteverse kaiju that come from the rift portal are invaders from another realm, but the likes of Godzilla and Mothra are called Terran kaiju.
* PlayAlongPrisoner: Like brother like brother apparently.
** When Junior is getting escorted out of the dungeons by a large number of guards while wearing large manacles and a thick muzzle, it’s made abundantly clear that he could break out and escape anytime he wants but simply goes along with it, at least until a particularly obnoxious guard begins antagonising him repeatedly prompting Junior to [[BreakingTheBonds snap his restraints, burn through the muzzle]] and knock said guard into a wall before promptly holding out his hooves to be chained again. He later explains that he didn’t break out earlier because of the chance innocents might get caught in the crossfire and also because he was starting to suspect the whole brawl earlier happened due to a misunderstanding. Later, after seeing all his allies in the throne room, he promptly breaks out of them again by accident to run up to them.
** Xenilla allows himself to get arrested by the Crystal Empire so that [[spoiler:he'll be in the perfect position to ambush King Sombra. However, while he was strong enough to easily break free, he didn't anticipate that the prison would have an alarm system, so he needed Blade Dancer's help to escape without alerting Sombra.]]
** Grand King Ghidorah reveals that he was ''never'' enslaved by any of the races who he's worked for. He was playing along the entire time for his own amusement.
* PowerCopying: Sirens can take on traits of whoever they've sung to, especially if there is a strong emotion involved; platonic or romantic. Aria Blaze takes on traits similar to Monster X and Kaizer Ghidorah, [[spoiler:especially after they fall in love and thus her love ballads are much more potent on him,]] gain gravitaional control powers and enhanced physicality. Adagio Dazzle ends up with an enhanced form that is a gestalt of energies copied from the Rainbooms, Gaea Everfree, Monster X, and Gigan.
* ThePowerOfFriendship: While ''friends'' is a big stretch, [[spoiler:it takes Princess Cadance and Xenilla teaming up and launching a combined assault to defeat King Sombra.]]
* ThePowerOfHate[=/=]ThePowerOfLove: The power source for more advanced magic spells is partially emotion based. Good magic uses will, love, happiness, and hope. Dark magic, on the other hand, is fueled by greed, hatred, and wrath.
** Siren magic uses the former in their songs, acting like a HatePlague. [[spoiler: Though Aria Blaze has discovered a new type of enchantment song that seems to use the latter, having a calming effect on the listener.]]
** [[spoiler:Xenilla manages to channel his love for his allies into a brief power boost sufficient to, for a brief moment, overpower Grand King Ghidorah and position him for Junior to run through on his spines.]]
** A CentralTheme of the story is about which of these is truly stronger. The recurring answer is that Love is.
* PowerTrio: The core group of benign kaiju was this back on Terra:
** TheLeader: Godzilla junior
** [[TheSmartGuy The Smart Girl: Mothra
** TheLancer: Anguirus
** Later, TheRookie: Rodan
* PowerfulAndHelpless: [[spoiler: Aria takes on her Kaizer form to fight the Boreas-possessed-X...but realizes that the only way to win would be to kill X's body, something the psychotic Boreas would be willing to do himself. Having no other option, Aria is forced to make a ''very'' bitter retreat]].
* PragmaticHero: [[spoiler: Princess Twilight ends up willingly working with her kidnappers and treating them kindly. Not just out of the goodness of her heart, but because she realizes it is the best way to defuse tensions between them and her friends]].
* PrayerIsALastResort: Megalon, despite not really knowing what he's doing, bids a prayer to his master [[spoiler:to save Gigan's life when his brother is teetering on the edge of death, citing their loyalty to it and that Bagan is a god; thinking a god can do the impossible.]] Most assuredly ''not'' PlayedForLaughs.
* PregnantBadass: It's later confirmed Princess Cadance has been pregnant since before the story started, and she still takes on King Sombra to defend the Empire. Granted she's early term and wasn't even aware of it until after a medical exam.
* PrettyPrincessPowerhouse:
** Crash through her roof, beat down half her and her sister's guards; and you'll soon be questioning why Princess Luna even needed guards in the first place. [[spoiler: She actually managed to knock out the ponified Godzilla before fainting from her injuries.]]
** Celestia is even stronger than that. 1,000 years more experience and a [[WonderTwinPowers proximity based power boost]] from Luna give you enough strength to floor six fighting Kaiju-Ponies in one burst.
** Cadance shows this herself, personally fighting Sombra alongside Xenilla.
** Twilight Sparkle defended the Tree of Harmony admirably and even slew some of the Gyaos.
* PrincessesRule: Equestria's extensive use of this is lampshaded when Xenilla points out that, as ruler of the Crystal Empire, Cadence should be referred to as "Empress". When he questions why this isn't the case, none of the ponies he asks can answer -- apparently, the thought never occurred to them.
** It's more or less implied later that this was a side effect of Celestia's rule. She ''was'' offered Queenship, but turned it down as to appear more approachable by the then scared populace. Her rule was so good that 1,000 years later "Princess" has become the defacto highest title for a female ruler in emulation of her, making this a JustifiedTrope.
* PsychoForHire: [[spoiler:Bagan]] offers his minions rewards for helping him. All he can offer Grand King Ghidorah, Hedorah, and Gaira is the chance to cause destruction and feed off the carnage. Grand King Ghidorah even flat out admits he was ''never'' controlled by any alien race: he just allowed them to THINK he was.
* PsychoRangers: The AntiVillain counterparts to the above PowerTrio.
** TheLeader[=/=]BlackKnight: Monster X
** TheLancer: Gigan
** DumbMuscle: Megalon
** [[SixthRanger Fourth Ranger]]/DarkActionGirl: Irys/Hyper Gyaos
* RaceAgainstTheClock: [[spoiler: Rodan can only exist in FanFic/TheShimmerverse for 24 hours, meaning he has only a day to help that world's Princess Sunset Shimmer stop a plot to destroy Canterlot.]]
* RadiationImmuneMutants: Subverted with all natural Equestrians. Because Equestria has so much free roaming magic in it, all the natural species like ponies and other species are so used to all that energy flying around that radiation doesn't affect them positively or negatively. PlayedStraight with Godzilla Jr. and Xenilla, who are mutated dinosaurs with an acquired radioactive power source.
* RankScalesWithAsskicking:
** ''Princesses'' of Equestria, Luna and Celestia on the Equestrian side; and ''King'' of the Monsters, Godzilla on the Kaiju side.
** On the villain side, almost all of the major Equestrian villains [[spoiler: Grogar's students]] had/have a royal title; Sombra was a tyrant king of the Crystal Empire for a time, Chrysalis is the queen of the changelings; and going off the comics, Tirek was the crown prince in a faraway kingdom.
* RasputinianDeath:
** [[spoiler: Enjin gets one, after several chapters of [[WhyWontYouDie absolutely refusing]] to be critically damaged.]] [[note]] It takes several fights with Monster X and Aria Blaze, its body becoming unstable, getting blown to bits by Kaizer Aria, two mass internal attacks by the most powerful siren in the world at that point, a full on beat down by a super charged Monster X, finding out its unique weakness and exploiting that one shortcoming; and then hitting it with an attack strong enough to one-shot some lesser kaiju at the exact right spot to rip its core out[[/note]] [[spoiler: However, even ''that'' failed to truly kill him as [[DemonicPossession a fragment of his core possesses Sunset Shimmer]]. Eventually, Rarity manages to remove him from Sunset's body and then throw him so that he's hit by Grand King Ghidorah's beam, which finally completely destroyed him.]]
** [[spoiler:Grand King Ghidorah also gets one. He receives several bad injuries from the Dark Hunters, has one of his jaws broken by Junior, has parts of his body ''melted'' by Junior in his Burning form, receives several more such wounds from Burning Xenilla, is run clean through on Junior's longest dorsal spine through one of the wounds the Dark Hunters inflicted which also splits his core (his ''heart and brain'') clean in half, has his body be torn apart by the countless souls he'd absorbed escaping his wrecked core, has a multi-megaton explosion go off in his wing that wrecks it thanks to Rarity throwing the overloading, unstable Enjin into it, and ''only'' dies when Godzilla Junior, Xenilla, and the ghost of Godzilla Senior obliterate him with a Family Spiral Fire Ray that had to overpower his continent busting WaveMotionGun to reach him.]]
* ReasonableAuthorityFigure: Princess Celestia naturally. Mayor Mare also gets marks for not letting the hysteria some were spreading about Godzilla Junior get to her and take time to understand his intentions were good. Whereas some were calling for Junior to be brought to court, she wrote a request to the Princesses to grant him a full pardon of all charges and to be granted citizenship.
* {{Reconstruction}}: The story as a whole could be taken as a reconstruction of tone for the Showa Era Godzilla franchise, which had far more gags and humor than the latter two most stories base themselves on. Numerous LighterAndSofter and PlayedForLaughs elements absent in other Godzilla fan works, even other My Little Pony crossovers, are given as much spot light as the more serious moments. Numerous readers have commented that the story's balance of humor and seriousness is a large factor in keeping it from [[TooBleakStoppedCaring going off the deep end]] like some others have.
* RedEyesTakeWarning:
** The only feature an injured pony can see as a hooded figure [[spoiler: (Monster X) ]] looms over them is it's glowing red eyes. Subverted as the figure just saved them from several Symbiotic Legion and even bandaged them up due to an honor code, so the being meant them no harm.
** [[spoiler: Played straight with Aria Blaze after she absorbs a portion of Kaizer Ghidorah's powers. When his influence and power flare up in her a key indicator is her irises turning from violet to red. While she burns out a vast majority of the kaiser powers by the end to supercharge Monster X, she does still have a few speckles of red in her eyes when she wills it.]]
** Inverted with Godzilla Junior. While his eyes do light up when using a charged beam or nuclear pulse attack, the glow is white. When his eyes ''do'' turn red it's because he's scared.
* RelatedInTheAdaptation:
** In the Halloween special, Pipsqueak mentions Octavia is his cousin, while no known relationship between them exists in the show.
** Raiga was a generic kaiju back in her own movie. Here, she is a member of Godzilla's species and considered an honorary cousin.
** Princess Cadance is the descendent [[spoiler:(time displaced daughter)]] of Princess Amore.
** Prince Blueblood is a descendant of Princess Platinum, while the show never clarified why he had a royal title.
** It's implied Private Pansy was an ancestor of Fluttershy due to a similar surname.
** ''The Sentry Legacy'' reveals Indigo Zap and Flash Sentry are cousins, Flash's father Stalwart Sentry and Indigo's mother Mulberry Zap [[note]]maiden name Mulberry Sentry[[/note]] are brother and sister. As with Pipsqueak and Octavia, no known relation exists. ''Legacy of Everfree'' reveals Gloriosa Daisy and Timber Spruce are their second cousins, since their father Salty Sentry is the cousin of Stalwart and Mulberry.
** [[spoiler:The Windigos are the rapist fathers of the Siren trio. Adagio and Sonata are half-sisters (different fathers, same mother) and Aria is their cousin, born of the other two's mother's sister.]]
** Because they are both creations of the M Nebulans in this version, Gigan and Megalon consider each other brothers.
** Zigzagged with the Sirens, as it wasn't clear if they were related or not at the time of their story arc. In the story Adagio and Sonata are half sisters while Aria is their cousin, in canon they are all related after all and are presumably full sisters.
** Despite initial speculation, defied with the Legendary Picture's incarnation of Godzilla, here called Gojira. While he and the modern day Godzilla lineage closely resemble each other, it's established Gojira is a Permian age natural kaiju whereas the Godzilla line are mutated dinosaurs completely unrelated to Gojira. The resemblance is just coincidence.
** [[spoiler: Xenilla (Spacegodzilla) and Mothra Lea are technically half-siblings, since Xenilla was born from a mixture of Godzilla Senior's blood and Lea's mother's magic.]]
** It is mentioned that Sunburst's parents adopted Starlight and Moonbeam Glimmer.
* RoboFamily: Several.
** Gigan and Megalon, the two M Nebulan cyborg kaiju, were made by the same creators with Gigan as Megalon's prototype. They regard each other as brothers.
** An organic version is the artificially created Guardian Beasts, whom all share traits and were all patterned after Anguirus. Exact terminology varies but they consider each other siblings or at least cousins.
** [[spoiler:Due to them not having a father and being created from scratch from Harmony, Celestia and Luna are an organic version as artificial Equestrians and consider each other sisters.]]
* RevengeThroughCorruption: Aside from wanting to use her for her magical potential, [[spoiler: the Windigos think using Sci-Twi as their vessel of destruction is a good way to spite Harmony]].
* RoguesGalleryTransplant: Often a side effect of the multiple continuities merging on the kaiju side.
** By merit of now being in a shared universe, the Gyaos from Daiei act as this for multiple heroic kaiju; functioning as the StarterVillain kaiju for Toho kaiju Mothra Lea and Godzilla Junior. [[note]]To give a comparison, this would be akin to Marvel and DC sharing a universe with the Joker being an enemy to Spider-Man.[[/note]]
** In the prequel, ''Tales of the Amalgam'verse: Godzilla meets King Kong'', the first real opponent the teenage Godzilla Junior faces is the similarly young Gaw from the Joe [=DeVito=] Skull Island prequel novels.
** [[Franchise/UltraSeries Ultraman Belial]] squares off against Monster X in a prequel special.
** The 2019 Halloween Special features [[Series/UltramanTiga Giranbo]] as its main antagonist.
* TheRemnant: ''The Bridge: A Shimmer in the Dark'' features as its main antagonist Countess Mircalla, the last remaining one of Nightmare Moon's Generals, leading a reserve force that is all that's left of the latter's shattered army. Notably, she's lost faith in the cause, [[MyMasterRightOrWrong but keeps going out of debt to her former master]] (and because she knows that if she doesn't, the AlwaysChaoticEvil Nightmare forces will tear her apart for disloyalty).
* RocketlessReentry: [[spoiler:Xenilla and Godzilla Junior's battle with Grand King Ghidorah [[HighAltitudeBattle ends up at the edge of the edge of the atmosphere]] (due to Grand King Ghidorah dragging Junior up there and Xenilla coming up to save him). After King Ghidorah has been destroyed, the two are exhausted and plummet back to earth where the rest of the heroes rescue them. Justified as Xenilla has to have surviving atmospheric re-entry as RequiredSecondaryPowers and Junior can survive molten lava, it was the impact with the ground that was the threat.]]
* RunningGag:
** The characters of the two franchises use some of their principal creators' names whenever they say 'God'.
*** The ponies say "Faust" and "Bonnie", referencing Lauren Faust and Bonnie Zacherle, the principle concept creators for Friendship is Magic and My Little Pony respectively. Any character created Post Season 3 and for the Equestria Girls movies replaces "Faust" with "[=McCarthy=]", likely referring to writer Meghan [=McCarthy=].
*** The kaiju roster says "Tanaka", referencing Tomoyuki Tanaka, one of the creators of the kaiju genre and the producer on almost all of Toho's monster films up until his death in the late 90s.
** Every time Gigan enters one of the Equestrian human worlds, he either (much to his dread), encounters Mane-iac or gets hit with a hair care product.
** Whenever a kaiju and sirens are all in the same world together, the sirens' van gets damaged or wrecked.
** The CMC constantly botch pronouncing the pronunciation for Destroyah's name, many referencing all the alternate namings she's been given.
** Godzilla Junior never can understand a word Prince Blueblood is saying.
* SamaritanSyndrome: Flash Sentry suffers from this, frequently finding himself assisting ponies he stumbles across. This is why he missed out on a lot of important events in the past. [[spoiler: Unfortunately this gives him a lot of guilt thinking he could have done something to help stop a crisis instead of having been busy getting a hospitalized colt his lost toy.]]
* SaneBossPsychoHenchmen: WordOfGod notes that this was the exact plan of [[spoiler:Bagan]]. He wanted minions that would do what he needed from them easily, so what better way to do that than get people in his forces that would do horrible things on their own? Among his ranks are [[Film/WarOfTheGargantuas Gaira]] (a mutated cannibalistic psychopath), Hedorah (a WalkingWasteland who only lives for destruction), and [[ForTheEvulz King Ghidorah]] (a serial planet-destroyer).
* ScarsAreForever: Played with. Godzilla ''does'' have a large number of permanent scars from past battles, but his powers repress them from sight most of the time. When he's especially drained of power however, they reemerge.
** Luna has a permanent scar under her wing, from a long ago battle with Tirek.
** Monster X has several scars on his face and torso, but they're obscured by his body armor.
* ScarSurvey: As mentioned above, both Luna and Junior are marked up and give each other a once over.
* SealedEvilInACan:
** [[spoiler: Bagan]], the most powerful being to ever walk Terra and the greatest calamity sentient life has ever encountered was sealed underneath Attu Island, an unassuming small landmass in the north Pacific.
** The original Gabara was sealed in a chamber beneath Aokigahara a.k.a the "Suicide Forest", but was able to astral project.
** [[spoiler:Grogar, the Nexus of Dark Magic and a being on par with Bagan and Harmony, was imprisoned in his realm of Tambelon by Harmony, the entrance to which is beneath the Crystal Empire. Chrysalis and Sombra are planning to release him.]]
** Queen Beryl is imprisoned within the Negaverse, a dark realm underneath Neighpon. She can send her influence and forces through portals onto Neighpon, but as long as the Silver Crystal is outside of her realm she can't leave.
* SecondLove: [[spoiler: Aria Blaze becomes one to Monster X, who had a wife in his old life as an Xilian.]]
* SemiDivine: [[spoiler: Princess Celestia and Luna are direct creations of Harmony and the closest things to children she has. The sirens are also this to a lesser degree, as their windigo sires were direct creations of Grogar.]]
* SevenDeadlySins: Seems to be the overall motif of [[spoiler:Grogar's students and Dark Magic. Tirek was greed, Sombra was wrath, Discord was gluttony (in the broader sense of hedonism), and Chrysalis is lust.]]
* SexualKarma: While nothing is shown due to the rating, there is a trend where individuals honestly in love with each other tend to have a lot of intimacy.
** [[spoiler: Both Aria and X as well as Blade Dancer and Xenilla have had both couples get intimate and the action generates a ''massive'' amount of love magic.]]
** By comparison any character who has or fancies the possibility of raping another is rightfully treated as disgusting and monstrous.
* ShapeshifterBaggage:
** Rarity asks where the Kaiju's mass comes and goes when they transform. Twilight theorizes that the magic that transformed them converted excess mass to energy. Otherwise, the Kaiju-Converts would be so heavy they would fall through the floor.
** Changelings cannot alter their size when they shapeshift.
* SharedFamilyQuirks: Subverted as they aren't related by blood by merit of the younger being adopted and the older being a "bastard child" of sorts, but both of Godzilla Senior's sons Xenilla and Godzilla Junior are actually pretty similar in some ways. Both of them have a habit of being very observant, have photographic memory; [[ArsonMurderAndJaywalking and question why the Crystal Empire royals aren't Emperors and Empresses]].
* ShipperOnDeck:
** Celestia, upon seeing how flustered but happy Luna was at getting roses from Junior, decides to get the latter shifted to the Night Guard. She lately playfully tells Junior Luna's AffectionateNickname she knows [[note]]"Lulu"[[/note]] she uses, knowing it'll fluster Luna.
** Megalon was on board with [[AbhorrentAdmirer Mane-iac's]] plan to marry Gigan, even offering to be the best man at the wedding. Granted, [[TheDitz Megalon]] didn't understand that Gigan would rather have his head blown off ([[Film/GodzillaFinalWars again]]) than marry Mane-iac.
** Rarity, Pinkie Pie, and Applejack support Anguirus' and Ki Seong's mutual crush.
** Mariner "Chibi" Moon is a huge Princess Luna and Godzilla Junior fangirl. Finding out the two are confidants and Junior's being in Luna's private chambers [[note]]nothing lewd, he was recovering there or waking her up[[/note]] leads to her instantly hoping they're an item.
* ShipSinking:
** When some fans started shipping Rodan and Thalia, the author was quick to torpedo the ship. Tarbtano pointed out Thalia, whom is owned by a friend of his, is already HappilyMarried to her husband Dallas, and she is meant to act as a CoolBigSis to Rodan. Additionally, said interaction was based off the author's own CoolBigSis in real life, meaning shipping them creeped him out.
** As for Chapter 30, Blade Dancer's affections for Godzilla Junior have died off after her confusion period due to her accepting he didn't return the feelings, [[spoiler: and her focus moving onto Xenilla. It's also well implied Xenilla is starting to return them.]]
** Also in Chapter 30, Mothra Lea's reaction to being asked if she and Godzilla are married is to laugh and say that's ridiculous.
* ShoutOut: Lots of them, both to official content from the source and outside franchises, fandom works, and unreleased series:
** Xenilla often calls Godzilla Jr. "''Icka'brod''", which in their language means "''brother''". This is a nod to a kaiju fan film, ''Godzilla x Kaiju Killer'', where a kaiju named Stalkus used it to call another character the same thing.
** Spike gives a quick barrage of them when listing off the names of various historical Equestria figures, all of which are the names of or directly relate to other fictional horses:
*** Lady Amal'thea - ''Literature/TheLastUnicorn''
*** Masked Tornado - [[{{Franchise/Zorro}} The name of Zorro's horse with his rider's masked motiff.]]
*** Dame Epona - [[Franchise/TheLegendOfZelda Link's Horse seems to be his Equestrian version.]]
*** Shadowfax - [[Literature/TheLordOfTheRings Must be Equestria's Gandalf.]]
*** Esperanza - [[WesternAnimation/SpiritStallionOfTheCimarron Spirit's mother had been doing well.]]
*** Silver Scout - [[Radio/TheLoneRanger The Wild West in Equestria sure had one heck of a law-pony.]]
** The exchange between Luna and Junior as the former is about to launch the latter into battle is a {{WebAnimation/RWBY}} reference.
** The Cutie Mark Crusaders are fans of a show about monster hunters starring [[Series/{{Supernatural}} the Whinnychester Brothers]].
** The plot of a book Blade Dancer reads in one scene resembles ''Film/{{Ladyhawke}}''.
** The design of King Sombra's scythe closely resembles the scythe he used in the fan animation ''Fall of the Empire''.
** Xenilla's NoHoldsBarredBeatdown of Sombra at the climax of their fight is based on the one Superman gives Mongul at the climax of ''Comicbook/ForTheManWhoHasEverything''.
** Kaizer Ghidorah's attack on Aria Blaze is based on a scene from ''Film/TheWolfman2010''.
** The entire sequence with the rampaging baby Destroyah swarm is a walking ''{{Film/Gremlins}}'' reference, even using the theme song during the rampage.
** The baby Destroyahs talk like [[WesternAnimation/LiloAndStitch Stitch]].
** [[spoiler:When Irys, Gigan, and Megalon are fighting King Ghidorah,]] Megalon states that he didn't bring [[Franchise/{{Pokemon}} Fairy types]].
** Several of Kaizer Ghidorah's moves during his fight with Grand King Ghidorah resemble ones [[Anime/DragonBallZBrolyTheLegendarySuperSaiyan Broly]] used.
** Monster X says gravity control requires skilled movements, a reference to both [[WesternAnimation/AvatarTheLastAirbender Bending]] and [[Franchise/StarWars The Force]].
** Megalon says, "TOOO THE BOSS BALL! [[IdiosyncraticWipes Danenenea]]!" This is a reference to a RunningGag on ''Series/Batman1966''.
** The BigBad is shrouded in shadow, making his features except for his eyes impossible to see. This references Zoom from ''Series/TheFlash2014''.
** The supercharged Monster X's finishing move is a DivingKick whose motions and visuals are a shout out to ''Franchise/KamenRider''.
** Moonbeam Glimmer's backstory is one to ''Manga/MetroidManga''. [[spoiler:As children, Moonbeam Glimmer and Samus Aran both attempted to befriend a dragon, only for the dragon to turn on them and leave them orphans.]]
** A lot of the MirrorUniverse Gigan's dialogue and actions resemble Lobo's from ''WesternAnimation/SupermanTheAnimatedSeries''.
** When Mirror Gigan acquires a chainsaw, he says "[[Franchise/EvilDead Groovy.]]"
** Mariner Chibi Moon is basically [[Franchise/SailorMoon Chibi Usa]] in Equestrian form.
** The name of the mermare capital [[note]]Mako[[/note]] and several mermares that lived or are living there [[note]]Nixie, Ondina, Rita[[/note]], seem to be ones to ''Series/MakoMermaidsAnH2OAdventure''.
** Godzilla Junior's Nightmare form [[spoiler: looks like a ponified ''Film/ShinGodzilla''.]]
** A spell sequence Sunburst and Key Ring work through has the KonamiCode.
** [[spoiler: Chibi Moon begging Nightmare Godzilla to stop closely mirrors Molly's plea to Entei from ''Anime/Pokemon3''.]]
** Godzilla Junior, Xenilla, [[spoiler:and Godzilla Senior's ghost working together to destroy Grand King Ghidorah resembles the Family Kamehameha from ''Anime/DragonBallZBrolySecondComing''.]]
** Everyone working together to [[spoiler:save Junior and Xenilla from falling out of the upper atmosphere is a reference to the ending of ''Anime/KillLaKill''.]]
** The Halloween costumes and song the sirens use in ''"Hocus Smo'cus"'' are from ''Film/HocusPocus''.
** Following up from their daughter's status, Chibi Moon's parents and their teammates base in Neighpon closely resemble [[Franchise/SailorMoon Sailor Moon, Tuxedo Mask, and the other core four Scouts]].
** A lot of Giranbo's design, actions, and dialogue draw from [[Film/TheWizardOfOz The Wicked Witch of the West]], ''Literature/{{It}}'', and [[Franchise/ANightmareOnElmStreet Freddy Kruger]]. She also shape-shifts into several ''Franchise/UniversalHorror'' monsters.
* ShownTheirWork:
** The creators have shown a huge knowledge of both the kaiju movie franchises and My Little Pony. Fairly obscure references to how magic works for the latter is brought up several times, and the kaiju side of the crossover also include several little known kaiju like Raiga [[spoiler: and unmade creations from Toho like Bagan, Enjin, Doragon, and Mizu]]. Similarly it's not at all uncommon to have My Little Pony characters from the IDW comics (Nightmare Rarity), books (Electra), or prior generations (Generation 3 Rainbow Dash as the current one's mother) show up.
** The creators did an interesting take on what happens when you transform one species into another but keep some of the original form's traits. To merely exist in the gargantuan forms they did without imploding, [[RequiredSecondaryPowers most kaiju would need to be made of extremely strong muscles, bone, and tissue.]] This explains how Godzilla can walk through concentrated cannon fire with barely a flinch. Keep about 1% of this ability when shifted into pony form, it explains why despite not technically being trained athletes; most of the ponified kaiju are incredibly strong and very tough. [[note]] Arguably best shown in Godzilla Junior's fight with the Royal Guards (It was a misunderstanding). One guard repeatedly struck him in the ribs and gut to [[NoSell absolutely no effect]]. A sideways backhand by Junior dented in his bronze body armor and sent the guard hurling into a wall. [[/note]]
** Tarbtano has paleontology and herpetology as his main interests and frequently shows his research in the works. For starters, dinosaurs and pterosaurs are referred to as two separate groups as opposed to having the latter lumped into the former. Rodan is also mentioned to be covered in pycnofibres instead of scales or bare skin like many pop culture depictions of pterosaurs. Eno in the ''Dinosapien'' side story as well as his raptor opponents are all accurately feathered and extremely bird-like. Additionally several changes were made to the ''Jurassic Park'' series to make it more accurate and have less handwaving. This includes changing the raptors to explicitly be ''Deinonychus'' (see AdaptationalSpeciesChange), giving the ''Deinonychus'' full plumage once more pure clones were created and giving the ''Tyrannosaurus'' proto-feather manes.
** The flashbacks to the ancient humans circa 70,000 B.C. all show them with features most similar to Eastern Africans and Austronesian aborigine regardless of their locations, such as upper-central Asia, Japan, or Europe. This matches paleoanthropology models as the phenotype genes for many modern racial groups didn't emerge until tens of thousands of years later. Additionally, they are entirely modern humans anatomically and not Hollywood styled cavemen, as modern humans had already existed for at least four times that long ago.
** The Korean aspects are well researched. Ki Seong's name pronunciation and given name-surname arrangement are accurate to real Korean, with a silent "e" and the gumiho's backstory very closely echoes several folktales, namely "The Fox Sister".
** Zoisite in the ''Franchise/SailorMoon'' inspired omake is male like he was in the source material, unlike the original English dub which changed them into a woman.
* ShutUpHannibal:
** Monster X gives one the dark voice in his head [[spoiler: (later shown to be Grand King Ghidorah)]] when it attempts to take over his mind.
** When Xenilla gives Blade Dancer a speech deriding love as an addiction that controls everyone, she responds by punching him in the face (hard enough that he ''actually feels it''), states that when she's felt love it's been ''real'', not an addiction, and ends by stating that if he's ever felt love, then by his own logic he's as much a slave as anyone else.
** During their fight, Xenilla interrupts Sombra's fight monologue by blasting him in the face, all while being rather bored and annoyed that Sombra won't stop talking.
-->'''Sombra''': You brute! Have you not evolved the ability to address your better?!\\
'''Xenilla''': No words needed. I'd have a human gesture for you, but I don't have any fingers at the moment.
* SiblingTeam:
** Princesses Celestia and Luna, as in canon. In fact, here they even have WonderTwinPowers and get a power up from being near each other.
** [[spoiler:Junior and Xenilla eventually reconcile and become this in time to defeat Grand King Ghidorah together.]]
* SiblingYinYang: Ironically with both franchises.
** Princess Luna is much quicker to the trigger than Celestia, being very distrusting of Godzilla Junior until seeing his true colors. And while she was ready to throw her name into the ring if needed, Celestia's priority during the castle hall brawl was to stop it and figure out what was going on rather than join in.
** Godzilla Junior is selfless, heroic; while quite [[GeniusBruiser smart]], he has lackluster social and speaking skills. Xenilla is very articulate in his speech, easily comes off as an intellectual; but is AmbiguouslyEvil or LawfulNeutral at absolute best.
* SickeningCrunch: During her [[NoHoldsBarredBeatdown merciless beating]] of [[spoiler: Sci-Twi]], Aria kicks her several times in the chest. A crunch reveals that Aria ends up breaking one of her ribs.
* SleepCute: When Rodan and [[FanFic/TheShimmerverse Princess Sunset Shimmer]] sleep inside a hollowed out tree, they end up snuggling and holding each other.
* SlidingScaleOfIdealismVersusCynicism: Given the two franchises' tones, this really is to be expected to bounce around a lot. Over all it does lean on ''idealism''.
** On one hand the fully blown fights between the characters can be quite brutal, with visible injuries and often lethal end results. Most of the kaiju heroes do no abide by ThouShallNotKill. Situations can quickly turn dire and many of the heroes are carrying around more than their fair share of psychological baggage. Characters both good and evil can and do die, and many dark horrible things are trying to destroy Equestria.
** But on the other hand, the heroes from both franchises are fighting against those dark and horrible things without losing their moral center. Having to resort to lethal force to stop a monster from killing dozens of innocent lives doesn't turn someone into a sociopathic AntiHero. And ThePowerOfFriendship can often manifest itself in unorthodox ways.
* TheSmurfettePrinciple:
** While the [[ImprobablyFemaleCast ponies]] obviously don't need any help in this regard, extra effort is taken to avert this for the Kaiju. Mothra and Irys/Hyper Gyaos are established as being members of [[OneGenderRace all-female]] species, and the usually ambiguous Destroyah is made explicitly female. That said, the trope still applies to the Kaiju CastHerd[=s=] individually, as they each have only one female member: The Terran Defenders have Mothra, The Mutations have Destroyah, and Monster X's group has Irys.
** JustifiedTrope in the case of Destroyah, given there are only two Mutations in the story, so their numbers are gender balanced.
** [[spoiler:Of the three Nexuses of Dark Magic, only Harmony is female, though Bagan is technically genderless.]]
* SoProudOfYou:
** Azusa Gojo/Aoki was the one who helped raise the young dinosaur who [[KidHeroAllGrownUp grew up]] into Godzilla Junior, the two seeing each other as mother and son. She couldn't be prouder when her influence helped him grow into a hero that saved both her and San Francisco.
** Godzilla Junior himself invokes this trope when he disagrees with Princess Luna's assertion that her father figure, Starswirl the Bearded, would see her as a failure for turning into Nightmare Moon; bringing up her helping to save Canterlot and growing into a beloved diarch since then.
** [[spoiler:Godzilla Senior shows this to Xenilla and Junior after [[BackupFromOtherworld helping them kill Grand King Ghidorah]].]]
* SoldierVsWarrior: Appears to be a core distinction between the more sympathetic antagonists, such as Monster X (soldiers) who are just following orders, and the more malign members of the roster who do so for their own prideful gains such as King Sombra (warriors).
* SomethingElseAlsoRises: Pegasi and Alicorns are shown to have a tendency to flare their wings out whenever they’re excited or flustered (mostly the latter):
** Blade Dancer does this when Xenilla is questioning why she has Junior’s scent over her and she mentally curses the fact that her wings are doing this, describing it as a natural bodily reaction.
** Luna gets this, alongside a LuminescentBlush, when she see’s that Junior brought her roses as thanks for everything she did for him.
* SpannerInTheWorks:
** Mothra Lea and Godzilla Junior prevented the Gyaos flock from claiming the Tree of Harmony and Canterlot. The BigBad did not anticipate their interference at all.
** If Xenilla hadn't been sent to the Crystal Empire, King Sombra would have likely succeeded in assassinating Princess Cadance.
** [[spoiler:Bagan doesn't want Monster X's friends to know he's in the Equestria Girls world, so when he brings Irys there so she can eat, he makes sure to drop her off in the city where Crystal Prep High School is instead of where Canterlot High School is so there's zero chance she'll run into X. However, several Canterlot High students were visiting the city for the red carpet premiere of a new Daring Do movie. Irys runs into Photo Finish, who had witnessed a fight between X, the Sirens, and Enjin, and took photos, thus alerting Irys to X's situation.]]
* SparedByTheAdaptation:
** Grand King Ghidorah, Baragon, Xenilla, Destroyah, and numerous other kaiju are all still alive due to changes in the timeline.
** Due to the Terran Defenders and other mecha being present, many of the Jaeger teams who died in '''Film/PacificRim'' are still around.
** [[spoiler:Stacker Pentecost]] survived the events of ''Pacific Rim'' as well, thanks to Godzilla destroying the Rift the first time along with Mutavore, preventing his HeroicSacrifice from being needed to close it.
** While implied to have survived in canon, Film/{{Dinocroc}} is confirmed to have done so here, as well as having been the same monster in ''Dinocroc vs Supergator'' and survived that film as well.
* SpotTheImposter: In Chapter 36, Anguirius does this when Jeog impersonates Ki Seong, as he notes various out of character moments -- claiming not to have had any plans with her niece Gentle Leaf (which he knows for a fact she did), being much more openly flirtatious than Seong usually is, and most importantly [[spoiler: doesn't know who he really is, which Seong recently revealed she does]].
* StepIntoTheBlindingFight: Irys gets a slight advantage over King Ghidorah by extinguishing the torches around them. She isn't hindered as she can use echolocation. While he can glow and hear her echolocation, he can't pinpoint her.
* StockholmSyndrome: An example that is both exaggerated, defied, and justified. The Sirens and and the Dark Hunters kidnap [[spoiler:Princess Twilight Sparkle, after menacing her friends, after they mistake her for her human counterpart, who has stolen Sonata's heart. Seeing how badly Sonata was traumatized, and how much both groups care about her, as well as grasping at how it was a logical but huge misunderstanding Princess Twilight not only decides to help them, but willingly works with them to find her human counterpart. She lies to Gloriosa that she had always been their friend, and eventually offers Adagio the chance to return to Equestria, with the only quid pro quo that they don't kill anyone. It is justified however in that the sirens and hunters never do anything malicious to her, give her a lot of freedom, and X and Gigan, the very two who kidnapped her, apologize for it. Twilight for her part stays to help moderate them by her influence, making the best of the situation while not excusing her captors actions. It's obvious no one really wants to keep her captive, they just can't release her without risking an irrate Mothra and Celestia coming in guns blazing for vengeance. When Twilight is finally let go by them, she considers the Sirens and Dark Hunters to be her friends...[[ForgivenButNotForgotten but she still admonishes them for kidnapping her and causing so much havoc]], albeit ''very'' subtly, and makes it clear ''she's'' calling the shots from now on]].
* StoryBreakerTeamUp: Despite there being a large difference in power between the strongest kaiju and the strongest Equestrians, measures were taken to avoid this. The Equestrians are still presented as very competent and having unique skill sets that complement the heroic kaiju's. And the situation the core group of kaiju are in require the Equestrians to get back to full strength. Also counts as {{Defied}} as WordOfGod is the inspiration for the story was in part due to many Godzilla crossover fics being this trope and consisting of 'drop Godzilla into the setting and let him kill everything,' and thus he wanted to do something different.
* StumblingInTheNewForm: Most of the kaiju who were ported to Equestria didn't have this problem, as all had prior experience walking on four legs before (or six legs in the case of Mothra Lea). Rodan, meanwhile, went from a bipedal pterosaur-kaiju to a hexapodal, quadrupedal griffin. He falls flat on his face the first few times he even attempts to ''stand'', and stumbles clumsily for a few chapters afterward.
* SufficientlyAnalyzedMagic: A rather odd example of an inversion. Twilight and Mothra submit some of Godzilla's hairs to various spell-based tests, and find out his biological radiation is nearly identical to highly unstable magic.
* SummonBiggerFish: Multiple:
** Let [[http://youtu.be/pBpGalivZ4Q this]] be a hint. [[spoiler:Garble and his gang are attacked by Anguirus after he transforms back into a {{Kaiju}}.]]
** Flock of 0.25-12,000 ton Gyaos and Super Gyaos flying towards Canterlot? Throw up a shield and let the 60,000 ton Godzilla have at it.
** [[spoiler:The souls Ghidorah had absorbed that Junior freed, with some aid from from Harmony, allow Godzilla Sr. to manifest to help his sons destroy Ghidorah once and for all.]]
** ''The Lost World RPG'' has two key examples. Instead of going in on foot to sabotage the Biosyn poacher camp, the Ingen team instead antagonized an angry ''Mamenchisaurus'' into rampaging into the camp. The final boss fight against the Ultimasaurus entailed summoning comparably sized the ''Film/JurassicParkIII'' ''Spinosaurus'' to fight it.
* SuperMode:
** [[spoiler: Aria Blaze after unleashing all the energy she's been siphoning off Kaizer Ghidorah gains a transformed state similar to Midnight Sparkle.]]
*** [[spoiler: Which then boomerangs around with Aria helping Monster X unlock a halfway state between him and Kaizer Ghidorah he can still control during the kaiju brawl with Enjin.]]
** [[spoiler:Raiga enters one after Mirror Starlight and Mirror Lightning Dust channel Manehatten's entire power supply into her, gaining InstantRunes all over her body and becoming powerful enough to overpower and come close to ''killing'' [[BigBad Mirror Godzilla]]. According to WordOfGod, this is her true form she would've awakened in had she not awakened prematurely, and all the Guardian Beasts have a similar form for the same reason. Rodan accesses his during the FinalBattle of ''A Shimmer in the Dark'' when supercharged by Princess Sunset's magic, though in his griffin form rather than his true one like Raiga. Irys eventually accesses hers upon awakening as Guardian Beast Eta to battle Kaiser Ghidorah.]]
** ''Meltdown'' form for Godzilla Junior overclocking his nuclear reactor in his heart, entering a state similar to but not as extreme as the one his father perished from as indicated by his glowing patches burning blue-white rather than red. [[spoiler: Xenilla follows his example and gains it as well, though he can't control it as well.]]
* SuperPoweredEvilSide:
** Nightmare Moon and Nightmare Rarity for Princess Luna and Rarity respectively. The form comes with a large power boost, at the cost of their wishes and fears (being forgotten and being replaceable) being bastardized. [[spoiler: Nightmare bonding to Godzilla Junior results in the Shin Godzilla looking Nightmare Godzilla.]] Princess Celestia has her equivalent in Daybreaker.
** Kaizer Ghidorah for Monster X, mixed with a SplitPersonality. Whereas Monster X is a rational AntiVillain and very powerful in his own right, Kaizer Ghidorah is at least twice as strong but with a nonstop berserk rage.
** [[spoiler:The Leviathan serves as one as well as a FusionDance between Godzilla Junior, Zilla Junior, Gojira, and the Showa Godzilla. All of their heroic traits are surpressed and it is a barely conscious engine of destruction driven solely by wrath.]]
* SuperStrength: Most of the kaiju both in their natural forms and Equestrian bodies. Godzilla Junior gets a unicorn body, but he is easily stronger than even multiple earth ponies. The only ones with comparable strength are the older alicorns like Princess Celestia, Luna, and Cadance; along with King Sombra.
** Aria Blaze acquires a degree of this [[spoiler: after her drawing power from Monster X/Kaizer Ghidorah makes her start copying their powers.]]
* TheSwarm: Multiple ones:
** Gyaos
** Legion
* TakesOneToKillOne: [[spoiler:Seems to be the case with [[PhysicalGod Nexuses of Magic]]. Bagan, Harmony, and Grogar are so much stronger than everything else that the only thing that stands any chance of killing any of them in a one on one fight is one of the others. Bagan outright admits even Grand King Ghidorah or all three of his Aspects together wouldn't stand a chance against Harmony and goes after her personally (and even he only manages to tie). To note, ''both of them'' were only at 30-40 percent of their full power at the time. While Bagan ''was'' defeated and [[SealedEvilInACan imprisoned]] in the ancient past, it took literally the ''entire'' Mothra and Battra species in order to do so and the Ancients expected nothing less than a small army of monsters stronger than Godzilla and created with Terra's entire remaining mana reserves to have a reasonable chance of defeating him when he eventually escaped. The only one who was ever able to beat Grogar was Harmony, and even then just ''barely'', and according to WordOfGod more out of planning and luck than any difference in their strength. If the Halloween special is taken into account, even Godzilla Earth stands no chance at all against something as strong as them, as he is killed by the Leviathan, a combination of four different Godzillas that is outright described as a God of Destruction and a direct equal to any one of the Nexuses.]]
* TakeThat:
** Tarbtano does '''not''' like the "Tyrantestia" and "Waifu Luna" memes at all, taking several jabs at them. [[note]] To put it into context, ''The Bridge'' was created in the middle of 2013, during earlier life of the [=FiM=] fandom. During said time Princess Luna was a unanimous EnsembleDarkHorse who very frequently was the target of affection in romance stories. Celestia by contrast was very frequently hit with the RonTheDeathEater shtick and was commonly portrayed as a villain, oppressor, or very unattached neutral. While both fanon interpretations for the two had mellowed out dramatically by late 2014, they were still quite prevalent in 2013.[[/note]]
*** Celestia even specifically states they are "Not tyrants." when Luna initially proposes imprisoning the kaiju until a solution can be found, practically firing shots at the ''Tyrantestia'' meme by name. And just to drive the nails in deeper, it's stated several times that in the past Princess Celestia was offered the title of ''Queen'' [[note]] Almost any time in the early fanon Celestia was called a Queen it was a case of GodSaveUsFromTheQueen[[/note]], but she turned it down for perfectly moral and selfless reasons.
*** Bold Rush is basically an OCStandIn for a lot of 'Self Insert O.Cs x Luna' fic character's who are politically powerful and try to charm Princess Luna via feats. [[IdiotBall He tries to kill the ponified and chained up Godzilla with a sword.]] Several [[SuperStrength effortlessly snapped chains, a twisted sword, and smashed ribs later]].... An unscathed Godzilla forced Bold Rush to be sent to the infirmary with his own (heavily annoyed) squad calling him an idiot.
** A much more lighthearted example would be a small jab at Hasbro for making every benign female ruler under Celestia's sun "Princess ___". Xenilla points out the oddity of ''Princess'' Cadance ruling the Crystal ''Empire'', thoroughly confused why she isn't an empress.
** Continuing the trend of off headcanons aimed at the alicorn sisters, recollections about Equestria's past from both Thalia and Princess Luna herself take of the "Nights Rebellion" that started to grow just after Celestia defeated Nightmare Moon. This rebellion was effectively a complete {{Deconstruction}} of the "New Lunar Republic" fan creation, throwing every allegation that group has ever wielded against Celestia and Nightmare and utterly demolishing it while telling it off as horrifically untrue propaganda. [[note]]Such as Celestia being a tyrant who claimed the throne out of jealousy and tried to crown herself [[GodSaveUsFromTheQueen the queen]]. It's mentioned by Celestia herself that she was just doing the best she could in a chaotic situation and that was exactly what she was afraid of being incorrectly seen as doing.[[/note]]
** After several Flash Sentry haters complained about his brief scenes (including a cameo where he ''didn't even say anything'') and demanded he stop appearing in the fic, Tarbtano responded by giving him more scenes and promising to expand his role when the fic gets to the ''Rainbow Rocks'' timeline. Tarbtano also expressed displeasure that Flash became DemotedToExtra, stopped getting CharacterDevelopment, and was made to look like a total chump in ''Rainbow Rocks'' and ''Friendship Games'' just because of several fans complaining to Hasbro about him. Tarbtano pointed out that like Flash, Sunset Shimmer used to be hated by the fans, but became an EnsembleDarkhorse ''because'' Hasbro chose to give her more screen time and CharacterDevelopment in the later movies.
** After several rude comments bragging that the Godzilla from ''Film/{{Godzilla 2014}}'' would make mincemeat of the fic's version of the grown up Godzilla Junior and demanding Tarbtano replace the fic's version with the 2014 one, Tarbtano wrote a semi-canon blog of the MirrorUniverse's 2014 version losing to the MirrorUniverse's Godzilla Junior. Though to soften the blow to the 2014 creature itself, as Tarb's gripe wasn't with it but its FanDumb, the 2014 Godzilla did put up a good fight and the bout ended in a logical way.
** His words in the same blog imply Mirror Godzilla is one to the people complaining and demanding a DarkerAndEdgier Godzilla story. They got it: as the BigBad of a MirrorUniverse story.
** In part 2 of the April Fools special, one of the worlds Pinkie Pie, Sonata Dusk, and Megalon visit on their dimension hopping adventure is a blend of ''WesternAnimation/TitanicTheLegendGoesOn'' and ''WesternAnimation/TheLegendOfTheTitanic''. The trio were disgusted and called it an atrocity, especially the rapping dog and the octopus. When they arrive in ''Anime/{{Pokemon}}'', Sonata calls the adults in that world irresponsible for letting ten year olds wander a wilderness full of creatures that could easily kill people unsupervised.
** The villain Jeog is a playful jab at the MagicalGirlfriend trope, as Tarbtano would like us to know, just because something is a hottie in mythology does ''not'' make it "Waifu" material.
** Tarbtano has expressed a very pointed dislike for the [[Anime/GodzillaPlanetOfTheMonsters Anime]] [[Anime/GodzillaCityOnTheEdgeOfBattle Godzilla]] [[Anime/GodzillaThePlanetEater Trilogy]]. As such, the Halloween special set in the Anizilla universe is full of this. Highlights include:
*** The special is chock-full of intense and exciting Kaiju fights (whereas the movies themselves had essentially none), culminating in [[spoiler:Godzilla Earth being very soundly and viciously defeated (whereas in the movies it was a KarmaHoudini).]]
*** The usually-smug [[SinisterMinister Metphies]] goes insane at the sight of [[spoiler: Leviathan overpowering Godzilla Earth]], and is later shot by Maina before being ultimately gunned down by Haruo.
*** Maina very bluntly calls out Haruo, laying the blame for all of the death, destruction, and misery that happened so far squarely on him and his selfish actions (A common perception of Haruo's character in the movies). Haruo ends up [[HeelRealization agreeing]] and earnestly tries to repent.
*** While the special itself doesn't cover it, Tarbtano has said that if [[AdaptationalWimp Anime!Ghidorah]] fought [[spoiler: Leviathan, it would be [[CurbStompBattle instantly vaporized]] by Leviathan's [[OneHitKill "Hakai"]] ability]].
** The tendency for overdoing the scaling kaiju in modern media has been brought up a few times. Several villain kaiju or shapeshifters take on forms well over 200 meters tall up to a kilometer tall and are killed by the more traditionally scaled 100 meter range monsters.
* ThatCameOutWrong:
** Nearly ''everything'' Godzilla Junior said to Starlight when talking about his interactions with various female characters. Junior is oblivious and talks about things that were entirely platonic, while Starlight keeps thinking it's innuendos and that Junior really gets around.
** Synonyms are Monster X's worst enemy. Upon trying to take Aria Blaze's necklace (called the 'Heart of a Siren'), but learning only she can take it off; he demands she "Surrender your Heart to me.". Both parties were embarrassed.
* TheFaceless: Partially metaphorical, partially literal with Monster X. In his true form, his face is greatly obscured by a bone helmet fused to his head. [[spoiler: In human form he's wearing a white mask and scarf. When Aria Blaze hits him hard enough to crack part of the mask off, she asks why he's hiding his face. X's retort?]]
-->'''Monster X''': "This IS my face..."
* TheGoodTheBadAndTheEvil: An arc that more or less is this eventually comes up after the TimeSkip. The Dark Hunters mercilessly kidnap Princess Twilight, with the Terran Defenders and the Rainbooms trying to save her. [[spoiler: As it turns out they, along with the Sirens, were targeted by the human Twilight Sparkle, who stole Sonata's necklace, and they mistook Princess Twilight for her. She, along with Wallflower Blush, are in league with a psychotically evil group of Wendigos, albeit because the latter have convinced the former that they are fighting for a noble cause. It culminates in a large storyline where each side is fighting one another]].
* TheMirrorShowsYourTrueSelf: Much to his distress, Monster X sees Grand King Ghidorah appear in his reflection at a stream.
* TheReveal:
** The last paragraph of the bonus chapter is notable for this, as it reveals two previously unnamed characters. The first [[spoiler: Monster X]], appeared in an earlier chapter and was even the protagonist of the bonus chapter; going unnamed the entire time up until the last portion. The other was [[spoiler: Gigan]], whom [[spoiler: X]] had crossed paths with and despite the two holding a conversation, he also was not revealed until the end.
** It's eventually revealed that [[spoiler:Chrysalis, Sombra, Tirek, and Discord all learned dark magic from Grogar, who is actually the nexus of it and on a similar tier to Bagan and Harmony.]]
* ThoseWereOnlyTheirScouts: A group of Cloud Gremlins take control of a storm cloud and attempt to invade the weather factory of Cloudsdale. Since the storm cloud is protected by dark magic, it takes a bit of teamwork from Rainbow Dash and Rodan to stop it. Before they can celebrate, a much larger cloud carrying the main Cloud Gremlin force arrives, and the first wave even mentions they were just the scouts.
* TheStarscream:
** Most of the Mutations would gladly kill Xenilla and take over the faction if they had the chance.
** Grand King Ghidorah makes it clear he has no intention of being under [[spoiler:Bagan's]] power for long and is just biding his time. [[spoiler:In fact his entire motivation is to either become something or find something that can kill Reijuu/Bagan.]]
** [[spoiler:Queen Chrysalis joins Bagan's VillainTeamUp, but secretly plans to exploit it to restore her EvilMentor [[GodOfEvil Grogar]] to his full power, fully expecting EvilVsEvil to kick in between the two evil Nexuses of Magic at that point and has her money on Grogar emerging victorious. King Sombra soon joins her after Bagan resurrects him.]]
* ThoughtTheyKnewAlready: Xenilla had known Cadance was pregnant since shortly after meeting her, since his ability to sense through crystals tipped him off to two heartbeats in her vicinity. He never spoke up about it because he just assumed they knew.
* TeamTitle:
** Terran Defenders [[note]]Godzilla Junior, Mothra Lea, Anguirus, and Rodan[[/note]]
** Dark Hunters [[note]]Monster X, Gigan, Megalon, Irys[[/note]]
* ThemeMusicPowerUp: Many of the kaiju and Equestrians have motifs associated with them. When [[spoiler: Aria Blaze unlocks Monster X's SuperMode and the tide in the battle against Enjin turns, "Honest Eyes" by Black Tide plays while in-universe it's her song magic.]]
* ThouShaltNotKill: Discussed to some extent. Pretty well averted with both the Kaiju heroes and the Equestrian heroes when in dire situations. Godzilla Jr. and Mothra Lea have no qualms about mowing down hordes of gyaos if it meant protecting the civilians nearby; and neither Cadance or Xenilla pulls any punches against King Sombra. Unfortunately, a good chunk of the population is very much ''for'' this rule regarding their heroes and half of them are terrified that the Kaiju don't abide by it.
* ThreesomeSubtext: [[spoiler:It's heavily implied Gloriosa Daisy is getting as much a crush on Adagio Dazzle as she is Gigan, with those two also getting teased as having some feelings born of respect and also warming up to her.]]
* TimeMaster: Sci-Twi's telekinesis and portal magic gets altered into warping space and time as a result of her particular training. [[spoiler:Once Zephyrus takes full control of her body, he's able to freeze time for a short span and becomes almost impossible to actually hit in a fight. The only limit is the presence of Harmony's magic halts the time-freezes and they can only move 10 meters per stop.]]
* TomeOfEldritchLore: [[spoiler:Chrysalis possesses one, and implies Tirek, Sombra, and Discord possess the other three copies of it, all of which given to them by Grogar. It fits all the qualifications of it, including being evil and hideous in every sense. Legion describes Grogar's presence radiating from it as being comparable only to ''Bagan's''. The four books also each possess a portion of the spell needed to open Tambelon. They also appear to be NighInvulnerable, which is why King Caesar had to hide Sombra's instead of destroying it.]]
* ToonPhysics: Besides Pinkie Pie's antics, the Power Ponies world runs on this. Being a realm literally inside a comic book rated A for all ages, anything involving gruesome injuries or deaths are physically impossible. Like Gigan dropping Mane-iac from hundreds of feet in the air and trying (and failing) to stab her, neither work.
* TopGod: [[spoiler:Bagan, Harmony, and Grogar. While other beings in their respective worlds have a good claim to godhood either through being genuinely divine (Mothra Lea and the Princesses) or sheer power (Grand King Ghidorah and Grogar's students), Bagan, Harmony, and Grogar are leagues stronger than them. And in most of their cases, at one point or another served as a direct or indirect leader of a group of them (Bagan to the Mothra and Battra, Harmony to her daughters the Princesses, and Grogar to his students).]]
* TrappedInAnotherWorld: Dimension Tide sent the kaiju crashing into Equestria, and so far it's one way as there's no equivalent in Equestria to send them back.
* TraumaCongaLine: Sci-Twi grows through even ''more'' torment than in canon. [[spoiler: She is manipulated by the Windigos into being their minion, and horribly violates Sonata by stealing her gem. This results in her being chased by the Dark Hunters, and badly beaten by Aria, who goes so far as to break her arms and ribs in retaliation, and chokes her out. She ends up giving into hate, and is transformed into a more horrific version of Midnight Sparkle. Then after being blasted with the Elements of Harmony, Aria knockes her out cold with several punches to the face. Finally, Wallflower is manipulated by Zephyrus into erasing her memories, allowing the Windigo to posess her]].
* TruceZone:
** Celestia and Luna declare Equestria this between Terra Defenders and Mutations, due to the possible damage fights between them could cause. However, this only applies to the two factions, as helping fighting other threats is permitted.
** New Birth Island, where Biollante has made her home. She declares that the Defenders and Mutations' war will not happen there, and since she's powerful enough to restrain Junior and Xenilla, they have no choice but to obey her.
* TrustPassword: Monster X recites the time they dealt with the "radio incident with the Kilaaks" and what happened the day they first met to prove his identity to Gigan.
* {{Tsundere}}: Mane-iac goes from fighting Gigan to attempting to crush on him after him hacking off most of her PrehensileHair gives her a haircut she liked. All this happened in the span of five minutes. She turns into a full on {{Yandere}}.
* UltimateShowdownOfUltimateDestiny: The 2018 Halloween Special, the four main heroic Godzilla incarnations against the most powerful villainous one. [[Film/TerrorOfMechagodzilla Showa Godzilla]], Bridge's Godzilla Junior, [[WesternAnimation/GodzillaTheSeries Zilla Junior]], and [[Film/MonsterVerse Legendary Gojira]] vs. [[Anime/GodzillaCityOnTheEdgeOfBattle Godzilla Earth]].
* UncannyValley: This is Blade Dancer's in-universe reaction to seeing Godzilla in his true form, since it's just similar enough to his unicorn form that she met him in to be unsettling.
* UnhandThemVillain: When Destroyah grabs Mothra, Rodan says, "Hands off the bug!" She replies, "Okay." and throws her into him and Anguirus.
* UnstoppableRage:
** Princess Luna takes all the kiddie gloves off and throws everything she's got at Godzilla Junior after the latter beat down multiple guards. Thankfully it was all a big misunderstanding.
** To say Xenilla flies into one after being hit with Sombra's fear magic would be an understatement.
** Kaizer Ghidorah might as well have this as is primary trait. Upon sensing or seeing Grand King Ghidorah, ''nothing'' is going to stop him from trying to rip the latter to pieces. [[spoiler: It's mentioned during his CurbStompBattle against King Ghidorah that Kaizer was tanking so much damage and exerting so much force in his blows that he was [[{{Squick}} breaking his own bones]] from the effort, and even that doesn't stop him from severely mauling King Ghidorah.]]
** This later becomes deconstructed when [[spoiler: Aria finally lays a vicious smackdown on Sci-Twilight after what she did to Sonata. The beat down makes Sci-Twi so angry and fearful, she ends up embracing the power of the Windigoes. And when Aria again lays a smackdown again on Sci-Twi after she is defeat, the sight makes Wallflower think Aria is killing her, driving her to use the memory stone against Aria]].
* UnusuallyUninterestingSight: Vinyl Scratch is rather nonchalant when her radio show receives calls from ponies being attacked by Baby Destroyahs. Even when several of the little monsters destroy an entire wall of her studio, she starts the next track with hardly more than a raised eyebrow.
* UnrelatedInTheAdaptation:
** Zigzagged. Not of blood relation, but despite using his Final Wars design, Gigan here is not controlled by the Xilians. Instead he was chiefly a creation of and maintained by the M Nebula aliens as he was in the Showa continuity. The Xilians, being allies of the Nebulans, did assist in the creation and could request his assistance.
** The Seatopians, if they exist in this continuity, had nothing to do with Megalon.
* UnwittingInstigatorOfDoom: Sonata Dusk attempted to use her powers on Monster X to force him to stop attacking.[[spoiler: Come several chapters later, we find out the traumatic flashbacks he got due to her MindControlMusic woke up the Kaizer Ghidorah personality; making him go on a rampage.]]
* UnwittingPawn: [[spoiler: Zephyrus manipulates Sci-Twi and Wallflower into working for him by claiming to be a hero defending their world from evil]].
* UpbringingMakesTheHero:
** Princess Celestia and Luna were raised by Starswirl the Bearded and the founders of Equestria. While Luna did still suffer the Nightmare Moon episode and Celestia did spend time disillusioned with protecting the ponies, they both did still up as very kind hearted and noble despite their enormous power.
** The grown up Godzilla Junior. While we knew he was a GentleGiant towards humans, unlike his predecessor; we do see the full implications of the love and care he [[Film/GodzillaVsMechagodzillaII received]] under [[MuggleFosterParents Azusa Gojo]] as a baby now that he's all grown up. It turned him into his world's BigGood instead of its next big EldritchAbomination despite being one of the more powerful kaiju of all time.
*** The spin off, ''Sound of Thunder'', shows exactly what happens when this ''isn't'' the case: Junior's MirrorUniverse self instead got Mirror Azusa, who was [[AbusiveParents a cruel witch to him]] and he knows that birth mother abandoned his egg; effectively giving him no parental figures. The result is him being his world's BigBad and an utter psychopath with no regard for life in any form.
** [[spoiler: Sci-Twi, like pony Twilight, has good intentions. But unlike Pony Twilight, she hasn't had the right support network to help her grow as a person. Sci-Twi shows how "good intentions" don't matter when you are not given the proper guidance to measure the impact of your decisions. Since she has a sadistic winter spirit, rather than a benevolent pony princess, as her mentor, she doesn't become a hero but a threat to public safety]].
* UriahGambit: [[spoiler:Xenilla eventually confides to Blade Dancer that in the invasion of Solgell Island all the way back in the first chapter, he had actually been leading the Mutations to their deaths. Had Dimension Tide not interfered, the battle would have continued until all the Mutations were dead except for himself and Destroyah.]]
* VillainOfAnotherStory: Queen Beryl is this, being the BigBad for Chibi's mother and company and an AncientEvil similar to the ones faced by the Bearers and Princesses, but as she's based in Neighpon, she is detached from the main story.
* VillainProtagonist: The Halloween, Winter Holiday, and half the Valentines Specials followed Gigan, Megalon, Monster X, and Irys. Monster X would go on to lead his own story arc opposite Aria Blaze, detailing his forgotten [[FallenHero history]] and current [[EvilVsEvil conflict]] against Enjin. Although the "villain" part becomes increasingly downplayed, as both the Dark Hunters and the Sirens show growing moments of kindness, love, and camraderie. Aria and her fellow sirens abandon all desires for conquest, especially when [[spoiler: Aria discovers love magic]]. [[spoiler: While both groups do go after Princess Twilight, they did it under the mistaken impression she had stolen Sonata's gem. Once her innoncence is proven, they willingly work with Princess Twilight to find Sonata's gem, albeit while keeping her captive to prevent retaliation from her friends]].
* VillainWorld: The BigBad and his underlings spend a majority of their time in a realm called Zenith. Originally a FireAndBrimstoneHell under [[VillainOfAnotherStory RED]], when [[spoiler: Bagan]] took over it became a [[EvilIsDeathlyCold cold]], dark realm with a single structure (a massive dark temple) and endless miles of featureless obsidian.
* VillainousBSOD: The Hyper Gyaos after [[spoiler: she's forced to kill the rest of her blood-crazed flock in self-defense, leaving her the only one left. And since she's sterile, she can't asexually reproduce like the others, leaving her ''literally'' the only one left.]]
* VillainousFriendship: Monster X, Gigan, and Megalon do genuinely get along without any backstabbing and are loyal to each other. Later on, the Albino Hyper Gyaos [[note]]later named Irys[[/note]] joins the team and eventually bonds well with them enough she considers them her new "flock" after the loss of her old one.
* VillainsOutShopping: Literally. Aria and Sonata were going about in a mall when Monster X ambushed them.
* VillainousRescue:
** A flashback reveals that during the Final Wars, Xenilla saved Godzilla's life from a KillSat, and then destroyed part of the invading fleet, because [[TheOnlyOneAllowedToDefeatYou he views Terra as his to rule]].
*** [[spoiler: Or rather, protecting the life of the only thing he cared about. [[GoodAllAlong His]] [[BigBrotherInstinct family]].]]
** [[spoiler:Kaizer Ghidorah nearly murders Aria Blaze until he gets blindsided by Enjin, sent by Bagan to kill him and take his power.]]
** Monster X saves the sirens from Enjin during the hospital attack, citing that their gems would be useless to him if they died.
*** The sirens later repay the favor by ramming Enjin with their van to save Monster X after the battle went in Enjin's favor and X was knocked out cold.
* VitriolicBestBuds: Xenilla and Princess Cadance eventually become this after [[spoiler:saving each other's life and Xenilla earnestly becoming the protector of the Crystal Empire and the royal family after Cadance and Shining Armor offered him redemption.]] Cadance takes Xenilla's very active role in ensuring the well-being of the pregnant Cadance and Shining Armor's unborn child as both flattering and irksome. Xenilla constantly calling her "Empress" and her correcting him she's a "Princess" sounds like one part sniping and one part InsultOfEndearment.
* WeHaveBecomeComplacent:
** Princess Celestia worries that because she worked for about 1000 years to keep Equestria free from largescale war and crime, it is unprepared for the present threats, forcing them to rely on the displaced Kaiju to help them. However Godzilla is keen to commend her on the peace she'd help create, and that such is never to be looked down upon.
** According to Grand King Ghidorah, a long period of peace was what left the Xilian homeworld vulnerable to his first attack on it.
* WhamEpisode:
** Chapter 20: It's revealed that the mysterious entity directing the enemy Kaiju is [[spoiler: Bagan]], at the same time we find out that [[spoiler: the Tree of Harmony is actually sentient and has been subtly helping Equestria and the heroic Kaiju.]]
** Chapter 29: [[spoiler: [[BigBad Bagan]] tracks down and invades [[BigGood Harmony's]] realm and while he fails to kill her, he damages her, the Tree of Harmony, and the Elements of Harmony sufficiently that she's left totally cut off from Equestria, unable to even operate from behind the scenes like before until they can self repair. At the same time Enjin successfully captures Aria, absorbing both her siren magic and a large portion of the Kaiser Energy that she's siphoned away from X to transform back into a kaiju. Monster X, the only one left in the EG realm strong enough to fight Enjin is knocked into and sinks to the bottom of a frozen lake.]]
** Chapter 31: Not only does Xenilla [[spoiler:have Godzilla Senior's memories, he also has the Mothra family line's memories, and he attacked Senior all those years ago due to misinterpreting them]]. Godzilla Junior finally learns [[spoiler:Xenilla truly loved him and sacrificed everything to make him strong enough to survive]]. Finally, we learn [[spoiler:Grogar taught several of the previous MLP villains like Sombra, Tirek, Chrysalis, and Discord magic, and he's a being on par with Bagan and Harmony. Chrysalis is offered a VillainTeamUp with Bagan's forces by Legion, which she accepts but secretly intends to exploit it as [[TheStarscream part of her own plan to restore Grogar to his full might.]]]]
** Chapter 34: [[spoiler:King Sombra is brought back to life again and begins conspiring with Chrysalis to release Grogar. Sunset Shimmer is possessed by Enjin and infiltrates Equestria.]]
** Chapter 39: [[spoiler: [[ManipulativeBastard Grand King Ghidorah]] kicks off his plan. First he goads Monster X into fighting him, and after a short fight, breaks down Kaizer Ghidorah's cage, with the other hunters ForcedToWatch. Then [[BrainwashedAndCrazy Starlight Glimmer]] attacks Junior in Canterlot, not long after she took her sister's Cutie Mark. After luring him back to her village (with Rarity and Night Glider, a member of Starlight’s village who wasn’t in town when GKG kidnapped everyone else), Starlight shows that she’s taken [[WouldHurtAChild Chibi Moon]] hostage. Oh, and then [[FromBadToWorse freakin Nightmare]] [[GrandTheftMe takes over Junior during a moment of weakness.]] The result? Nightmare a.k.a Shin Godzilla.]]
** Chapter 41: [[spoiler:Irys discovers her true power as a Guardian Beast and is able to battle Kaizer Ghidorah to a standstill. Inside their mindscape, Monster X and Kaizer Ghidorah discover that Controller 011's soul was inside them all along. She reveals she actually committed suicide in an attempt to stop Kaizer's first rampage. Realizing his revenge is meaningless, Kaizer makes peace with X and they have a SplitPersonalityMerge. Controller 011 blesses X and Aria's relationship and he releases her to the afterlife. Rarity willingly becomes Nightmare Rarity again to battle the Enjin possessed Sunset Shimmer, and is in full control of herself. Rarity manages to exorcise Enjin from Sunset's body and then launch him towards Grand King Ghidorah, where he's vaporized by a BeamOWar Ghidorah is having with Godzilla Junior and Xenilla. Ghidorah's true motivation is revealed (only to the reader) to be that he's seeking to either become or find a being strong enough to kill Bagan. Junior and Xenilla, with help from [[BackupFromOtherworld their father's ghost]] manage to kill Ghidorah after a hard fought battle, but Ghidorah dies content believing they are strong enough to kill Bagan.]]
* WhamLine: In Chapter 35: Grand King Ghidorah [[spoiler:is having a conversation with [[BigBad Bagan]] and reveals something when Bagan notes he spared Megalon, Gigan, and Irys....]]
--> '''Grand King Ghidorah''': [[spoiler:“Because I know you about as well as you know me, Reijuu.”]]
* WhiteSheep: Now that we see Godzilla Junior all grown up, it's very clear he's become this. Compared to his adoptive [[TheDreaded grandfather]] and adoptive [[TrueNeutral father]], he's the first outright heroic Godzilla.
* WonderTwinPowers: Celestia and Luna's magical prowess is much stronger when they are near each other. They are still powerhouses when alone, but being anywhere near one another increases their power by magnitudes.
* WorfEffect: The BigBad establishes himself as the more dangerous or crafty of the villains by defeating long time fandom {{Big Bad}}s Grand King Ghidorah and Red.
* WrongContextMagic: As mentioned above (see MagicAIsMagicA), Terran and Equestrian magic work off different principles and can't be used to cancel out each other.
* XanatosGambit: The entirety of the "Enjin Arc" was this as set up by [[spoiler: Bagan, with the primary intent being luring in Harmony close enough to attack her realm directly. Enjin kills the sirens and Monster X/Kaizer Ghidorah and Bagan kills Harmony? Bagan just got a huge power source, removed a threat, and killed the only character who can stand on the same power level as him. Enjin succeeds but Bagan can't kill Harmony? Still get the power up and the damage to Harmony's realm from two PhysicalGod tier characters fighting it in with severe her connection to Equestria so she can't intervene. Both schemes fail? The damage is still done to Harmony's realm so she is out of the picture for a while and without any ties to link Enjin to his master, Monster X will still loyally serve Bagan.]]
* YearInsideHourOutside: Rodan spent about a day in the Shimmerverse, while a moment passed in main Equestria.
* YouAreInCommandNow: After the main kaiju were transported to Equestria, control of Godzilla's faction fell to Gamera, who's acting as "Regent" in light of the "King's" absence.
* YouDidntAsk: Xenilla [[spoiler: has been aware Princess Cadance was pregnant with her and Shining Armor's child a full eleven chapters before everypony else [[note]]because his ability to sense anyone touching crystals alerted him to two heartbeats during their fight with King Sombra[[/note]] He never said anything because he assumed they already knew and never had a reason to bring it up.]]
* YouAreNotAlone:
** Practically quoted by Princess Cadance during her BigDamnHeroes moment [[spoiler:to save Xenilla.]]
-->'''King Sombra''': "It ends here, the beast dies alone..."
-->'''Princess Cadance''': "He's not alone!" *fires a blast wave into Sombra*
** Later when Xenilla has gone into isolation due to trauma he experienced under Sombra's nightmare visions, Blade Dancer stubbornly refuses to be pushed away or scared off; knowing he's in pain.
** Rodan uses a metaphor of how stars are very far away from each other but look like they are next to each other to tell Phoenix Flamez that no matter how far she is from her friends and family, she is never alone.
* YouCanTalk: This was Xenilla's reaction when he first met Destroyah. At the time, no one knew she was sapient.
* [[YouCantGoHomeAgain You Can't Return To Your Realm]]: The situation with the first six kaiju that arrive. Dimension Tide brought them to Equestria and magic ''might'' be able to get them back, but for now they are stuck there. Mothra and Twilight are working on averting this.
* YouHaveOutlivedYourUsefulness: [[spoiler: After Bagan gets an example of the power Monster X has in his Kaizer Ghidorah form, he decides to kill him and take that power for himself.]]
* YourApprovalFillsMeWithShame: Adagio is ''crushed'' when she sees [[spoiler: a vision of her evil father praising her for helping him achieve his goals, and dreads she would make a good Wendigo]].
* YouShallNotPass:
** [[spoiler:Junior]] attempts this when it comes to [[spoiler:Grand King Ghidorah: going to fight him despite knowing it's likely a one way trip he can't win, so Chibi and the other civilians can escape. Thankfully, Xenilla has other ideas.]]
** [[spoiler:Destroyah]] later does this as well by [[spoiler:attacking the kaiju sized Giranbo in her pony form to hold her off long enough for the Crusaders to escape, knowing it's very likely if not certain Giranbo will kill her. The Crusaders and the spirits of Giranbo's victims manage to power her up to kaiju form, allowing her to survive.]]
* ZergRush: With the Albino Hyper Gyaos/Irys as the only exception, this is how the majority of Gyaos are able to threaten Godzilla Junior and Mothra Lea: both Defenders are able to kill a single Gyaos with little effort, but when their numbers are in the triple digits, they're a threat to even those two.
** Destroyah, remastering her ability to divide while keeping her consciousness constant throughout, divides into an army of aggregate and flying forms to overwhelm Giranbo.
[[/folder]]
----
%%[[caption-width-right:320:some caption text]]
->''Matter cannot be created nor destroyed, only moved, displaced, changed into energy; or morphed into a new state....All four just happened...''
In the heart of the Pacific Ocean, an all out invasion-turned gang-war occurred without warning between the two largest factions of the planet's kaiju population. As all hell is breaking loose on Solgell Island, the Global Defense Force see an opportunity to test a new superweapon, trying to rid the world of some of mankind's biggest threats while they are all clustered together. As the faction leaders unleashed their most devastating attacks, Dimension Tide fired and the combined energy seemed to erase some of the factions' power players off the map.
But, as the world cheered or bowed their heads in loss, none of them took a moment to realize Dimension Tide's blast, long believed to be an artificial black hole; behaved nothing like what theoretical physicists believed it should.
Six of the most powerful beings on the planet weren't crushed, imprisoned, or vaporized; they were moved.
Moved, changed, shrunk; but still very much alive. Equestria just got six new denizens just as a horror from the kaiju home realm sets its sights on Harmony's world.
----
The Bridge is a crossover fanfic written by [[http://www.fimfiction.net/user/Tarbtano Tarbtano]], illustrated by [[http://faith-wolff.deviantart.com/ Faith-Wolff]] (with some additional illustrations by [[http://pyrus-leonidas.deviantart.com/ Pyrus-Leonidas]]), contributed by [=Skylark8756=], and proofread by Faith-Wolff and Lance Omikron, combining ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', ''Franchise/{{Godzilla}}'', ''Film/{{Gamera}}'', ''Film/PacificRim'', ''Franchise/UltraSeries'', and a few other Kaiju franchises. Timeline-wise, it begins some time after the events of "[[Recap/MyLittlePonyFriendshipIsMagicS4E23InspirationManifestation Inspiration Manifestation]]". Other future sidestories show also incorporate elements of the ''Franchise/JurassicPark'', ''Film/{{Carnosaur}}'', and many Syfy Channel Original Movies (Film/{{Dinocroc}} in particular) series in unrelated pieces taking place on Terra and ''Franchise/SailorMoon'' inspired events and expies in Equestria's Japan equivalent. The fanfic is currently in progress (latest chapter posted as of 6/8/2023), marked as incomplete currently with seventy chapters (51 normal chapters [[note]]some chapters are broken into multiple parts since they lead directly into each other[[/note]], 18 bonus chapters, and two One-shots) and one Q&A section published.
Readable [[http://www.fimfiction.net/story/121836/the-bridge-a-godzilla-mlp-crossover here]], though the story is still on-going and not yet complete. Tarbtano also has a [[https://www.youtube.com/user/Tarbtano YouTube account]] that he uses to release trailers, promos, and such.
Original cover art [[https://static.tvtropes.org/pmwiki/pub/images/4a194077d7dde83e04c2098d42dfdfa7.png here]]. Secondary cover art [[http://i1105.photobucket.com/albums/h352/tarbtano/lineuplightuplightsup_zpsbf75710f.png here]]
The Bridge also contains ''many'' different sidestories, spinoffs, and bits of supplementary info. A reading list that suggests what order to view them in relation to the main fic can be found [[https://docs.google.com/document/d/1GVqMklzy9mIKS057nsZje3dOgWOQ-HS6i8c1SByluzA/edit# here.]] Be aware that even the core story alone is ''huge''. As of 2020, it is the single largest piece of Godzilla franchise literature known.
In addition to its canon side material, The Bridge has also generated a wealth of RecursiveFanfiction. A list of links to and summaries of both the canon sidestories and recursive fics can be found [[Fanfic/TheBridgeSidestories here.]]
This fic's universe is one of the many alternate universes visited by the protagonists of ''Fanfic/EquestriaAcrossTheMultiverse'', with the twist that it is the ponies traveling to Godzilla's world and transforming into Kaiju. In later chapters, the alternate versions of the Kaiju become allies of the Jaunters and occasionally travel with them to other universes to help them.
!! This FanFic provides examples of:
[[foldercontrol]]
[[folder:Tropes A - M]]
* HundredPercentAdorationRating: Princess Celestia, as per canon and role as the Equestrian BigGood. Princess Luna and Cadance aren't far behind.
* AccidentalKiss: In a flashback, this happened between the human Rainbow Dash and Flash Sentry when she slipped and crashed into him.
* ActionGirl: Any of the female kaiju [[note]]Destroyah, Irys, Lea, Biollante, Titanosaurus, Tytanna, Megaguirus, Raiga, and Otachi[[/note]], Rainbow Dash, any of the female royal guards, and the alicorn princesses. By default all of the [[Franchise/SailorMoon Senshi guardians]] are this.
** Aria Blaze becomes one after TrainingFromHell and a new power made her [[TookALevelInBadass take several levels in badass, making her way stronger than before]].
* AdaptationalBadass:
** While [[spoiler:Bagan]] is certainly powerful in the unmade films he would have been in, his power in his last attempted canon introduction put him roughly on par with Destroyah and Burning Godzilla. Here, he is undoubtedly the strongest kaiju of all time.
** Many of the ''My Little Pony'' characters, particularly the alicorn princesses, got a similar treatment. While certainly powerful in her own right, Princess Cadance is able to go hoof to hoof against King Sombra in an upfront fight whereas in canon we've never seen her in a full on battle.
** Numerous kaiju not in the top tier are stronger than they were in their more recent films, most notably Gigan, Irys/Hyper Gyaos, Anguirus; and Rodan.
** [[Film/PacificRim The Jaegers]] are also this, despite the Anteverse Kaiju being far outclassed. Due to Earth being much better at making mecha and various reverse engineered alien tech, they're a bit tougher than they were in canon. According to WordOfGod have fusion reactors instead of fission reactors and have Space Titanium in their construction among other things. The biggest bonus, however, is they're much more practical to make than their canon counterparts due to this.
** [[spoiler:Grogar in canon was very powerful and a HeroKiller as is, but in the Bridge? He's the ''nexus of dark magic itself'' and in the [[PhysicalGod same tier as Bagan and Harmony]].]]
** [[Film/Godzilla2000 Io Shinoda]] is a psychic and Mysterian hybrid in this universe. Even as a little girl she could perform feats like mentally influencing someone to not see her to effectively grant her active camoflauge.
** [[Franchise/SailorMoon Queen Beryl]] was already a BigBad in her home series. Here she has all of her innate magical abilities but also enhanced speed, strength, and durability to make her a physical threat.
** All of the Guardian Beasts, including the aforementioned Rodan and Anguirus, get buffed up as well. In addition to their canonical powers, each of them now have elemental powers of some sort on top of [[SuperMode their Guardian Mode]].
* AdaptationExpansion: Both sides get a good helping of this.
** MLP: The origins and early years of Princess Celestia and Luna get more allusions and flashbacks then they have in canon. Additionally, we get more of an insight into the group dynamics for the siren trio and how their powers work. Additionally origins and expanded roles are given to characters such as the windigos, sirens, and Gaea Everfree.
** Kaiju: ''Everyone'' due to the extended continuity and timeline, as well as speaking in dialogue we can actually understand now. What sort of morality Godzilla Junior grew up to have, the line of succession for the Mothra, getting to see Destroyah when she's not in AxCrazy mode; etc. Monster X especially get this, due to his DiabolusExNihilo status in his movie giving us no insight into his backstory, personality, or dynamic between his forms, and making him a more fully fleshed character as a result.
* AdaptationNameChange: The Elias from the Rebirth of Mothra series and Cosmos from the Heisei Godzilla films are renamed to the more commonly used name for the guardian moth's fairies, the Shobijin.
* AdaptationalHeroism: Due to AlternateCharacterInterpretation on the author's part, numerous villainous kaiju were given more heroic/redeemable traits.
** When Xenilla a.k.a Spacegodzilla was shown to be in the story, many readers instantly assumed he was the BigBad given the myriad of fan works putting him as such. As such his portrayal in ''The Bridge'' as an AntiHero at best and AmbiguouslyEvil at worst was a tad surprising. [[spoiler: Also, see GoodAllAlong.]]
** Destoroyah's AxCrazy attitude has been tempered a bit due to a crystal formula courtesy of Xenilla and the Cutie Mark Crusaders starting to become her MoralityPet. [[spoiler:She eventually becomes flat out heroic.]]
** Gigan whose movie counterpart is frequently portrayed in fan works as AxCrazy as well as a DirtyCoward; but is portrayed in this story as a PunchClockVillain who fights for whoever keeps his body maintained. Also, see VillainousFriendship.
** Monster X whose [[Film/GodzillaFinalWars movie counterpart]] often gets a similar treatment and is thought of as sadistic as the original King Ghidorah. The Bridge version however is shown more as a PunchClockVillain who only fights because he does not remember having any other purpose. Also, see VillainousFriendship and VillainProtagonist. [[spoiler: [[AvertedTrope Averted]] with Kaizer Ghidorah who serves as X's SuperpoweredEvilSide.]]
** On the ponies' side, Prince Blueblood is a little haughty, but a ReasonableAuthorityFigure. His PrinceCharmless behavior in "The Best Night Ever" is explained as a jerk impersonating him. Does explain why Rarity seemed to like him again in [[Recap/MyLittlePonyFriendshipIsMagicS2E9SweetAndElite "Sweet and Elite"]] if we're to believe that was the real one.
** Gradually, the Sirens go from being selfish sea witches to developing a greater sense of camraderie and friendship over the course of the Enjin Arc, and they cease their desire to conquer the world. [[DownplayedTrope However, they still retain small amounts of their viciousness, haughtiness, and paranoia]]. [[spoiler: Their response to Sonata's heart being stolen was to go apeshit on Princess Twilight and the Rainbooms, whom they believe to be responsible, and later for Aria to beat Sci-Twi within an inch of her life]].
** The ''Spinosaurus'' from ''Film/JurassicParkIII'' was specifically created by Dr. Wu to keep Isla Sorna's carnivore population in check, and in general is not as bloodthirsty nor hostile towards humans as its film counterpart, just a neutral creature that hates intruders who cause a mess.
** [[Film/TheLostWorldJurassicPark Peter Ludlow]] never swindles [=InGen=] from his uncle, John Hammond, to become CEO. Due to the events of ''The Lost World'' occurring differently, he never goes to Isla Sorna, leading to the events of his demise. Instead he works with his uncle; becoming the chosen heir while playing a role in condemning [=BioSyn=] for their crimes. It's implied he later works with Simon Masrani to create Jurassic World.
** Gloriosa Daisy doesn't go crazy with power like in Legend of Everfree. This is justified since, thanks to the Dazzlings, she has managed to get business for Camp Everfree and is able to pay off most of her debts. Her friendliness in the story is genuine and not to cover for her growing stress.
* AdaptationalSexuality: Considering she gets flustered by both men and women, Gloriosa Daisy is bisexual.
* AdaptationalSpeciesChange:
** Baragon was a dinosaur in the films, but in The Bridge, he's been changed into a therapsid due to his mammalian features such as external ears. [[note]]All the ''Guardian Beasts'', Anguirus, Rodan, Raiga, Baragon, Yonggary, Varan, and Gamera, are chimeras of multiple species with a single species as a base.[[/note]]
** The Mysterians are changed from a unique alien race fleeing a nuclear war ravaged planet to Xilian refugees who left their homeworld centuries ago to run from Grand King Ghidorah.
** The Mutants in ''Final Wars'' are the result of a gene implanted in humanity by the Xilians. In The Bridge, they're the result of ''Film/TheMysterians'' being allowed to incorporate into Earth's society and interbreeding with humans, producing Xilian [[note]]In this continuity, Mysterians are a subtype of Xilians who fled their planet centuries ago[[/note]]- Human hybrids. Miki Saegusa and Io Shinoda are also changed from being pure human to {{Half Human Hybrid}}s resulting from the same interbreeding, along with all the other psychics from the ''Heisei series''. [[Film/{{Carnosaur}} Dr. Jane Tiptree]] is revealed to be another hybrid, one of the first born from the aforementioned unions.
** In one "Tales of the Amalgam'verse" showcasing ''Franchise/JurassicPark'' in this continuity, the ''Velociraptors'' have been re-identified as ''Deinonychus'' since that is the genus the movie's raptors were more based on. A follow-up timeline which added in events of the first two {{Film/Carnosaur}} films and the novel similarly changed the ''Velociraptors'' from the second movie to ''Deinonychus''. Additionally the Tyrannosaurid that rampaged down [[Film/TheLostWorldJurassicPark San Diego in 1997]] was changed to a ''Tyrannosaurus bataar'' [[note]]also known as ''Tarbosaurus bataar''[[/note]]- ''Tyrannosaurus rex'' hybrid as the offspring of the two species present in the ''Carnosaur'' novel.
** Film/{{Dinocroc}} is revealed to exist and have Suchomimus in its genetic structure, a sign of illegal dinosaur cloning.
* AdaptationOriginConnection: Multiple!
** Baragon, Anguirus, Rodan, Raiga, Yonggary, Varan, and Gamera are all Guardian Beasts created by the BenevolentPrecursors to FlingALightIntoTheFuture [[spoiler:and stop Bagan when he eventually escaped his prison]] in this continuity, whereas in canon only Gamera was that.
** Megalon and Gigan are both Nebulan cyborgs, whereas originally their only connection was their masters being allies.
** [[https://www.fimfiction.net/blog/764364/tales-of-the-amalgamverse-monster-x-vs-ultraman-belial-2-angels-and-demons Tales of the Amalgam'verse: Angels and Demons]] ties Gigan's creation to the Ultraman franchise, being engineered in response to the Ultra and by reverse engineering the teleporter and unique alloys found in Ultraman Belial's Giga Nizer Staff; even having his informal name derived from it [[note]]'''Giga N'''izer -> "Giga N." -> Gigan[[/note]]. Subverted however as while he uses the Final Wars design, his creators and masters are not the Xilians but the M Nebulans as per the Showa continuity; though the Xilians did assist in creating him.
** Flash Sentry is a childhood friend of Moonbeam and Starlight Glimmer and Fancy Pants is sort of a father figure to the sisters, as Flash's father Stalwart Sentry and Fancy Pants once rescued the Glimmer siblings as children.
** Grogar was revealed to be the creator of the Windigos, [[spoiler:and the Windigos conceived the Sirens via raping the mermare princesses, making the sirens windigo-mermare hybrids.]]
** [=G-Force=] from the [=1990s=] Godzilla films is the direct predecessor to the Global Defense Force and its subdivisions like the [[Film/PacificRim Pan Pacific Defense Corps]] and [[Franchise/MonsterVerse Monarch]], being rebranded and refocused by Commander Aso after he cited Godzilla Junior was not their enemy and they had other things to worry about.
** [=M.O.G.U.E.R.A.=] in the films was the first of its kind. In the Amalgam Universe because the Mysterians arrived in the [=1950s=] with their Moguera mecha, which was a repusposed Xilian mining machine. It was damaged beyond repair but some of its technology went on to the superweapons later made by [=G-Force=]. The [=1990s=] machine was modeled off it as many Mysterians and Mysterian hybrids worked in [=G-Force=].
** Due to the title of Gaea Everfree being a LegacyCharacter, Wysteria Daisy is now tied to Sunset Shimmer [[spoiler:as the first bearer of the Element of Empathy.]]
** Giranbo is reimagined as an ancient enemy of Mothra. [[spoiler:She's also heavily implied to have been the one who gave ponies the idea Nightmare Moon was a ChildEater.]]
** Belvera from the Rebirth of Mothra series is incorperated to the events of the Heisei Godzilla saga as Battra's faerie assistant and older sister to Mothra's twin faeries. The Cosmos from the 1990s Godzilla and Mothra movie are also retconned into being Moll and Lora from the Rebirth trilogy.
** Grand King Ghidorah is tied to every other "Ghidorah" in canon. [=DesGhidorah=] was his younger brother and [=Monster X/Kaizer Ghidorah=] were created from his blood through an experiment. The Futurian's artificial King Ghidorah, created from mutant Dorats, was engineered from Grand King Ghidorah's historical data.
** Harmony created the Crystal Heart, Elements of Harmony, the Equestria Girls World's Elements of Harmony, the [[Anime/SailorMoon Silver Crystal]], [[spoiler:and Celestia and Luna]]. Meaning almost all heroes and heroines in Equestria's multiverse that use some powerful relic of benign magic can be tied back to her.
* ADayInTheLimelight:
** ''"Sound of Thunder"'' largely acts as this for Raiga. Being a non-Toho kaiju from a well made, but still small time film; she was virtually unknown by the fandom. Multiple readers at first mistook her for an original character.
** ''"Omake: Gojira tai Chibi-Tsuki - Furīkī Furaidē "'' is one for Chibi Moon and the Sailor Moon {{Expy}} cast.
** ''The Gumiho arc'' is one for Ki Seong, Applejack, along with Anguirus. While the three have all appeared previously, this focus arc pit the farmpony, kaiju, and tea shop kirin up against a nightmarish fox demon that had followed Seong to Equestria from her homeland and menaced Ponyville.
* AfterlifeWelcome: Subverted. [[spoiler:If they were dead already themselves, the deceased parents and family members journey down from the afterlife to welcome and reunite with the children who's souls have been trapped inside Giranbo's graveyard.]]
* AnAesop:
** Chapter 40, "Hero" is about forgiveness and atoning for one's misdeeds.
** The Ghidorah Arc in general and especially in the finale are about remembering but moving on from the past when bad things happen.
** The 2018-2019 holiday special, ''"Legacy of the Everfree"'' is about being able to empathize with others.
* AffectionateNickname: Mothra Lea and Godzilla Junior are old friends, resulting in them calling each other ''Goji'' and ''Lele'' respectively. Alicorn sisters Princess Celestia and Princess Luna also get playfully called "Celly" and "Lulu" by the other.
* AllPartOfTheShow: In the human world, Photo Finish witnessed the battle against Enjin in the hospital, but she assumed a movie was being filmed.
* AllJustADream: [[spoiler:The events of Junior and Zilla Jr. fighting Godzilla Earth alongside Legendary Godzilla and Showa Godzilla seem to be this when Zilla Jr. wakes up with Junior's telepathy explaining the shared dream...but then [[OrWasItADream both Junior reveals both have healing scars from where they died in the fight]]. While exactly ''what'' happened is unclear, it was no ordinary dream.]]
* AllYourBaseAreBelongToUs:
** The gyaos flock attacking Canterlot.
** [[spoiler: Bagan setting a trap to attack the BigGood, Harmony, directly and invading the ascension realm inside the Tree of Harmony. He's unable to defeat her, though does succeed in cutting her off from Equestria for a time.]]
* AlternateContinuity:
** The author combined several different continuities to create the universe that the kaiju in this story hail from, which he's dubbed the ''Amalgam Universe''. It uses the Heisei Godzilla series as the base, but neatly ties in the Rebirth of Mothra trilogy, Pacific Rim, most of the Millennium age Godzilla series, the Legendary Pictures reboot, the Heisei Gamera series; and numerous single-movie kaiju names both from Toho and other companies. There's plenty of continuity mixing between franchises as well, with some changes that still make a lot of sense (for instance, Gamera is retooled into a Guardian Monster from ''Film/GodzillaMothraKingGhidorahGiantMonstersAllOutAttack'', replacing Mothra, who already existed). The full timeline is viewable [[http://www.fimfiction.net/blog/345509/the-bridge-kaiju-amalgam-universe-timeline here]].
** On the MLP side, the story takes place during the show's run with the kaiju entering Equestria midway through Season 4. It also incorporates much of the IDW comics and illustrated books than the later seasons of the show do. Additionally, some characters from other generations like Generation 3's Rainbow Dash, mother of the Generation 4 one, [[spoiler: and G1's Grogar]] show up. There are also bits and pieces of other series like a version of {{Franchise/SailorMoon}} being incorporated.
* AlwaysABiggerFish:
** Garble and his gang of teenage dragon bullies terrorize a pony camp until they are interrupted by the larger and more powerful Anguirus.
** The Anteverse kaiju ended up running into this, as they had not only the Jaegers to deal with but Kiryu, other reconstructed UN robots, and the heroic kaiju as well. Trespasser ended up ticking Junior off and got ''[[CurbStompBattle destroyed]]''. [[spoiler:Multavore had the misfortune of being killed ''the moment she entered the universe'', resulting in Junior wrecking the Precursor's production facility on the other side.]]
* AmbiguousEnding:
** The end of the ''"Rise and Fall of C.C.I"'' blog covers the events of the Amalgam Universe's version of ''Film/Godzilla2000''. In it the end, Mitsuo Katagiri and Godzilla Junior come face to face again for the first time in years. Katagiri had tortured Junior in his toddler days with a shock collar and it's clear the now adult Godzilla remembers him. Junior walks up to the building Katagiri was standing on and they stare each other down for a time with Katagiri calmly speculating how Godzilla will take his revenge. However Godzilla turns and walks off, but his tails brushes up against the building and Katagiri falls to his death. Whether or not Junior intentionally caused the fall, if he was just weary from the fight with Orga and it was an accident, or if Katagiri jumped by his own volition is left unanswered.
** The ending of the 2018 Halloween special. WordOfGod confirmed [[spoiler:The Leviathan killed Godzilla Earth and Ghidorah, however it was never clarified if it headed Haruo's prayers and pleas to save the Aratrum before engaging the other kaiju. It's also left ambiguous exactly ''what'' happened, as it ends with Junior and Zilla Jr. waking up alive and not fused into Leviathan, but still bearing wounds from how they died against Godzilla Earth.]]
* AmbiguousSituation: After the two settle their differences and find they work together beautifully as a flight team, are Rodan and Rainbow Dash in a relationship or not? Rainbow has Rodan shack up in her house, both know the others needs quite well with, they get along great, the specials even show they share a bed and shower together. Rainbow seems to get "territorial" around him when Lightning Dust or Gilda tried to lure him to their team but that could just be because she knows them and is defending a clueless friend. Yet, they seem adamant they're just besties and wingmates and deny any romantic notions. Are they trying to hide it, are they roommates that are genuinely clueless to how they come off, or is there nothing going on?
* AnArmAndALeg: Twice.
** Hyper Gyaos used her beam to slice off Gaira's hand when he tried to ambush her. He does regenerate it though.
** Gigan loses both arms [[spoiler: in his last stand against Kaizer Ghidorah. He later has to get emergency repairs for it among other damages.]]
* AncestralWeapon: Downplayed example. Ardent Sentry's weapon, the Hurricane Lance, [[spoiler:which originally belonged to her father, Commander Hurricane]], has been passed down through generations of the Sentry family when members of the family became Captains of the Guard like Ardent was; making it a de-facto heirloom. Though the weapon is ordinary, it is very durable and has been maintained through the years, and is famous for never being used against an innocent. Though the weapon is for the Captain of the Guard, not just specifically the Sentry line, so not every bearer was a Sentry; just often trained by or trained one like Captain Blueberry Frost being Captain Stalwart Sentry's student.
* AncientEvil: Most of the villains are either extremely long-lived or have been sealed away for very long periods of time.
** Kaizer Ghidorah is almost 400 years old.
** Queen Chrysalis, Lord Tirek, King Sombra, Discord, and [[Franchise/SailorMoon Queen Beryl]] are all roughly 1000 years old.
** Grand King Ghidorah and [=DesGhidorah=] are least 65 million old given the were partially responsible for the non-avian dinosaurs going extinct.
** [[spoiler:Grogar and Bagan are both billions of years old.]]
** The Four Windigos, Notus, Boreas, Eurus, and Zephyrus, are all multiple thousands of years old.
* AndShowItToYou: One of Gigan's earliest memories after getting mauled by Kaizer Ghidorah is waking up on the operating table and seeing his own heart being replaced.
* AngelsDevilsAndSquid: [[spoiler:The Nexuses of Dark Magic fit this. Harmony is beautiful, angelic entity and GodOfGood, Grogar is a malignant demonic beast in the shape of a ram and GodOfEvil, Bagan is the most alien-looking of the three and also a GodOfEvil. All three are equals in rank and power, though Bagan is from a separate universe.]]
* AntiMagic: Siren and mermare song magic's effectiveness on kaiju is shoddy at best.
** Monster X has a PTSD-like flashback when Sonata tried to control him with the original [[ThePowerOfHate hate-powered]] song. [[spoiler: Aria's PowerOfLove magic works much better.]]
** Flash mob of mermares tries to sing songs meant to communicate their... risque desires. Result? [[spoiler: All Godzilla Junior can hear is [[MythologyGag "Shooby doo"]]]]
* ApocalypseMaiden: [[spoiler:It turns out the Alicorns are this in a sense: [[GodOfEvil Grogar]] was imprisoned by [[GodOfGood Harmony]] and while she naturally is not going to willingly release him, Alicorn Magic will work just as well to break his seal and other than Harmony seems to be the only thing that can.]]
* AprilFoolsDay: The "March 32nd" special involving a dimension hopping Sonata Dusk, Megalon, and Pinkie Pie as instructed by Discord. The SillinessSwitch is cranked up to eleven.
* ApologeticAttacker: Monster X to [[spoiler: Kaizer Ghidorah when they have a BattleInTheCenterOfTheMind after Kaizer tried to seize control of their body. With Aria Blaze's help, X is able to force him back into a mental prison. But after seeing glimpses of Kaizer's memories and the life he was trying to avenge, X whispers "I'm sorry." before Kaizer is sealed away, for awhile...]]
* ArcWords: "At their core, all decisions are based on two conflicting forces, love and hatred."
* ArmorIsUseless: Completely averted. Where the armor various Equestrian characters are wearing saves them from being injured far more than if they weren't wearing it. It may not be enough to negate the attack entirely, but it does work.
** The aversion is evoked in Princess Cadance's actions, where she takes a moment before jumping into the fray to put on some plate mail.
** Monster X's bone armor and helmet saved him from multiple would-be killing blows from the more physically powerful Enjin.
* ArcVillain: While the story has a central BigBad, each story arc has a defined villain after the status quo is established.
** Everfree and Canterlot Attacks: Gyaos Horde, specifically the Albino Hyper Gyaos in the Everfree attack and the Alpha Super Gyaos standing in for her in the Canterlot attack.
** Crystal Empire Arc: King Sombra
** Human World Arc: Enjin
** The Jeog, Ki Seong's ArchEnemy, becomes one upon arriving in Ponyville.
** Grand King Ghidorah for his [[AntagonistTitle self titled arc.]]
** Queen Beryl for ''"Gojira tai Chibi-Tsuki - Furīkī Furaidē"'' omakes.
* ArtShift: The illustrations taking place back in the kaiju's home dimension tend to be more detailed with black used for the outlines, to make the setting a little more realistic. For ones taking place in any of the Equestriam realms however, the detail is relaxed and colored outlines are used to fit the show's art style.
* [[ArtificialHuman Artificial Equestrian]]: [[spoiler: It's heavily implied Princess Celestia and Princess Luna were created by the Tree of Harmony, because they were found as foals in front of it with no parents.]]
* AssimilationBackfire: Nightmare really bit off more than she could chew when she tried to corrupt and take over [[spoiler: Godzilla Junior's mind.]]
* AsskickingLeadsToLeadership: How the Mutations work, strongest one leads. Xenilla is their leader simply because he's too powerful for any of them to challenge 1-on-1 and potentially win. Destroyah's the only member that could potentially beat him and she's loyal to him. Best shown by what happens the moment he and Destroyah are presumed dead after being hit with Dimension Tide's black hole: the rest of the faction instantly begin plotting to take over the fraction for themselves now that the two top dogs are both gone.
* AttackBackfire: Destroyah has a division ability that, when in full kaiju form, allows her to go from a single 120 meter tall monster to a dozen or so smaller monsters and swarm. When she tries to do this in her pegasus body, it results in her turning into a bunch of toddlers.
* AttackItsWeakPoint: Grand King Ghidorah is durable enough that nothing Irys, Megalon, Gigan can throw at him does more than knock a few scales off. They only manage to damage him after Irys cleaves off a line of scales as Megalon distracts Ghidorah, giving Gigan enough time to build enough momentum to hit the bare patch Irys cleared; cutting in deep enough to actually hurt Ghidorah.
* AttackOfThe50FootWhatever: Since this is a crossover with ''Godzilla'', this trope is most definitely a thing that happens.
** The first examples we get in Equestria feature both villainous and heroic versions (right after each other no less!). Garble and his gang experience greed growth and rapidly change into full size dragons. Cue an injured Rainbow Dash inadvertently causing Anguirus to revert to his true form to save the day.
* AudienceWhatAudience: Aria Blaze doesn't understand when Sonata Dusk breaks the fourth wall. Later, Gigan doesn't know what Megalon and Mane-iac are doing when they break the fourth wall. However, Gigan is briefly able to see the fourth wall and is horrified. Later, Rainbow Dash and Pinkie Pie don't know what Discord is doing when he breaks the fourth wall.
* AuraVision: An advanced alicorn spell to detect disguises. It's what shows Luna and Celestia what the Kaiju-Converts gathered really are. It also shows the magical potential or affiliation somepony has. The Mane 6 all have a brighter than average aura in the color of their respective Element of Harmony, Princess Cadance has a very bright, glimmering aura indicative of the Crystal Heart; and Celestia and Luna have blazing bright auras that contain sparks of their old Element ties.
* AuthorAppeal:
** The Sirens' loving description of the sea comes from the fact Tarbtano lived almost his entire life near the ocean, despite ironically being born in a desert.
** The scarf Monster X wears over his mouth in his human form is partly based on the fact Faith-Wolff likes Kakashi from ''Manga/{{Naruto}}''.
* BadassCreed: The Sentry family has: "A Sentry always does what's right. No matter what's happening, what we have planned, a Sentry always does what's right when they see the chance."
* BadassCrew: Irys, Gigan, and Megalon form one, managing to put up one hell of a fight against [[spoiler: '''Grand King Ghidorah''', actually managing to damage him. Later Monster X joining in during a rematch allows them to actually overpower him.]]
* BadassFamily:
** The Godzilla "Dynasty" is an unofficial example. The start was the original Godzilla now reborn as Kiryu being the grandfather, then his even more powerful son, Godzilla Senior. Senior then, by two cases of outside forces using his cells and then by adoption, "fathered" Biollante, Xenilla, and Godzilla Junior.
** The Sentry family line contains some of the most decorated and legendary stallions and mares in the history of Equestria's guards and law enforcement. Played straight with Stalwart Sentry, but subverted with his son Flash Sentry. Flash clearly has the heart for heroics, just not the opportunity yet.
** The Royal sister's family and family by choice. Princess Celestia and Luna are the most powerful of the ponies, and Celestia's honorary niece Cadance is no slouch either. Starswirl the Bearded served as the two's adoptive father and they were also raised by Equestria's original founders.
** Chibi Moon is quite a capable little filly, especially after she became Godzilla's pupil. Her mother and father as well as her godmothers all form [[{{Franchise/SailorMoon}} a certain team]] back in Neighpon.
* BadFuture: [[spoiler:A future version of Flurry Heart apparently comes from one where Bagan and Grogar are apparently both released and ruined the universes and killed several characters including her parents, though seemed to have been stopped from ''totally'' destroying them. Her goal is to [[SetRightWhatOnceWentWrong use her brief window to change the past to make things right.]]]]
* BallsOfSteel: Enjin is unaffected by Sonata's nutshot attempt.
* BattleInTheCenterOfTheMind: [[spoiler:Monster X gets into one with Kaizer Ghidorah for the right to control their body. With Aria Blaze's help, X wins.]]
* BattleInTheRain:
** The fic begins with one between Godzilla Junior and Xenilla.
** [[spoiler: Hyper Gyaos vs. the rest of her flock.]]
* BeamOWar:
** Godzilla and Xenilla were charging up for one when Dimension Tide hit.
** Mothra Lea and the then unnamed Irys get into one during their battle at the Castle of the Two Sisters, Lea's antenna beams vs Irys' sonic cutter. Due to them being too close, it ultimately explodes, blowing both back, though Irys took a good bit more of the explosion than Lea did.
** [[spoiler: In ''Sound of Thunder'', Raiga and Mirror Godzilla's battle climaxes with one of these with both characters using their respective ultimate attacks. The result is ultimately their combined attacks detonating but with Raiga managing to force the struggle in her favor far enough that Mirror Godzilla took the brunt of the blast]].
** [[spoiler:The ClimaxBoss fight against Grand King Ghidorah ends with the mortally wounded King Ghidorah unleashing a continent busting WaveMotionGun in an an attempt at TakingYouWithMe. Xenilla and Junior retaliate with a double Spiral Fire Ray, instigating one of these. [[BackupFromOtherworld The souls released from King Ghidorah and Harmony allow Godzilla Sr.'s soul to briefly return]] and add his Spiral Fire Ray to the mix, tipping the scales in their favor and destroying the King of Terror once and for all.]]
* BeautyIsNeverTarnished:
** Completely averted in Luna's fight with Godzilla. Over the course of the battle, the princess suffers a multitude of heavy and ''extremely'' [[http://faith-wolff.deviantart.com/art/Luna-v-Jr-Luna-s-Wounds-455356642 visible]] injuries. [[AfterCombatRecovery She recovered eventually,]] but is still in bandages for a few chapters. To be fair, she roughed up Junior [[http://faith-wolff.deviantart.com/art/Luna-v-Jr-Jr-s-Wounds-455355562 just as badly.]]
** Subverted with Blade Dancer, another Equestrian beauty, when she gets slashed across the face with a spear. It looks nasty at first, but Xenilla uses a healing crystal on her to mend the wound.
* BecauseYouWereNiceToMe: [[AmbiguouslyEvil Xenilla]] does make due on a promise Blade Dancer makes him swear on [[spoiler: to save Princess Cadance's life from King Sombra)]], after she frees him from his imprisonment. He even laments that it's the first time anyone has tried to do something directly for his benefit before. However, once freed, his way of showing gratitude is a tad unorthodox. [[spoiler: He throws her into his prison cell and locks it before leaving, rationalizing she'd be safe from the coming battle in there.]]
* BefriendingTheEnemy: Despite kidnapping her [[spoiler: Princess Twilight decides to befriend and work with the Sirens and the Dark Hunters. Justified since they only kidnapped her because they mistook her for Sonata's attacker and are only keeping her captive to deter retaliation from her kaiju allies. She does such a good job, that when the Sirens and Dark Hunters plan falls through, they let Princess Twilight take charge of them]].
* BehemothBattle: Considering half the roster have true forms over 80 meters tall, this is a given. Specific examples include-
** The opening fight, a full melee with almost every single member of the Terran Defender, Mutation, GDF, and Coalition factions slugging it out. Special focus on Godzilla Junior vs. Xenilla and Mothra, Anguirus, and Rodan vs. Destroyah. [[labelnote:Result]]Draw due to Dimension Tide hitting all six of them to unknowingly transport them to Equstria.[[/labelnote]]
** Anguirus with help from Rainbow Dash and Rodan vs. Gable's Greed Growth enhanced dragon gang [[labelnote:Result]]CurbStompBattle in the heroes' favor due to Anguirus knowing how to fight and being immune to dragon fire.[[/labelnote]]
** Mothra Lea with Twilight Sparkle and Spike vs. Albino Hyper Gyaos [[note]]later called Irys[[/note]], several Super Gyaos, and a few dozen Gyaos [[labelnote:Result]] With help from Twilight Sparkle and some quick thinking, Lea manages to critically injure the albino Hyper Gyaos and destroy the flock; but gets roughed up enough to put her out of commission.[[/labelnote]]
** Godzilla Junior with help from Princess Celestia and Luna vs. Several Hundred Super and normal Gyaos [[labelnote:Result]] Godzilla Junior just barely manages to kill all but a few of the gyaos and drives off the others before collapsing from exhaustion.[[/labelnote]]
** Irys, Gigan, and Megalon vs. Grand King Ghidorah [[labelnote:Result]] Grand King Ghidorah pummels the trio, though they do manage to get one good hit on him. He calls off the fight by granting Irys her wish but it's left ambiguous if this is due to his injury or boredom.[[/labelnote]]
** Pre-Amnesia Monster X vs. Grand King Ghidorah in the past [[labelnote:Result]]Monster X hangs in there for a time but he's hopelessly outclassed. This changes when he transforms into Kaizer Ghidorah, evening the odds. After a brutal fight where the two beat each other to near death, Kaizer Ghidorah tears one of Grand King's heads off.[[/labelnote]]
** Monster X with assistance from Aria Blaze vs. Enjin [[labelnote:Result]] Enjin begins to overpower Monster X, not helped by the Kaizer Ghidorah's personality attempting to hijack X's mind. A powered-up Aria launches an internal attack on Enjin and magically enhances X enough he can mentally overpower Kaizer. Monster X then tears out Enjin's core and frees Aria, disintegrating Enjin.[[/labelnote]]
** Grand King Ghidorah vs. Monster X then Monster X with Irys, Gigan, and Megalon [[labelnote:Result]]Stalemate victory for Grand King Ghidorah. While he would have lost, he achieved his goal of unleashing Kaizer Ghidorah and retreating.[[/labelnote]]
** Kaizer Ghidorah vs. Gigan, Irys, and Megalon and mentally Monster X [[labelnote:Result]] Dark Hunters narrowly win via forfeit as a Guardian Mode activated Irys stalemating a battered Kaizer Ghidorah and Monster X managing to get Kaizer Ghidorah to let go of his hatred. With no more reason to fight and accepting X was the better personality, Kaizer gives up.[[/labelnote]]
** Grand King Ghidorah vs. Godzilla Junior [[labelnote:Result]]Initial round was a solid victory for Grand King Ghidorah, but Junior got his HeroicSecondWind and activated his Burning form to keep fighting until Ghidorah dragged them both into the upper atmosphere.[[/labelnote]]
** Grand King Ghidorah vs. Burning Xenilla [[spoiler:And Godzilla Junior AND the spirit of Godzilla Senior]] [[labelnote:Result]]The Godzilla brothers with the help of their father's spirit manage to overpower and obliterate Grand King Ghidorah in a massive BeamOWar.[[/labelnote]]
** Destroyah vs Giranbo [[labelnote:Result]]Giranbo nearly comes close to winning, but with the help of the CMC and the ghosts of Giranbo's victims, Destroyah ultimately drags her underwater and dissolves her underwater Oxygen Destroyer style.[[/labelnote]]
* BenevolentBoss:
** Villainous example. The BigBad gets the loyalty of numerous evil kaiju not only by a show of force, but by offering and giving them exactly what they wanted most. Most pledged their service without hesitation. [[spoiler:However, it's ultimately a facade to keep their loyalty, Bagan is an OmnicidalManiac planning to destroy all life, including them, but needs their help regaining his full power before that.]]
** On the positive side, Godzilla junior is considered the [[TheGoodKing 'king']] of the terran kaiju, who follow him out of well-earned loyalty and respect. He and his highest ranking subordinates are genuine friends. Likewise Princess Luna and Celestia are well respected in Equestria and care greatly for their subject's well being.
* BenevolentPrecursors: The creators of the Guardian Beasts, who did so to [[spoiler:stop Bagan when he returns]], even though it'd be over one hundred thousand years in the future. Even moreso with the reveal that the Fae who were involved in this were essentially performing a HeroicSacrifice to do so.
* BequeathedPower:
** Enjin ensnares Aria Blaze with tentacles and starts pulling her towards his core for assimilation. Monster X grabs her and desperately tries to save her. Sensing that if this keeps up, he'll just get pulled in with her, she passes him her necklace, the source of her powers, then shoves him away, letting herself get absorbed. The power boost allows him to transform into his Kaiju form and defeat Enjin.
** Later, when Monster X starts losing his memories and getting possessed by Boreas, he somehow transfers his Kaizer Ghidorah personality to Aria's body, giving her a massive power boost.
* BewareTheNiceOnes: Xenilla comes to the conclusion, within a short time of arriving, that Equestria as a whole is this trope. He's not wrong.
* BilingualBonus: Several. Most notably the titles of several chapters ''Unbekannte Soldat'' (German for ''Unknown Soldier'') and ''Henkōten'' (Japanese for ''Changes'')
* BilingualDialogue: In ''Babysitter'', Godzilla Junior and Mariner "Chibi" Moon speak to each other in Japanese/Neighponese several times.
* BigBad:
** Many readers at first assumed Xenilla and Destroyah were the main villains of the story. Then when Red was introduced a lot of them thought he would be the main villain. [[spoiler: Turns out it's the being haunting Xenilla's nightmares and defeated Red before taking over Zenith. Eventually, it's revealed to be Bagan.]] However, [[spoiler:it seems that [[GodOfEvil Grogar]], the Shadow King, is being built up as another BigBad.]]
** ''A Sound of Thunder'' has [[spoiler:Mirror Godzilla]] as its big bad.
** Countess/Nightmare Mircalla serves as the main villain of ''A Shimmer in the Dark''.
** ''The Eclipse Times'' has Queen Chrysalis as the main antagonist, taking place during her first attack on Equestria a thousand years ago.
* BigBadEnsemble:
** [[spoiler:[[GodOfEvil Bagan and Grogar]] seem to be one, given Empress Flurry Heart contributes her BadFuture to ''both'' of them and they're implied to be on the same tier.]]
--> '''[[WordOfGod Tarbtano]]'''': [[spoiler:For a crossover this big, you thought I'd settle for one Big Bad?]]
** The three Windigos serve as the antagonists for the Winter War arc.
* BigBrotherInstinct:
** [[spoiler: Do not, under any circumstances threaten to kill Godzilla Junior in front of Xenilla.]]
** The Dazzlings have this for one another, and will stomp on anything that tries to harm them. [[spoiler: Aria beats Sci-Twi within an inch of her life for stealing Sonata's heart]].
* BigDamnHeroes:
** During the opening fight, Mothra and Anguirus do this for each other while fighting Destroyah.
** Anguirus transforming to save the campground from Garble and his dragons.
** Godzilla Junior transforming to fight off the gyaos horde converging on Canterlot.
** Xenilla tackling King Sombra out a window before he can stab Princess Cadance. She then armors up and flies into the fray to return the favor.
** Even more than a few AntiVillain characters get these. [[spoiler: Aria Blaze transforming into her SuperMode and unloading on Enjin to save human!Monster X. And then kaiju!Monster X bursting out of a lake to save Adagio Dazzle and Sonata Dusk from the similarly transformed Enjin.]]
** [[spoiler:Xenilla arriving in time to rescue Junior from falling to his death and back him up against Grand King Ghidorah.]]
** [[spoiler:The Mane Six, Princesses, and Kaiju Six all coming to save Junior and Xenilla from death as they're falling from the upper atmosphere after destroying Grand King Ghidorah.]]
* BigGood:
** As stated below (see TakeThat), Princess Celestia is not the 'Tyrantestia' seen in some other fanfics, especially at the time. Here she is a beloved [[TheHighQueen ruler]] who will [[RoyalsWhoActuallyDoSomething do whatever she can to protect her subjects]]. Helps she is more than strong enough to floor the kaiju-ponies with a magic burst when enraged. [[note]]The reason this is worthy of note is at the time Bridge first came out, giving Celestia the RonTheDeathEater treatment was ''extremely'' common in the MLP fandom and has only died down since.[[/note]]
*** Then there's the entity who brought King Caesar to Equestria long ago to fight Tirek, and has been providing advice and aid to both the ponies and some of the less evil kaiju since the story started. [[spoiler: It turns out to be Harmony, an avatar of the Tree of Harmony. At one point in the past, she also defeated [[GodOfEvil Grogar]] and sealed him away, as well as provided help to defeat his students. It's also implied she may have created Celestia and Luna.]]
** On the Terran side, Godzilla Junior and Mothra Lea both show shades of this amongst the Terran Defender kaiju; having been in the fight for their planet and its inhabitants the longest.
*** [[spoiler: Reijuu ''used'' to be this. Then it became known as [[FaceHeelTurn Bagan]].]]
* BittersweetEnding:
** ''"Sound of Thunder"'' has one. [[spoiler: Raiga and Mirror!Starlight Glimmer, along with some help from Mirror!Lightning Dust and Manehattan successfully fend off an assault from Mirror!Godzilla long enough for the city to evacuate. Mirror!Xenilla and Destroyah arrive to save them from Godzilla, but just before they can finish him off he is teleported to safety by Cadenza's crystal; meaning he'll be back.]]
** ''"Tales of the Amalgamverse: The Dark Queen"'' ends in Queen Beryl's plans being spoiled and the Senshi learning how to counter her new trick... But it comes at a cost of her beating all of them within an inch of their life and murdering their leader Golden Glow.
* BlackAndWhiteMorality / WhiteAndGreyMorality: While the core group of heroes and heroines from both sides are benevolent, the morality of the villains is all over the place. Some like [[BrokenBird Irys]] and [[NobleDemon Monster X]] have redeeming qualities, others like King Sombra and King Ghidorah are completely evil. [[spoiler:Then there's Bagan, who's an OmnicidalManiac, but convinced himself his actions aren't evil.]]
* BlasphemousBoast: Kaizer Ghidorah completely denies Grand King Ghidorah's [[AGodAmI claims to godhood]], while declaring himself the inversion.
-->'''Kaizer Ghidorah''': "You are no god, but I am the Devil."
* BlindingCameraFlash: Photo Finish subjects Irys to several.
* BlueAndOrangeMorality: Xenilla is a very tough nut to crack. He is completely honest, but can be brutally blunt with his words. He shows great dislike for both love and hatred, seeing them as controlling emotions; but at the same time he's far from stoic.
* BothSidesHaveAPoint: As shown by Godzilla Junior and Mothra Lea's fight against the gyaos hordes or Princess Cadance and Xenilla's fight with King Sombra, sometimes using lethal force ''is'' needed to stop a crisis situation and confronting an irredeemable evil. That said, as shown by [[spoiler: the change in characters like Xenilla, Destroyah, and Aria Blaze]], not all villains are pure evil; some can be forgiven and pull a HeelFaceTurn. Neither ThouShaltNotKill or SociopathicHero is the correct route in all situations.
* BreakingTheBonds:
** Godzilla Junior and Xenilla both humor their guards when they get arrested at different points in the story, then casually break their shackles.
** King Sombra shackles Princess Cadance with crystal constructs and boasts that even with her Alicorn strength, she won't be able to break free in time before he kills her. Xenilla arrives in time to tackle him away before he can stab her, then while the two are fighting, Cadance manages to break them.
** [[spoiler:Harmony wraps Bagan with a chain that becomes stronger the more evil the prisoner is. Bagan is able to break it, possibly because he considers himself AboveGoodAndEvil.]]
* BreakingTheFourthWall:
** Sonata Dusk is aware she's in a story, referencing the [[TeasingCreator author]] and the story reader's [[{{Shipping}} favorite activity]].
** During the Valentine Day's special, both Megalon and Mane-iac do this, pointing out that the dimension they're currently in is a comic book.
** When Discord shows up during the baby Destroyah outbreak, he uses a Kindle-Fire to check Tohokingdom and Website/ThisVeryWiki for information on what's happening.
** The non-canon" AprilFoolsDay special occurs when Megalon, Pinkie Pie, and Sonata Dusk all broke the fourth wall at the exact same time and end up beyond the barrier together. Discord is also there as the fourth wall's "moderator". [[spoiler:[[WesternAnimation/MyLittlePonyG3 Gen 3 Pinkie Pie]] is also a 'breaker' and helps them out in their quest.]]
* BreatherEpisode: Rodan and Rainbow Dash's ongoing story arc with the Neighagra Falls airshow largely could count as one as much like a slice of life episode from MLP, it doesn't have a villain trying to cause mayhem like the Gyaos, Sombra, and Enjin arcs; just a social obstacle to overcome.
* BrokenMasquerade: The Gyaos attack on Canterlot, and Godzilla's defense of it, ruins any chance Celestia had of keeping the kaiju presence in Equestria a secret.
* BroodingBoyGentleGirl: In a non-romantic sense we get a surprising inversion with [[spoiler: Monster X]] and Aria Blaze during their training together. Though both get their share of brooding, it's Aria doing most of it since Monster X is TheStoic most of the time. [[spoiler: It turns romantic later one when the crisis has passed and X becomes NotSoStoic]].
* BullyingADragon:
** Bold Rush repeatedly antagonizes Godzilla, even after it's clear his punches have no effect on him.
** Grand King Ghidorah bullies Monster X despite knowing he can transform into the more powerful Kaizer Ghidorah.
* TheBusCameBack: Many readers assumed the Sirens showing up in the Holiday special to be a one time deal and were surprised to see them return for a story arc taking place in the human world.
* CameBackStrong: The 1954 Godzilla as Ghost Godzilla in the backstory due to being resurrected by the souls of the dead from WWII. To note, he's so powerful even Junior wouldn't have been a match for him alone and was as strong if not stronger as Grand King Ghidorah. It took Junior, Gamera, and Anguirus fighting him together to finally put him back down.
* CanonDiscontinuity: Due to being released well before it aired, the sirens' history with Starswirl the Bearded follows the ''ComicBook/MyLittlePonyFiendshipISMagic'' version instead of [[Recap/MyLittlePonyFriendshipIsMagicS7E26ShadowPlayPart2 the Shadowplay two parter]]. While the Pillars were integrated into the canon, their confrontation with the Pony of Shadows occurred ''before'' the time of Celestia and Luna.
* CanonWelding:
** The timeline for the [[https://www.fimfiction.net/blog/345509/the-bridge-kaiju-amalgam-universe-timeline Amalgam'verse]] uses a combination of the original Japanese cuts and American edits of ''[=Gojira/Godzilla King of the Monsters=]'' and ''[=Godzilla 1984/Return of Godzilla=]''. The year they take place in as well as most of the plot elements are those from the Japanese originals, however the Steven Martin character from the American edits was present for the events. In the 1984 attack, the cast of the Japanese version sought an aged Martin's advice as he had the only surviving up-close record of the 1954 Odo Island and Tokyo attacks.
** The [=IDW=] comics are considered canonical to the Equestrian events for the most part. This is most evident with Starswirl the Bearded and the sirens' histories. While the Pillars did exist, their confrontation with the Pony of Shadows occurred before the arrival of Celestia and Luna, and at least Starswirl survived the encounter; the other Pillars having either perished or stuck in limbo. This left Starswirl alive and active during the events covered in the [=IDW=] comics and books. The incursion of the Sirens on Canterlot, covered in ''ComicBook/MyLittlePonyFiendshipISMagic'' then occurred just after the Nightmare Moon incident, with Starswirl using one of the portal mirrors he'd previously used to put them in the human realm where they couldn't be a threat to anyone.
** Other [=IDW=] to have happened where the ''Return of Queen Chrysalis'', which happened some time between Seasons 2 and 3, and her historic attack on Trot shortly after the above mentioned Siren incursion on Canterlot. ''The Return of Nightmare Moon'' and creation of ''Nightmare Rarity'' also happened in the gap between the second and third season, the modern-day Pony of Shadows established as a fragment of Nightmare banished from Rarity and Luna.
* CanonImmigrant:
** [[Film/{{Godzilla2014}} Hokmuto]] makes an appearance in the bonus chapter. The movie came out when the story was being written, and readers liked the character so much that Tarbtano gave him an extended cameo and fight scene.
** Though it is a MassiveMultiplayerCrossover in the kaiju home realm, Irys is the only member of the core CastHerd who is not made by Toho. In this case her species, the Gyaos, are kaiju made by Daiei.
** Characters from the [=IDW=] and book series exist more often they don't. Cloud Gremlins, Nightmare Rarity, Scorpan and Tirek's parents, Princess Amore, the seaponies and King Leo, and the comic's version of Starswirl are all mentioned or appear.
** Several fan made MLP characters such as Blade Dancer, Captain Blueberry Frost, Key Ring, and [[spoiler: Harmony]] have prominent roles in the story despite not being made by the author.
* CarFu: The sirens manage to stun the human sized Enjin by ramming into it with a van.
* CarSkiing: The CMC plus Destroyah accidentally do this with their wagon while pursuing the Baby Des.
* CasualDangerDialogue: Aria Blaze and Monster X have several moments of it when fighting and running from [[spoiler:an enraged Frostbite Sparkle, leading her back to the magic concert.]]
* CatchAFallingStar: [[spoiler:After managing to kill Grand King Ghidorah, Junior and Xenilla are spent and falling to the ground from the upper atmosphere, a height even the two of them couldn't survive. The Mane Six, Princesses, and the rest of the Kaiju all come together to save them. Justified in this case as their momentum isn't stopped in a sudden jolt, but rather redirected and given time to dissipate relatively harmlessly.]]
* CentralTheme:
** Forgiveness is hard to do and has to be worked for, but its the only way to break cycles of retribution without killing someone.
** While Love and Hate can both motivate, ultimately love is undoubtedly ''stronger'' than hate, and not as likely to consume you as hatred is.
** Obsessing over the past, be it lost status, deceased romantic partners, or old conflicts leads to ruin. Learning to let go is the only way to heal.
* ChekhovsGun:
** [[spoiler:Chibi launching herself with her copied Atomic Ray's recoil inspires Junior to intentionally utilize it to launch himself back spines first into Grand King Ghidorah.]]
** [[spoiler:The wound the Dark Hunters left on Ghidorah is noticed by Junior. He aims the above attack directly into it to run Ghidorah through the core for a decisive blow.]]
** [[spoiler:Ghost Godzilla was resurrected in the backstory by thousands of angry souls from WWI. Godzilla Senior does the same thing (though temporarily) with the countless souls King Ghidorah had consumed and the aid of Harmony to help his sons defeat Grand King Ghidorah once and for all.]]
** [[spoiler:The baby Destroyah incident comes back into play when Destroyah eats some of Giranbo's magically tainted candy. Her body splits off a baby Destroyah to purge it from her system, which the group then use to guide them to Giranbo's lair.]]
* ChestInsignia: [[spoiler:The Guardian Beasts' SuperMode forms have their symbol on their chests.]]
* ChildrenRaiseYou: Azusa was much more confident and brave after she raised Godzilla Junior.
* ChristmasSpecial:
** In a similar vein to the MLP realm jumping antics of the Halloween Special, Monster X and Irys (Hyper Gyaos) scout out the Equestria Girls realm, [[spoiler: being temporarily turned into humans in the process.]]
** There's a second one set in the Mirror Universe, where an anti-heroic version of Gigan helps a heroic version of Mane-iac prevent her enemies the Malice Mares from poisoning the city.
* CliffHanger: Almost all of the chapters end on this to varying degrees, much to the joking ire of some readers.
--> '''Tarbtano (when asked why)''': "Because I'm evil and the devil made me do it."
* ClimaxBoss: Chapter 41 has ''three'':
** [[spoiler:Grand King Ghidorah, which marks Junior and Xenilla finally becoming a SiblingTeam and fully mending the divide in their family (including with their father when Senior [[BackupFromOtherworld returns from the dead just long enough to help land the killing blow]]) by teaming up to destroy King Ghidorah, one of the biggest threats in the series. It also sees them finally use the Spiral Fire Ray.]]
** [[spoiler:Enjin Sunset, who sees Rarity finally overcome her trauma with Nightmare (a recurring element with her) and force it to power her up via HeroicWillpower to win. It also sees Enjin ''finally'' be destroyed, which will take Bagan some time to be able to make another one.]]
** [[spoiler:Kaizer Ghidorah, which sees Irys become a fully realized Guardian Beast (though one still on the enemy side), but more importantly sees Monster X finally reconcile the two parts of his personality and perform a SplitPersonalityMerge with Kaizer, with Controller 011 passing on to the afterlife and blessing X's relationship with Aria Blaze.]]
* ClingyMacGuffin: A Siren's necklace can only be removed by its wearer. [[spoiler:Not even Monster X is strong enough to remove Aria Blaze's necklace without her permission. At a much later time, Sonata Dusk gets mugged by three strangers, one of them the human Twilight Sparkle, and utterly shock her by casually stealing her necklace, and the action damages her.]]
* CombatBreakdown: Luna and Junior's fight. By the end, Luna only has use of one wing and can't fly while Junior is injured so badly he's not healing normally. Both are also battered and bloody. The final attack isn't even some big fancy move, just Luna bucking Junior ''really'' hard in the face.
* CombatPragmatist: Despite being the best martial artist of the core kaiju, Monster X isn't above 'cheap' moves. When going up against a [[spoiler:windigo mutated]] Midnight Sparkle while in human form, he considers just simply getting charged up enough to grow to full size as a kaiju and stepping on her.
* ComesGreatResponsibility: A root of Junior's motivations behind his heroics. In his eyes, because he has so much power, he's responsible for the safety of those weaker than himself, from threats they can't face but he can.
* ComicallyMissingThePoint: Godzilla Junior still fails to understand romance. Having seen both humans and Equestrians give flowers, the meaning flies completely over his head. Considering ponies are herbivores, he comes to the conclusion they are exchanging thanks by giving each other treats.
* CompositeCharacter: Several due to the combined timeline.
** The Mothra and Battra fairies are a combination of the Showa and Heisei Godzilla series continuity as well as Rebirth of Mothra trilogy. They have the names and colors of the latter, with Moll and Lora as the twins acting as Mothra's assistants and Belvera as their older sister who was an assistant to Battra. Their titles are the Elias, which are their races' name in the Rebirth Trilogy, while their species is called the Shobijin; which is what the fairies were called in the Showa series.
** Junior is of course Godzilla Junior from the Heisei continuity all grown up, but also fills the roles of all the Millennium Godzillas except GMK.
** Anguirus is a combination of his Showa incarnation, his video game version, and his scraped GMK version, with some aspects of the reboot Gamera series added in.
** Rodan and Raiga both have aspects of the Gamera reboot films like Anguirus.
** Yonggary has the original's role as an ancient creature awakened from centuries of slumber, but his design seems to be closer to his reboot's, while also having aspects of the Gamera reboot as with Rodan, Raiga, and Angurius. According to WordOfGod, he also fought Cykor as in the reboot, though as part of the Final War.
** [[spoiler:[[BigBad Bagan]]]] is an amalgam of his various unused concept selves and his video game incarnation. More specifically [[spoiler:The origin as three aspects combined into one from "Return of Godzilla", the history of the "Mothra vs. Bagan" and "Godzilla 3" drafts, and role as a world ender from the "Godzilla vs. Bagan" script.]]
** Ghost Godzilla was the GMK Godzilla combined with the unused ''Godzilla vs Ghost Godzilla'' concept.
** [[spoiler: The Leviathan is, aside from being this in a literal case, visually based off concept art for Final Wars Godzilla, Shin Godzilla, and Super Godzilla.]]
** The faieries for Mothra are taken from the Rebirth of Mothra trilogy, the three Elias, but are slotted into roles of the Cosmos faeries for Heisei Godzilla films as what they were doing before the trilogy. Additionally they are given the name the Showa and Post-Heisei saga faeries often have as the Shobijin.
* ContinuityNod: Even though this is a MassiveMultiplayerCrossover, this is set after a largely unchanged Heisei series timeline with the grown up Godzilla Junior as the current Godzilla. This explains his calmer and gentler personality, so long as he isn't attacked; unlike the neutral or evil incarnations of the character.
* CooldownHug: [[spoiler: Chibi Moon runs up to and clings to Nightmare Godzilla's leg, pleading for him to stop his rampage. Adding onto what had already happened, he does.]]
* CosmicHorrorStory:
** [[spoiler: Bagan comes off more as an EldritchAbomination than it does a kaiju.]]
** The same applies to [[spoiler:Grogar, who's on a similar tier to Bagan and having similar vague and shifting depictions of him. He also has a TomeOfEldritchLore he gave to his students that gives off a similar presence to Bagan's.]]
* {{Crossover}}:
** ''A Shimmer in the Dark'' is a crossover involving ''The Bridge's'' incarnation of Rodan [[spoiler: and Mizu]] winding up in the ''FanFic/TheShimmerverse''.
** ''Hunters and Hollows'' is a crossover where the Hunters go to the Hueco Mundo of ''Fanfic/EquestriaGirlsFriendshipSouls''.
* CurbStompBattle:
** Pit one of the most tanky and seasoned veteran fighters amongst Terra's native kaiju against a half dozen slightly smaller, inexperienced, and less durable dragons; and you can guess what happened when Anguirus [[spoiler: after reverting to his full form thanks to Rainbow Dash]] intervened against the greed grown versions of Garble's gang.
** According to the timeline, Trespasser got a severe one from Junior when it ticked him off. [[spoiler:Mutavore didn't even get the chance to ''get clear through the portal'' before getting fried by Junior.]]
** In their first meeting 370 years ago, Grand King Ghidorah dished one out to Monster X. [[spoiler:Then X turned into Kaizer Ghidorah and returned the favor.]]
** Starlight Glimmer has a wealth of magical potential [[spoiler:and forbidden dark magic use via King Sombra's notes]] but she found herself faced up a ''royally pissed off'' Godzilla Junior when Grand King Ghidorah mentally suggested her to attack him. The fight between a unicorn who's best skill is magic suppression and a massive kaiju-turned-stallion twice her size who ''does not'' use magic goes from bad to worse when [[spoiler:the Nightmare bonds to the enraged monster king. The "fight" between her and [=Nightmare/Shin=] Godzilla can be be described as Starlight frantically dodging while getting increasingly terrified as the kaiju levels a town to get at her.]]
** When the Storm King's army attempts to invade Canterlot, they only succeed in turning Cadance to stone because all of the guard and visiting delegates start fighting them, which is easily reversible; before Luna pulls the kaiju card and a very livid Xenilla downs their airship fleet before he 1-shots Tempest Shadow by roaring in her face full force.
** Sci-Twi had begun to get a good grasp on her telekinesis and ice magic [[spoiler:after instruction by the windigo Zephyrus]], but Aria Blaze managed to use her martial arts knowledge to terrify and brutalize her in the first phase of their fight by staying in close and wailing on her in hand-to-hand combat.
* DarkerAndEdgier / LighterAndSofter: An odd example as the story has its lighter and dark moments in fairly equal number, going for more of a balance between the two franchises. It's certainly darker at times than Friendship is Magic usually is, having scenes or sequences far more mature than the show has; but utilized a LighterAndSofter take on the kaiju series, such as using a heroic incarnation of Godzilla instead of a TrueNeutral or evil incarnation. Compared to most other MLP/Godzilla crossover stories like ''My Little Desotroyah'', ''The Bridge'' includes a lot more humor and light heartedness.
* ADarkerMe: The Nightmare takes your inner view of your self and your mental state to make the Nightmare form. Luna wanted to be as mature and powerful as her sister, so Nightmare Moon ended up looking like a darker version of an older Luna. Rarity worried about being forgotten, so Nightmare Rarity became a beauty ideal no one couldn't pay attention to. [[spoiler:Godzilla Junior had an extremely low image of self-worth and saw himself as just a monster, so Nightmare Godzilla became a grotesque, flaming, hideous looking beast resembling an Equestrian Shin Godzilla]].
* DavidVersusGoliath: Aria Blaze and Monster X are both smaller than Enjin in both human and, in the case of the latter two, kaiju form. Gigan, Irys, and Megalon are all shorter and smaller than Kaizer Ghidorah. Godzilla Junior [[spoiler:and Xenilla as well]] are 50 meters shorter than Grand King Ghidorah.
* DeadlyPrank: A Changeling decides to transform into [[VideoGame/{{Slender}} Slendermane]] and scare approaching ponies, only to be nearly killed by Destroyah.
* {{Deconstruction}}: Happens a few times.
** Rigidly adhering to the belief that heroes ''must'' abide by ThouShaltNotKill in all circumstances can lead to rash judgements and not understanding the circumstances the heroes were put through.
** More minor, but Mariner "Chibi" Moon is for the magical ChildProdigy Twilight Sparkle was. She lacks control over her potentially destructive power and her teachers were too scared to address it as they instead attempted to force her to use less powerful magic. This exact same situation, coupled with getting teaching from the wrong source, is what resulted in this world's version of Starlight Glimmer.
** The notion one's alternate world counterpart would be identical to each other morally. The Equestria Girl's world Twilight Sparkle ''thinks'' this is the case and [[DoppelgangerGetsSameSentiment she's destined to be a great hero like her equine counterpart.]] [[spoiler: Which leaves her blind to being manipulated by Zephyrus into causing a major conflict there and becoming a villain.]]
** The arc set in the Equestria Girls-verse harshly deconstructs the RoaringRampageOfRevenge. While the [[spoiler: Sirens and the Dark Hunters]] are justifiably angry and upset over [[spoiler: Sonata being attacked and maimed by Sci-Twi]], their ultraviolent response creates far more problems than it solves. [[spoiler: Largely since this conflict was orchestated by the Wendigos, beings who feed off of hatred and strife, who very much want to create as much violence a possible]].
*** [[spoiler: In their blind anger, Monster X and Gigan mistakingly target and attack Princess Twilight and her friends, completely innocent bystanders. The end result is they end up with a very angry Terran Defenders and Celestia coming after them, and are essentially stuck with Princess Twilight as a hostage to deter retaliation. Due to past grudges with both Equestria and Terra, they refuse to communicate with the heroes about the situation, which only fuels their distrust and anger further]].
*** [[spoiler: When the Dark Hunters and Sirens do finally catch up with Sci-Twi, they also resort to violence in order to get Sonata's gem back. Unfortunately, this also creates problems: Sci-Twi was manipulated into stealing Sonata's gem by Zephyrus, who convinced her that the people chasing after her are evil monsters. By refusing to even try and talk Sci-Twi down, instead choosing force, they only further convince Sci-Twi and Wallflower, who has also been manipulated, that Zephyrus' fabrications are correct]].
*** Eventually, all these mistakes come to a head when the big battle starts: [[spoiler: the past grudges of the Sirens and the Dark Hunters lead to a bunch of senseless conflicts with the heroes. The Dazzlings end up in an battle of the bands with the Rainbooms, while Gigan picks a stupid and pointless fight with Godzilla. Aria's savage brutalization of Sci-Twi, without even an offer of mercy, only scares and angers the girl into embracing the power of the Wendigos, and Wallflower Blush, seeing Aria beating Sci-Twi nearly to death, angrily uses the Memory Stone on X, which allows Boreas to posess him. Aria takes on her Kaizer X form to fight Boreas, but it does her no good since her powers only fuel Boreas, and she can't fight without killing X's body]].
*** [[spoiler: The end result of these screw-ups is nothing short of disaster: the Sirens and the Dark Hunters not only fail in their task, but have only made the Wendigos stronger by creating so much strife and hate: Boreas walks away with X's body, Notus is able to feed off everyone's self-doubt, and both the Sirens and the Dark Hunters are utterly ashamed and horrified with themselves for causing things to spiral out of control. While Sci-Twi learns the truth about Zephyrus, she is too badly hurt by Aria's attack to warn Wallflower, who due to the aforementioned attack is in fear for Twilight's life, and is thus easily manipulated by Zephyrus into erasing Sci-Twi's memories]].
*** [[spoiler: Only one solution is left to the Dark Hunters and Sirens: admit their mistakes to the heroes, drop their grudges, and make amends. Gigan is forced to acknowledge he was wrong to act the way he did, while Aria acknowledges she only fueled Boreas by beating Sci-Twi within an inch of her life]].
* DefrostingIceQueen:
** The Sirens become substancially nicer over time as the Sirens begin to use a more successful song based off love magic instead of strife after Aria discovered it in during the Enjin arc.
** Adagio Dazzle especially got several treatments of this. While still arrogant and prideful, she wound up significantly warming to the Dark Hunters, Gloriosa, and Twilight Sparkle over the course of the Winter War arc.
** [[spoiler:Destroyah manages this after over 30 chapters of development. After being forced to not go on the attack instantly and experience new emotions and feelings, she gradually warms to Equestria and the Crusaders. Enough that by the Halloween Special she goes full MamaBear to protect them.]]
* DesignatedGirlFight: Downplayed and subverted significantly as multiple battles were present before it with gender as an afterthought, but the first kaiju on kaiju rumble in Equestria is Mothra vs. Gyaos.
* DestroyerDeity: [[spoiler:Bagan is the God of Extinction (though it seems to be self proclaimed). Empress Flurry Heart's report refers to a God of Destruction listed separately from him, which is implied to be Grogar or possibly even Junior himself. Ghidorah gets a glimpse of the being in his dying moments as well. A potential candidate is the Leviathan, a monstrous transformed state Godzilla Junior has.]]
* {{Deuteragonist}}: The Dark Hunters can be seen as this, as they are the most often focused characters outside of the 'Kaiju Six' and Mane Six, and their actions drive a large part of the plot.
* DidYouJustPunchOutCthulhu:
** [[spoiler:Aria and Monster X killing the first Enjin.]]
** [[spoiler:Rarity killing the ''second'' Enjin by exorcising him from Sunset using Nightmare's power, then throwing his unstable core into Grand King Ghidorah and severely wounding him, helping Godzilla Junior, Xenilla, and [[BackupFromOtherworld Godzilla Sr.]] destroy the planet killing space monster once and for all.]]
* DismantledMacGuffin: [[spoiler:The spell needed to open the entrance to Tambelon, Grogar's domain and prison, is split into four pieces and scattered among the [[TomeOfEldritchLore tomes of dark magic]] he gave to each of his students. Furthermore, the magic of either Harmony or something related to hers (like an Alicorn) is actually needed to free Grogar. Chrysalis is currently looking to assemble the spell and free her teacher.]]
* DisneyVillainDeath: The implied fate of the Cloud Gremlins once Rainbow Dash and Rodan destroy their cloud fortress.
* DistractedByTheSexy: Fancy Pants and a few other stallions gawk and stumble over their words when they meet Mothra Lea in the form of an Alicorn Princess.
* DivineIntervention:
** A currently then unnamed spirit or deity, [[spoiler: Harmony]], is the one who converses with and sends King Caesar back into Equestria's past.
** Happens again later on when the same being saves Twilight Sparkle's life and convinces Monster X to spare a guard.
** Considering Mothra's mythical status, she coming to Twilight's aid could arguably count.
* DontYouDarePityMe: Gigan is not ashamed of his cybernetics having progressed to the point he's mostly mechanical as CyberneticsEatYourSoul is not in play and he's still 100% himself. If someone brings it up like he should mourn his mostly lost organics, he's firmly tell them to can it.
* {{Doorstopper}}: As of April of 2021, the story is at over 1,000,000 words and climbing, not even counting the various sidestories, optional bonus chapters, and supplemental information blogs.
* DoubleMeaning: Xenilla repeatedly calls Godzilla Junior "Icka'brod", meaning "Brother" and always refers to him as his little brother. This is both Xenilla using it to get under Junior's skin after the latter denies the familial relation [[spoiler: and foreshadowing the fact Xenilla sees Junior as family and loves him as such.]]
* TheDragon: It's shown so far that Destroyah plays this role to Xenilla, albeit begrudgingly at best. [[spoiler: Subverted in that they start out evil and are certainly not kind, but they are not the villains of the story. And Destroyah's grouchy demeanor doesn't stop her from being the ''only'' Mutation actually loyal to Xenilla.]]
* DragonAscendant: [[spoiler:Sombra, Discord, Tirek, and Chrysalis all became BigBad level threats in their own right after their mentor, Grogar the Shadow King and Nexus of Dark Magic, was sealed away by Harmony.]]
* DramaticIrony: There's quite a bit of this, as not all of the non-kaiju characters know that the newcomers they're interacting with are normally gigantic monsters.
** Xenilla is an enormous reptilian mutant born in the depths of space, leader of an entire faction of Kaiju, and bent on the conquest of Terra. Seeing such a villain [[http://www.deviantart.com/art/GETOFFOFME-455353329 awkwardly comforting Sweetie Belle]] to keep up appearances is absolutely priceless.
** When Sunset Shimmer meets humanized Hyper Gyaos in the Equestria Girls realm, she assumes that Gyaos is from an abusive family due to her BrokenBird demeanor and claiming not to have a name. Given that Hyper Gyaos's "family" consisted of a mindless flock of horrific flying monsters that regularly turned to cannibalism to sate their unending hunger, Sunset is more right than she could ever begin to fathom.
** Both the Sirens and Monster X assume Enjin is after the Siren's magic after it tried to attack Aria in the hospital, forming an EnemyMine team-up to deal with it. Unbeknownst to them, Enjin is ''actually'' after kaiser energy that's within Monster X [[spoiler: and Aria after her exposure to Kaizer Ghidorah.]]
** [[spoiler:Sunset and the Sirens meet long before their Rainbow Rocks encounter, but while both notice something a little off about the other, neither seem to actually realize what the other is.]]
** Neither the Equestria Side [[note]]Mane 6, Princesses, Terran Defenders and turn-coat Mutations[[/note]] nor the Sirens and allied Dark Hunters are aware of the Equestria Girls "Sci-Twi" existing. [[spoiler: Causing Monster X to go on a warpath against ''Princess'' Twilight Sparkle when Sci-Twi scarred Sonata Dusk and stole her necklace, thinking the alicorn princess did it. It results in he and Gigan kidnapping her, spurring the wrath of Mothra Lea.]]
%%* DeusExMachina: They do happen in a subtle way.
* DreamingOfThingsToCome:
** Celestia has a vision of the gyaos attack on Canterlot (and Godzilla's counterattack) shortly before it happens.
** Upon his 'birth', Xenilla got a onslaught of them foreseeing some monster that would destroy Terra. He assumed it was Godzilla.
** Rarity has a nightmare of the BigBad's forces destroying Equestria if he succeeds in his plans. [[spoiler: It would appear to have been sent by the Nightmare Forces.]]
* DudleyDoRightStopsToHelp: Flash Sentry in a nutshell. When he's just trying to get back to the castle from the train station, he keeps having to stop and double back every time he sees something wrong. Filly losing her balloons, said filly losing track of their parents, veterinarian hauling heavy bags of animal feed by herself, helping a very angry cat out of a tree, etc. Apparently this happens to him a lot.
* DugTooDeep: The short "Extinction Hour" reveals [[spoiler:Bagan was freed from Attu Island when an aspiring archaeologist named Andria Young inadvertently broke an artifact maintaining his seal while drilling. Though Tarbtano says that he would have broken out sooner or later and Andria's mistake only accelerated the process.]]
* {{Dumbstruck}}:
** PlayedForLaughs with Rarity upon Anguirus casually admitting to be over 70,000 years old. After a bit she takes it in stride and jokingly asks for his aging secret.
** A more dramatic example was in chapter 33. [[spoiler: Moonbeam Glimmer gets one that lasts for hours after Godzilla Junior confronts her by... putting some flowers on her parent's grave, saying he forgives her for what she put him through, and says she needs to forgive herself to get through her SurvivorsGuilt. Seeing someone she'd pegged as a monster act so benevolently throws her entire mind out of the loop for the rest of the chapter.]]
** Happens to [[spoiler:Grand King Ghidorah when Xenilla manages to use the PowerOfLove to briefly overpower him. He doesn't have time to recover before Godzilla Junior impales the King of Terror from behind.]]
* DynamicEntry: Godzilla Junior returns to his full power in a brilliant display, complete with a massive PillarOfLight.
* EmergingFromTheShadows: King Sombra naturally does this a lot.
* EstablishingCharacterMoment:
** For some of his gruffness and more villainous incarnations, the moment the princesses and Mothra ask him to help save Canterlot and he agrees on his own free will to fight off a 200+ strong flock of Gyaos; we know we definitely have a heroic Godzilla on our hands.
** Princess Celestia's entry into the story is to singlehandedly smash the quarreling kaiju against opposite walls, loudly shout that the fighting ends ''now''; and then showing her mature side by calmly defusing the situation then powering down.
** [[spoiler: Monster X]], though he goes unnamed for a time, leaves the first pony he encounters unharmed, says he doesn't remember his original name, and then even rescues another pony being attacked by legion soldiers. NobleDemon indeed.
* EvenEvilHasStandards:
** The Nightmare force/Pony of Shadows might be the literal spirit of Nightmare Moon and wanted to rule Equestria as a dictator, but even she is terrified of the BigBad in an EvilVersusOblivion way.
** Practically Monster X's calling card, to the point he is so restrained from excessive violence and destruction he doesn't really act like a villain at all. WordOfGod has compared ''The Bridge's'' version of X to a soldier in an enemy army. They may be fighting for the other side, but doesn't dictate them being moral or immoral.
* EveryScarHasAStory: Princess Luna and Godzilla Junior exchange some explanations upon pointing out each others old wounds.
* EvilCannotComprehendGood:
** The BigBad [[spoiler:Bagan]] has a VillainousBreakdown at one point, unable to understand why Godzilla Junior and the other Kaiju would choose to defend Equestria.
** Grand King Ghidorah demands to know why Godzilla Junior is a hero despite having "no destiny" (almost all the other heroic Kaiju were designed or [[TheChosenOne chosen]] for the role, while Godzilla is just a random dinosaur mutated by radiation). Ghidorah is infuriated when Godzilla says he simply [[TheUnchosenOne chose to be a hero]].
** The [[spoiler: Windigoes]] invert this to a horrific degree. [[spoiler: They are able to get Sci-Twi and Wallflower to work for them by pretending to be benevolent spirits, and use truths and outright lies to claim that their tasks are in fact meant to save their world from destruction. In short, they basically manipulate the two girls' decency for their own awful gains]].
** Completely averted with the Dark Hunters. Since they can be more [[PunchClockVillain accurately described as mercenaries]] rather than megalomaniacs, they have a good appreciation of things like teamwork and camaraderie. [[spoiler: One of the reasons they realize that Princess Twilight wasn't the one who stole Sonata's necklace was her willingness to surrender herself to them to protect her friends. Nobody who would sacrifice herself to protect her friends could ever do something so horrible]].
* EvilCounterpart: Xenilla plays this straight to Godzilla Junior [[spoiler: at least in the latter's eyes. Some interaction makes it seem like Xenilla is more of an Anti-villain than the straight up monster Godzilla thinks he is]]. Xenilla himself gets one in the form of King Sombra, another crystal creating villain who uses both brains and brawn to achieve goals; and are usurpers to a "throne". However Xenilla is reigned in by PragmaticVillainy [[spoiler: and is really GoodAllAlong]] whereas King Sombra is a boastful, self described sociopath who delights in mayhem.
* EvilDetectingDog:
** Fluttershy's animals react with fear to Xenilla, but she doesn't notice.
** All animals steer clear of Enjin.
** [[spoiler:King Caeser was able to sense Lord Tirek's evil ''long'' before he saw him.]]
** This is a big thing with Jeog: despite all her power, dogs ''always'' detect her and perceive her as evil. Not only that, but she avoids them, as their barks are extremely loud and painful to her.
* EvilIsBigger: Zigzagged. For instance many of the larger Equestrians and kaiju are larger than average, but there are also many large heroes. While Grand King Ghidorah is a full 50 meters taller than Godzilla Junior; Junior is much larger than the gyaos who only proved to be a threat via ZergRush. Princess Cadance is shorter than King Sombra, but [[AmbiguouslyEvil Xenilla's]] unicorn form is slightly larger than the latter.
* EvilKnockoff: In a sense: while Grand King Ghidorah was the more evil of the two, the Heisei King Ghidorah is explained as having been based off the future people's records of Grand King Ghidorah.
* EvilPowerVacuum: With Xenilla and Destroyah in Equestria, their faction has turned on each other, fighting for control. Note, this more or less starts the second they disappear.
* EvilVsEvil: This happens ''a lot''.
** Red, demonic murderer who indulges in torture vs. the story's BigBad, a cold and calculating destroyer. [[spoiler: Red would have won if the fight continued longer, but was outnumbered and forced through a portal into an unknown dimension.]]
** A lesser example would be the short duel between Monster X and Grand King Ghidorah. It's quite clear those two do NOT like each other even if they are technically on the same side now. [[spoiler: It's shown this isn't the first time they've thrown down.]]
** In the holiday specials, we have Gigan vs. Mane-iac and [[spoiler: human form]] Monster X vs. Aria Blaze and Sonata Dusk.
** King Sombra vs. Xenilla. Though again, the latter's place on the morality scale is debatable.
** A team fight breaks out with Gigan, Megalon, and Irys vs. Grand King Ghidorah.
** [[spoiler: The trope gets taken to the extreme when [[EldritchAbomination Enjin]] is sent to the human realm from Equestria Girls. Lacking developed heroes to face it, [[BigGood Harmony]] has to rely on [[AntiVillain Monster X]] and [[OurSirensAreDifferent the Sirens]] as the best chance to fight it off.]]
** Part 2 of Chapter 29 makes it clear that even though Kaizer Ghidorah opposes Grand King Ghidorah, he is not a good guy because he doesn't care about anyone else and will gladly kill them just for being there.
** [[spoiler:Chrysalis [[TheStarscream secretly intends to use her]] VillainTeamUp with Bagan's forces to restore her EvilMentor [[GodOfEvil Grogar]], fully expecting this trope to come into play between him and Bagan, with her money on Grogar.]]
** From Tales of the Amalgamverse: [[https://www.fimfiction.net/blog/747964/tales-of-the-amalgamverse-monster-x-vs-ultraman-belial-end-of-days Monster X vs Ultraman Belial]].
* ExactlyWhatItSaysOnTheTin: The [[http://www.fimfiction.net/story/121836/the-bridge-a-godzilla-mlp-crossover FiMfiction page]] extends the title and says precisely what kind of crossover it is.
** PlayedForLaughs with the humor based Halloween chapter. "''Gigan gets attacked with shampoo as Megalon cosplays a Pirate''".
* {{Expy}}: Because most of the kaiju only get hints of their personality in the source material, Tarbtano gave them all some traits to fill in the blanks. The result is minor cases of this underneath the source material, though thankfully in a tactful way that doesn't turn into CaptainErsatz.
** One reader noticed Monster X has a similar personality to [[Series/PowerRangersWildForce Zen-Aku]], with a possible ShoutOut scene. WordOfGod confirmed this was intentional.
*** Several readers also noticed that his human form [[spoiler: when in the Equestria Girls realm]] very closely resembles Homura from ''{{Manga/Sekirei}}''. Tarbtano evidently had never even heard of the series, but did note it was a very odd coincidence.
** Mothra seems to be a mix of her canon self from the Rebirth of Mothra series with some [[VideoGame/KidIcarusUprising Lady Palutena]] and [[Videogame/LeagueOfLegends Leona]] thrown in.
** Anguirus appears to be channeling [[WesternAnimation/TransformersPrime WheelJack]] at times.
** Rodan has more than one similarity to Franchise/TheFlash.
** Xenilla's behavior has been compared by readers to [[{{Manga/Hellsing}} Alucard]], with the author playing with this and giving him some lines reminiscent of the infamous [[WebVideo/HellsingUltimateAbridged abridged]] series.
*** [[spoiler: The revelation that Xenilla's failed patricide actions, which indirectly led to the death of Godzilla Senior, were based on a desire to save the world and avoid unnecessary deaths, coupled with his desire to act as an evil enemy to his 'brother' Junior to make him strong enough to kill him also makes Xenilla have similarities with [[{{Franchise/Naruto}} Itachi Uchiha]]. Also, just like Itachi, Xenilla starts to show more empathy and emotion after his ruse was revealed.]]
** WordOfGod states that Megalon is modeled after [[WebAnimation/RedVsBlue Caboose]] and [[Manga/FullmetalAlchemist Alphonse Elric.]]
** RaisedByHumans with a [[MuggleFosterParents human mother]]? Check. UpbringingMakesTheHero? Check. Considered one of the BigGood of his world? Check. Godzilla Junior takes some cues from {{Franchise/Superman}}, though without TheCape personality. Some readers have compared Godzilla Junior to a more jaded, mentally unwell but still moral [[{{Transformers}} Optimus Prime]] and WordOfGod cites [[{{Franchise/Metroid}} Samus Aran]] as an influence.
* FacePalm: Gigan does the closest equivalent he can do with no hands, upon seeing Megalon's antics.
* FailedAttemptAtDrama: [[spoiler: Princess Celestia]] makes it very clear that the beings who [[spoiler: kidnapped Twilight are going to pay dearly for it]]. Problem is, [[spoiler: since she's been reduced to a young human girl]], she comes across as adorable rather than a deadly MamaBear.
* FamousAncestor:
** Prince Blueblood is a descendant of Princess Platinum, accounting for his royal title.
** Flash Sentry and Indigo Zap belong to a long line of esteemed royal guards and police officers, their ancestor Ardent Sentry was a captain who helped liberate Trot during the changeling invasion hundreds of years ago. For her heroism, "Captain" became the highest rank in the newly formed Royal Guard. [[spoiler: Ardent Sentry herself had one. Her unknown father was none other than Commander Hurricane. The Sentry family all know, but keep it secret until one of their members prove themselves.]]
* TheFairFolk: They ''used'' to be widespread on Terra, but now they are extremely rare. They and magical creatures like dragons were the result of normal humans or other animals being altered by high magical mana levels, creating subspecies like rakshasa, oni, and elves. When mana levels plummeted Post-Toba catastrophe, the fair folk lost their magic and largely turned back into normal people and animals, one of Anguirus' rakshasa creators being half changed at the time of his creation. Over the centuries past, only extremely rare aberrations would crop up to keep the legends alive. The only publicly known fair folk left are the three shobijin.
* FatalFlaw: The Sirens, Adagio and Aria in particular, suffer from pride and paranoia. It isolates them from potential allies and hinders their own cohesion and ability to work with one another. While they gradually do overcome these flaws, [[spoiler: making amends with one another and accepting the Dark Hunters as allies]], they don't go away entirely. [[spoiler: They end up escalating Sonata's mugging and disfigurement into a crisis across both the human world and Equestria; first by kidnapping Princess Twilight after mistaking her for her human counterpart, refusing to admit their mistake and let Twilight go out of fear of retaliation, thus bringing the Terran Defenders into an already volatile situation, and later needlessly brutalizing Sci-Twi to the point of driving Wallflower to use the Memory Stone on X, allowing Boreas to posess him]].
* FireAndBrimstoneHell: Zenith was this upon its first appearance. Averted once the BigBad puts it under new management, turning it into a smooth flat plane of obsidian and frigid air.
* FixFic: To a minor degree. The ''Father's Day'' special fixes the apparent plot hole in the ''Hearth's Warming Eve'' special where two alicorns that look like Celestia and Luna appear on a historic flag that predates them. In the special, it's establish via flashback that alicorns are a fictional species up until that point and the then infant sisters resembling the flags is taken as a good omen.
* FlatWhat: Anguirus gives one (albeit with an accent) after seeing Derpy Hooves come barreling into the palace, erratically flying around and nearly crashing into several characters before delivering her letter to Celestia and departing.
-->'''Anguirus''': ....W'at?
* FlingALightIntoTheFuture: Anguirus and Rodan were members of a series of artificial guardian beasts made by now extinct civilizations from the distant past, circa 70,000 BCE. They were specifically made to protect the world when [[spoiler: Bagan]] was set to return 100,000 years later; but got woken up early. [[spoiler: Unfortunately, so did Bagan.]]
* FlippingTheBird: Gigan and Xenilla have both mentioned they would do this if they had fingers.
* TheFogOfAges: Princess Luna's earliest memory is a sweet gentle voice who may or may not be her mother. The next is of her and Celestia as children being found and raised by a foster family.
* ForHalloweenIAmGoingAsMyself:
** Megalon gets mistaken for being in costume, and talked into going trick-or-treating with Pipsqueak.
** The Crusaders question if Lea is going to do this during the 2019 Halloween Special, but subverted in that she doesn't.
** A more sinister example: Giranbo, an evil extradimensional witch, goes as a 'witch classic', with her profile noting that her appearance under the mask is near identical and that she likely inspired the look in the first place.
* {{Foreshadowing}}:
** The Mirror Universe's Xenilla utterly loathes his world's Godzilla Junior and Mirror!Godzilla wants them to team up. [[spoiler: When one takes into account this means the main world's brothers have a perspective flip, it hints that Main!Xenilla actually doesn't hate his brother.]]
** When Cadence meets Xenilla, his heart is described as being 'shades of grey'. [[spoiler:Fitting for someone with genuinely good intentions who does bad things for good reasons rather than black like someone would expect from the apparent archvillain.]]
** The trip to Mako Island all but confirms the sirens are the daughters of two exiled mermare princesses, but the exact nature of who the fathers were was considered so heinous it was scrubbed from history. [[spoiler:They are later revealed to be the arc villains of the Winter War arc, the windigos.]]
** King Sombra mentions being Grogar's pupil. [[spoiler:It later turns out so was Chrysalis and Tirek, and he's not only the GreaterScopeVillain for the Equestrian side, but the 'nexus' of dark magic itself and comparable to Bagan himself. Chrysalis decides to turn the offered VillainTeamUp with Bagan into a plan to resurrect or restore him.]]
** When talking about the Windigos, it's brought up that despite their naming theme, there's apparently no Windigo aligning to the Eastern Wind, or at least hasn't been in a very long time. [[spoiler:In Chapter 51, a flashback shows a fourth windigo ''did'' exist a battle between them against Starswirl and the Pillars seemingly destroyed it or sealed it into limbo]].
** Zephyrus had a scheme in mind behind violently ripping Sonata's Siren Heart gem out, leaving Sonata scarred, traumatized, and mute. She also begins unconsciously absorbing dark magic and strife magic without a filter and generating ice. [[spoiler:Chapter 52 reveals the ploy of the windigos is to turn their daughters into their SuperiorSuccessors, when Sonata transforms into a fourth Windigo, dubbed Australis.]]
* ForgivenButNotForgotten: [[spoiler: After the Dark Hunters and Dazzlings release her, Princess Twilight has no problem calling them her new friends...but makes it clear they were wrong for what they did, and that she's calling the shots from now on]].
* ForWantOfANail: Due to the combined timeline, some things happened very different from canon in both Terra and Equestria.
** Due to Junior's existence, the events of ''Film/RebirthOfMothra3'' derailed about half way through. Instead of needing to go back in time to try and kill Grand King Ghidorah when he was younger and weaker, Lea got help from Junior. As a result, Grand King Ghidorah retreats instead of being killed and Lea never got her [[SuperMode Armored and Eternal forms]] (though according to WordOfGod she'll eventually reach that power on her own). [[spoiler:This later causes ''another'' nail when Ghidorah derails the events of "The Cutie Map" by kidnapping Our Town and sending Starlight on a collision course with the heroes ''earlier'' than in canon.]] Continuing the domino effect, [[spoiler: this in turn causes Starlight to see the folly of her actions by how she hurt Chibi Moon, instead of Twilight convincing her. She then pulls a HeelFaceTurn on her own.]]
** Due to the Jaegers generally being more powerful, the Terra Defenders existing, and Godzilla destroying the Rift himself, the events of ''Film/PacificRim'' went wildly different and many Jaegers and their pilots are still alive who originally died.
** ''Film/Gamera2AdventOfLegion'' never happened, as Legion was recruited by [[spoiler:Bagan]] beforehand, so she's not only still alive but has never even ''met'' Gamera.
** [[spoiler:Azusa Gojo being sent to talk to Junior split the timeline off from Empress Flurry Heart's timeline. While exact details are unknown, one thing is: the Nightmare Godzilla incident ended ''[[https://www.fimfiction.net/story/121836/the-bridge-a-godzilla-mlp-crossover#comment/8509435 far worse]]'' due to the fact that without Azusa's intervention, Nightmare Godzilla wouldn't have been stopped before a tragedy occurred and a highly destructive fight between Grand King Ghidorah and Nightmare Godzilla would most likely happened.]]
** The Storm King's army attacks a lot earlier than in canon, but Xenilla is in Canterlot and defeats them rather easily, so the events of ''WesternAnimation/MyLittlePonyTheMovie2017'' don't happen. However, as a result the Storm King is still at large.
** Citing similarities between them and knowing Starlight Glimmer would need guidance coming from someone with experience using dark magic if Starlight is to control it and atone for what she'd done [[spoiler:Princess Luna takes up Starlight Glimmer as her apprentice instead of Twilight Sparkle doing so.]]
** Due to the Dark Hunters constantly traveling to the Equestria Girls world and Aria Blaze awakening new powers, ambient magic increases and the Equestria Girls start to gain their superpowers two movies early. Instead of the [[WesternAnimation/MyLittlePonyEquestriaGirlsFriendshipGames Friendship Games]] being the catalyst for [[TheMagicComesBack magic's dormancy ending]], it was Aria's mass magic use against Enjin with the sirens, now using stronger magic based off ThePowerOfLove, keep the momentum going. [[spoiler:Also, the human Twilight Sparkle arrives early due to the battle with Enjin piquing her curiosity. This ultimately results in an entire story arc that loosely combines elements from all four of [[WesternAnimation/MyLittlePonyEquestriaGirlsRainbowRocks Rainbow Rocks]], [[WesternAnimation/MyLittlePonyEquestriaGirlsFriendshipGames Friendship Games]], [[WesternAnimation/MyLittlePonyEquestriaGirlsLegendOfEverfree Legend of Everfree]], ''and'' [[WesternAnimation/MyLittlePonyEquestriaGirlsForgottenFriendship Forgotten Friendship]] .]]
** In the ''Jurassic Park'' series material on Terra, the events that took place on Isla Sorna in 1997 drastically differ from the second movie [[note]]Due to the retelling borrowing heavily from the Crichton novel and ''Carnosaur'' series being melded in[[/note]]. As a result, Peter Ludlow remained loyal to John Hammond and worked with Simon Masrani to create Jurassic World.
** Monster X and Aria Blaze's battle against Enjin ended up causing Gloriosa Daisy to discover the cave with the magic geodes and gain her magical powers two movies early. She and Timber Spruce later become allies of the Sirens and Dark Hunters. Since she has people to talk to and help practice her magic, and since the Sirens helped attract more campers so she is not in debt to Filthy Rich, she is far better adjusted and less likely to go crazy.
** The Halloween 2018 special reveals the one between the Heisei and Showa timelines, or at least one of them: the Futurians never teleported Senior to the Bering Sea, resulting in him being mutated alongside his father in 1954 rather than much later.
* FourTemperamentEnsemble: The Dark Hunters.
** Sanguine: Megalon, the most easy-going and jovial team member, keeping morale up with his antics.
** Choleric: Monster X, the de-facto leader and devoted to tasks with the other's safety.
** Melancholic: Gigan, the most reserved and task oriented member, keeping the others level.
** Phlegmatic: Irys, the calmest and most devoted to the team as she sees it as a new family.
* FreeFallFight:
** The final part of the battle between Enjin and [[spoiler: Kaizer form]] Monster X after the latter blasted Enjin off the cliffside and hit him midair with a DivingKick. Enjin stubbornly refuses to die and grapples X while mid-air, but X wins by punching and ripping the trapped Aria Blaze out of Enjin's core, causing its body to fall apart because it was using her as a power source to keep fighting.
** The latter half of Grand King Ghidorah's fight [[spoiler: against Godzilla Junior ''and'' Xenilla, ending in a BeamOWar to end all beam fights.]]
* FriendOrFoe: The fight with Princess Luna and some guards against Godzilla Junior was primarily caused by a misunderstanding. The former party just woke up in a daze after crash landing through the castle roof and when a guard grabbed his hoof, he thought he was being attacked. The guards were just trying to detain an intruder who'd broken into their capital and left a huge crater in the throne room. This spurs a brawl against some of the guards which gets Luna involved.
* FusionDance: Several times.
** The three primordial aspects, Enjin, Mizu, and Doragon fused together to become Bagan; who started as a composite body before morphing into a new form.
** [[spoiler: Mass energy transfer from Zilla, Gojira, and the Showa Godzilla into Godzilla Junior incarnates him into the Leviathan in the Halloween episode, which according to WordOfGod is on par with the Nexuses.]]
** [[spoiler: Frostbite Sparkle is a version of Midnight Sparkle powered by a stolen Siren Heart instead of Elements of Harmony, with the alpha windigo Zephyrus fused with Sci-Twi.]]
* GenderFlip:
** Mothra Lea is a female version of Mothra Leo from the ''Film/RebirthOfMothra'' trilogy. WordOfGod states this is because Mothra is often a female kaiju anyways and keeping it consistent was simpler.
** The Zilla from ''Film/Godzilla1998'' was originally a male that can reproduce asexually. In this continuity, Zilla Sr. was a female that underwent parthenogenesis due to being denied a mate ([[ShownTheirWork just like real lizards]]).
* GeneHunting: Invoked, but averted. Neither Godzilla Junior, nor Princess Celestia and Luna know who their biological parents are as both were found when they were too young to form concrete memories. However, neither feels any need to figure it out as they were perfectly content with their respective adoptive families.
* GenerationXerox: Cadence apparently looks exactly like her ancestor Princess Amore. [[spoiler: However, it's implied that Amore was actually Cadence's mother.]]
* GeneticMemory:
** Xenilla, being a mutated clone of Godzilla Senior, starts getting some memories from his "father" in his dreams. [[spoiler: Because it was the 1990s Mothra who carried the G-cells that became him into space, he also has some of her genetic memories.]]
** Mothra has this too, having some of the memories of all her predecessors (mother, grandmother, etc) as well as her "father" Battra.
* GentleGiant: Godzilla Junior [[note]]Roughly same height as Princess Luna, making him a full head taller and much more heavily built than even large stallions like Big Mac[[/note]] and Princess Celestia [[note]]tallest and largest of the natural Equestrians[[/note]]. Both of them are their world's respective BigGood.
* GlorifiedSpermDonor: [[spoiler: Commander Hurricane was completely unaware Ardent Sentry was his daughter until she was a grown mare, her having been conceived in a one-night stand of celebration with a tavern worker named Speedy Service. Her mother, Speedy Service, choose to keep it secret as she and Hurricane didn't love each other and he was quickly rising through the ranks; not wanting to trap him in a loveless marriage or damage his reputation. She did tell Ardent, leaving it to Ardent to tell Hurricane when she thought the time was right.]]
* GlowingEyesOfDoom: As in canon, happens a lot when certain characters are either charging up or expending large amounts of energy. Most often with the princesses and godzilla siblings.
* GodSaveUsFromTheQueen: Invoked against but thoroughly averted by Princess Celestia, but not everyone thought so at first. When she was forced to banish the Nightmare Moon turned Luna, some in the past saw it as her trying to make a tyrannical power grab and launched the "Nights Rebellion". Celestia managed to peacefully dismantle the uprising without bloodshed by proving she was everything ''but'' this trope. Still the fear of being seen as this is why Celestia turned down the title of Queen even as she grew up and had a solo rule, keeping her Princess title to seem more approachable.
* GodzillaThreshold:
** Funnily enough, unleashing Godzilla Junior on the oncoming Gyaos horde heading for Canterlot is ''not'' this. While Princess Luna was not a fan of the idea at all, Celestia, Twilight, Mothra, and Junior himself all agree to it and multiple parties work to keep the fighting outside the city limits.
** Played straight with [[spoiler: Harmony having to rely on a team up between Monster X and the Sirens to protect the Equestria Girls realm from Enjin, because none of the heroes in that world are strong enough.]]
** When Rarity is attacked by [[spoiler:Enjin who is possessing Sunset Shimmer's body, Rarity has no choice but to become Nightmare Rarity again to fight back.]]
* GoMadFromTheIsolation: Subverted with the unnamed narrator of ''Time and Isolation'' [[spoiler: (Monster X)]]. He stays sane despite being imprisoned for decades, but isolation and relentless nightmares cause [[IdentityAmnesia his memory to degrade into nothing]].
* GoodAllAlong: [[spoiler: Xenilla's entire role as the EvilCounterpart to Godzilla Junior? All a lie so he could constantly push his brother to get stronger and stronger for his own and the world's safety.]]
* GoodAnimalsEvilAnimals: Discussed and inverted when it comes to how Godzilla Junior viewed the animals around him from his youth. To him, typically "bad" animals like snakes or lizards weren't too active but were placid, didn't kill more than they ate, and didn't bother him. By contrast he hated the "good" animal example of dolphins, finding them to possess a cruel intelligence, killed for fun; and frequently harassed him before he got big enough to scare them off. This is why he had no qualms about eating them and whales during his teenage year, despite humans and Equestrians reacting with shock at the idea he could be so nonchalant about it.
* GottaCatchThemAll: The BigBad regularly has his group explore the multiverse and gather as many magical artifacts as possible.
* GoodIsNotDumb: The good characters are genuinely nice, even in the case of the more brutal Terra Defenders, but none of them are by any means ''stupid''.
* GreaterScopeVillain:
** It's revealed that [[spoiler:dark magic has a different 'nexus' from other types and Chrysalis, King Sombra, Tirek, and possibly Discord learned it from that nexus. Chrysalis near instantly turns the offer of a VillainTeamUp with Bagan into a plan to restore said nexus and Legion compares his magic to ''Bagan's''. Said nexus? ''Grogar''.]]
** In a sense [[spoiler:Bagan is basically this for Xenilla's ''entire run'' as a villain, albeit indirectly. Xenilla misinterpreted the memories he got from Mothra of Bagan's rampage as being a vision of a future rampage by Senior, which directly lead into his gambit to the strained relationship with Junior that made him start his plans.]]
* GrievousHarmWithABody: What weapon does Godzilla grab to bat away scores of Super Gyaos rushing him? One of the Super Gyaos rushing him.
* GrimUpNorth: The BigBad was sealed away under an uninhabited island in the North Sea called Attu.
* GroinAttack: Monster X takes one with a metal pipe from Sonata Dusk, [[spoiler: because in a human body he wasn't aware that was a weak spot and got caught off guard.]]
* GuysSmashGirlsShoot: Zig-zagged with the kaiju. Mothra might prefer to keep back and fire barrages of energy blasts because her form is less adept at close quarters brawling. On the other hand [[DarkActionGirl Destroyah]] has absolutely no qualms about ripping her foes apart at range or up close. Surprisingly averted with the MLP roster.
* HalfSiblingAngst: Averted with the Sirens, none of whom are full biological siblings. Adagio Dazzle and Sonata Dusk have the same mother, Melpomene but different fathers [[spoiler:the windigos Zephyrus and Notus respectively]], and Aria Blaze is technically their cousin from Melpomene's little sister Hymnia [[spoiler:and the windigo Boreas]]; but they all treat each other like siblings. Hymnia did raise them all together and Adagio can only barely remember Melpomene, but they aren't ignorant of their relation.
* HalloweenEpisode: Generally has one every year. While some are silly and fun, others are completely terrifying.
** A bonus chapter focusing on the misadventures of Gigan and Megalon has the latter getting roped into trick-or-treating with Pipsqueak (who thinks he's just in costume) and enjoying himself.
** ''Godzilla vs Gabara'' sees a flashback to when Junior had to stop the ancient dream invading Oni King Gabara the Ancient from making his return.
** ''The Bridge: Hocus Smo'cus'' involves the Sirens attempting to understand what Halloween is about.
** 2018 saw a special where Junior, the Showa Godzilla, Zilla Jr., and the Legendary Godzilla all face off with Godzilla Earth.
** 2019 sees Destroyah, Lea, and Twilight have to stop the extradimensional ChildEater Giranbo from abducting Ponyville's children.
* HandshakeSubstitute: As Gigan and Megalon don't normally have hands, they and Monster X bump forearms instead.
* HardTruthAesop: Firmly believing in BlackAndWhiteMorality can lead to rash judgements. Namely if a hero is forced to break ThouShaltNotKill in a crisis situation, accusing them of now JumpingOffTheSlipperySlope is just going to cause more problems. Sometimes lethal force when innocent lives are on the line to remove a threat permanently is needed.
* HatePlague: In the Holiday Special, the Sirens have been inducing these everywhere they go, causing people to argue and fight.
* HatesTheirParent: The sirens absolutely loathe their biological fathers, [[spoiler:the windigos Zephyrus, Notus, and Boreas]], and never refer to them as "father". Considering what they did to the trio's mothers, it is entirely justified.
* HearingVoices: The being that brought King Caesar to the past chimes in with both Monster X and Twilight. The former to keep him from killing a guard, and the latter to save her from a Gyaos.
* HeadbuttOfLove: For Xilians, this is the equivalent to a kiss. After about half a dozen chapters of CharacterDevelopment [[spoiler: Monster X gives one to Aria Blaze, which she afterwards escalates into a BigDamnKiss.]]
* HeelFaceTurn:
** [[spoiler: Xenilla whom, after his GoodAllAlong reveal, makes good on his promise to atone by protecting the Crystal Empire and helping save Rarity and company from Nightmare Godzilla.]]
** Moonbeam Glimmer after the below mentioned HeelRealization.
** [[spoiler: Starlight Glimmer after seeing what her dark path had driven her too, selflessly helps in the Nightmare Godzilla incident.]]
* HeelRealization:
** Moonbeam Glimmer realizes how wrong she'd been about Godzilla Junior [[spoiler: when he comforts her at her parent's graves and left some flowers, as per Fancy Pant's advice, on the headstones; showing he was completely different than she'd believed.]]
** Starlight Glimmer, Moonbeam's little sister, has her own. [[spoiler: She realizes what her reckless use of dark magic has caused ruin to both her's and others' lives after she let it consume her, especially after seeing how it made her hurt a young filly so much like a younger version of herself.]]
* HeroicSacrifice:
** The Fae involved in creating the Guardian Beasts were performing one, as the mana sacrificed to create them was needed for their continued survival. All this to safeguard the future when [[spoiler:Bagan]] eventually escaped his prison. Thankfully at least some of them gradually turned into humans as mana levels plummeted.
** [[spoiler:Junior]] attempts one when [[spoiler:Grand King Ghidorah arrives in Our Town, he sends Chibi and the others to safety while staying to fight the King of Terror despite knowing it's a fight he can't win.]] Thankfully subverted, as [[spoiler:Xenilla comes to help him and they kill Ghidorah with the help of Godzilla Senior's spirit.]]
** [[spoiler:Destroyah]] decides to [[spoiler:hold off Giranbo so the Cutie Mark Crusaders can get to safety, knowing without being powered up to her true form, she's going to die. Subverted, as the Crusaders and the spirits of Giranbo's victims manage to power her up to her true form.]]
* HiddenVillain: Combined with DramaticIrony. The ponies and heroic Kaiju believe that the malevolent kaiju at large in Equestria were simply brought there accidentally by the Dimension Tide. Unlike the reader, they have no idea that the apparent rogues are all part of a single malicious faction, and that there's a BigBad organizing them.
* HighAltitudeBattle: [[spoiler:The ClimaxBoss fight with Grand King Ghidorah ends up as one of these high up at the edge of the atmosphere. Xenilla and Ghidorah can fly, Junior has to spend most of the fight hanging onto them, but figures out a way to [[MythologyGag fly using his Atomic Breath]]. After destroying Grand King Ghidorah, the two are spent and nearly fall to their deaths but are saved by the rest of the Princesses, Mane Six, and the rest of the Kaiju Six.]]
* HoldingOutForAHero: Celestia starts to worry that she coddled her little ponies too much during her reign, making them depend too much on her or heroes to protect them and solve their problems.
* HopeSpot:
** Mothra beats the Hyper Gyaos and the lesser ones it brought with it, only for an even larger flock of them to show up and attack Canterlot.
** In chapter 29, [[spoiler: X and Aria defeat and seemingly destroy Enjin, unfortunately Bagan simply revives Enjin while X and Aria were distracted, allowing Enjin to successfully capture and absorb Aria]].
** Equestria Girls Rainbow Dash, while being chased down by [[spoiler:Monster X]] briefly taps into her element's powers and gains a burst of SuperSpeed. But just as she jumps to freedom [[spoiler:Kaizer X grabs her with a wave of anti-gravity, canceling out her speed by stopping her momentum.]]
** [[spoiler: Just when Aria is about to get Sonata's necklace back from an unconscious Sci-Twi, Wallflower arrives. Seeing her friend bloody and unconscious at Aria's hands, Wallflower blasts Aria with the Memory Stone. X takes the blast, but this allows Boreas to steal X's body]].
* HorrifyingHero: Canterlot's opinion of Godzilla during the Gyaos attack is mixed. Some cheered for him when he won, others were too focused on his brutal fighting methods and frightening appearance.
** This has led to half of the general populace to view Godzilla and the other kaiju as a threat.
* HospitalityForHeroes: Berry Punch gives Captain Frost and Godzilla Junior a free lunch after recognizing them at the pub she works at.
* HotInHumanForm: When Equestrians and Kaiju enter the Equestria Girls world, the [[HumanityEnsues human forms]] some obtain are quite attractive. Adagio and Lea both [[StatuesqueStunner become tall and shapely]] while Godzilla and Gigan gain [[HeroicBuild tough and muscular physiques]], if heavily scarred in some regard and Gigan still being a cyborg. Averted with Monster X, whom Aria notes looks remarkably average behind his mask, and Megalon, Anguirus, Sonata, and several others looking fairly unnoteworthy. [[spoiler: Subverted with Princess Celestia, who should have become an attractive older woman, but instead became a short teenager due to outside interference]].
* HourOfPower: While large amounts of magic can turn the kaiju back to their true forms, the same force of nature that turned them into ponies to begin with will drain off the additional energy and revert them. Lea and Twilight theorize that the charge can last somewhere between 20 minutes to three hours. Theoretically, this could be exceeded, but it could be dangerous to do so.
* HugeGuyTinyGirl: Godzilla Junior is alicorn sized in his unicorn form. Mariner Chibi Moon is an average sized eleven year old filly. As such she looks positively minuscule next to her sensei.
* HumanityEnsues: Just like ponies, kaiju turn into humans when they enter the Equestria Girls realm.
* HumanAliens: Subverted with Xilians and their subspecies, Mysterians. They do closely resemble humans in shape and size, but they are grayscale in color and have larger eyes and flatter noses. However they are still similar enough that, with some help from medical technology, they can have viable and fertile offspring with humans.
* HumansAreUgly: Monster X remarks that this about the inhabitants of the Equestria Girls realm. Ironically, thanks to his amnesia, he's forgotten that he used to be a [[HumanAliens Xilian]].
* HumansThroughAlienEyes: Upon visiting the Equestria Girls realm and seeing humans up close for the first time, Monster X can't help but comment on how bizarre they look.
* TheHunterBecomesTheHunted: The Hyper Gyaos, after being wounded and weakened by Mothra, gets chased by the rest of her flock when they smell her blood. [[spoiler: She's forced to kill them all in self-defense.]]
* HurtingHero: Several Equestrian and Kaiju heroes have their baggage. Godzilla Junior is hauling around SurvivorGuilt that his continued life being a constant reminder his father died, knowledge that his powers make it unsafe to be around his mother; and internally yearns to stop fighting and just live in peace. But, because of a strong sense of responsibility to keep fighting for those who can't, he knows any peace he gets is just a brief respite.
* HybridMonster:
** While "monster" is a bit of a subjective term, the Sirens were born between a union between two mermare princesses and two unknown fathers; creating a distinct trio of beings instead of the typical mermare reproduction. [[note]]Usually it goes that the daughters are normal mermares and the sons are the father's species[[/note]]
** Subverted as they are both in human form, but still played straight in terms of powers. [[spoiler: Aria Blaze continually using Kaizer Ghidorah as a power source gradually gives her more and more of his traits such as dark coloration and enhanced strength. This effectively makes her a siren/ghidorah hybrid.]]
* HybridPower:
** Mothra Lea is basically a Mothra/Battra fusion due to the circumstances of her creation. This not only results in her being ''much'' stronger than either of them with all of their combined powers, but the mixing of powers giving her unique ones neither of them have. [[spoiler:This is also true of her MirrorUniverse self Battra Lea.]]
** [[spoiler:Monster X/Kaiser Ghidorah is an Xilian/Ghidorah hybrid. The result is ''very'' powerful, but it's implied he's potentially strong enough for [[BigBad Bagan]] to take him seriously.]]
* IdiosyncraticEpisodeNaming: The chapter titles for ''Sound of Thunder" form a poem when combined.
* IKissYourHand:
** Xenilla kisses Fluttershy's hoof while expressing gratitude for sheltering him while he was unconscious.
** Rarity also tries to teach Anguirus to do this when instructing him on manners. Hilariously enough, he refuses, pointing out that she walks on those hooves.
*** Eventually Anguirus does do this to Ki Seong, albeit not directly on the hoof. Cue Seong squealing soon as he was out of earshot.
* IKnowYoureInThereSomewhereFight: [[spoiler:Gigan does this when Monster X transforms into Kaizer Ghidorah by recounting his various memories with the team. It works momentarily, but Grand King Ghidorah attacking undoes all his efforts.]]
* IdenticalTwinMistake: Well, more like "Alternate Self Mistake". It's only after she gets kidnapped and can explain herself that ''Princess'' Twilight Sparkle makes Monster X and Gigan realize they got the wrong "Twilight Sparkle" when the one they wanted must be the Equestria Girls' world's native Twilight Sparkle a.k.a "Sci-Twi".
* ImportedAlienPhlebotinum: One of the big [[ForWantOfANail nails in the Amalgamverse]]: [[Film/TheMysterians the Mysterians integrated into Earth's population]] and contributed their technology, granting a boost in nuclear technology and metallurgy that made things like Super X possible. After the Final Wars, humanity got to work on reverse engineering the various alien technologies left behind, granting them another huge boost which includes the ability to create Space Titanium (the stuff the Showa Mechagodzilla was made of) on their own.
* ImprovisedWeapon: After nearly getting run over by Aria and Sonata's car, [[spoiler: a human transformed]] Monster X picks up and uses a broken metal fence pipe as a bo staff to damage the car after jumping on.
* InconvenientSummons: When Twilight, Mothra and Luna cast a mass teleport spell in order to summon the remaining Mane Six and Kaiju, Rarity has the ill-fortune of being summoned whilst in the middle of a bath, bathtub and all.
* INeedAFreakingDrink: Pretty much everyone in attendance's reaction after the incident at Ponyville with the Destroyah swarm.
* InevitableMutualBetrayal:
** According to both WordOfGod and Ghidorah himself, had Grand King Ghidorah and [=DesGhidorah=] not been separated by the latter's sealing, one of the brothers would've inevitably killed the other, and at least Ghidorah is fully aware of it.
** [[spoiler:Bagan and Ghidorah are fully aware the other wants them dead, it's just at the moment Bagan is too strong for Ghidorah to kill and Ghidorah is too useful for Bagan to kill.]]
* InnocentInnuendo: Godzilla Junior doesn't realize half the things he said at a restaurant at Mako Island sounded like he had very lewd things on the mind. Not like the mermares around him minded really, even if they got the wrong idea.
* InsectoidAliens: M Nebulans are roughly man sized aliens that resemble bipedal cockroaches with two sets of arms, though with some traits like defined necks and fingers.
* InsistentTerminology:
** Xenilla insists on calling Cadence "Empress" no matter how many times she corrects him, since he can't wrap his head around the idea of a Princess ruling an empire. Poor Shining Armor, as a non-royal who married into the monarchy, can't get him to stop calling him "Consort".
-->'''Xenilla''': I'm eager to see this.. crystal empire of yours, Empress.\\
'''Cadance''': Princess!\\
(later)\\
'''Xenilla''': Considering the architecture of your land Consort-\\
'''Shining Armor''': Prince.\\
'''Xenilla''': -Prince Consort.
** King Ghidorah gets angry if anyone leaves out the "King" when addressing him.
* InsultOfEndearment: Aria Blaze and Monster X frequently show respect [[spoiler: and later romantic affection]] by insulting the other. The insulted sees right through it every time.
-->'''X''': Stubborn sea-witch.\\
'''Aria''': Worst alien.
* InsuranceFraud: The Flim-Flam brothers attempt to collect by claiming their Super Speedy Cider Squeezy 7000 was destroyed during Godzilla's fight with the Gyaos swarm, when it really broke down ''before'' the fight. Before they can make it to Canterlot, baby Destroyahs overwhelm their wagon and destroy it.
* InterspeciesRomance:
** Braeburn (Earth Pony) has a crush on Little Strongheart (Buffalo), though he hasn't told her yet.
** Blade Dancer (Pegasus) demonstrated interest in Godzilla Jr. (who is in a unicorn body), though he was oblivious and didn't know what to make of her flirting. Eventually, Princess Luna (alicorn) starts to show interest as well and Junior actually seems to return it.
** Anguirus (Kaiju-turned-Earth Pony) has a crush on Ki Seong (Kirin). A later chapter reveals she likes him too.
** Later on, Blade Dancer's attraction migrates to Xenilla (also a unicorn like his brother), and he on some level returns the feelings.
** Subverted with [[spoiler: Monster X and Aria Blaze after a long time. While both are ''very'' different species, a Xilian-Ghidorah hybrid and a Siren, they were both in human form.]]
* {{Irony}}:
** For a while, Princess Luna and Godzilla Junior are very wary around each other after the two's battle, even after the misunderstanding was cleared. She doesn't trust him at all and he think she means to do him harm. Guess who were the ''first'' two characters the fans shipped together with lots of fan art, enough to make a Website/DeviantArt group... [[spoiler: Later comes full circle and seems to be nudging to a mutual crush.]]
** Gigan being flabbergasted that his attempt to make Mane-iac fall to her death didn't work on account of ToonPhysics, considering {{Kaiju}} are probably the biggest violators of SquareCubeLaw in fiction.
** After seeing Godzilla in his true form, Blade Dancer is understandably thrown for a loop, and asks for reassignment so that she can clear her head away from him. She ends up in the Crystal Empire... and assigned to guard Xenilla, who looks almost exactly like Godzilla.
** The BigBad [[spoiler: [[EldritchAbomination Bagan]] ]] was sealed away beneath Attu Island, a real life island in the Bering Sea. Attu is uninhabited, but well renown for its bird watching and peaceful setting.
* ItsAllMyFault: [[spoiler: Mirror World's]] Xenilla blames himself for all the kaiju and people [[spoiler: Mirror World Godzilla Junior]] has killed over the years because he spared him as a child.
-->'''[[spoiler: Mirror]] Xenilla''': “All the souls I’ve murdered, for letting the child that grew into you live.”
* {{Kaiju}}: No really, read the premise and take a wild guess what's in the story...
* [[ManBitesMan Kaiju Bites Pretty Much Everything]]:
** Being a CombatPragmatist, Junior has no aversion to using his teeth when the cards are down; as both Luna and the gyaos found out.
** Runs in the family, Xenilla chomps down on a leg King Sombra was boxing him with, biting down hard enough to break the limb.
** {{Irony}}: [[spoiler: Princess Twilight starts out as the powerless and distrusted hostage of the Dark-Hunters and the Sirens. By the time she's released, she's effectively the leader of both groups]].
* TheJuggernaut: [=Nightmare/Shin=] Godzilla. Even in a pony form, he's extremely destructive with liberal beam use and is much more physical active than his film counterpart. Nothing Starlight Glimmer could do short of dropping a small manshion on him so much as phased him, and even then his reaction was to pause, grab it, and throw it at her.
* JustFollowingOrders: Monster X's reason for being a PunchClockVillain, his [[LaserGuidedAmnesia memory is so destroyed]] the only thing he can remember of his former life [[spoiler: as an Xilian guardsmen and soldier]] was following a master's orders.
* KarmicMisfire:
** [[spoiler: The Dark Hunters, accidentally mistaking Princess Twilight for her human counterpart (who was guilty of stealing Sonata's gem), savagely attack her and her human friends. Flash's car ends up being severely damaged, her friends are either severely hurt or in pain, and Twilight ends up being their captive]].
** [[spoiler: Sci-Twi [[NoHoldsBarredBeatdown getting badly beaten by Aria]] is this, [[DownplayedTrope sort of]]. She ''is'' technically guilty of harming Sonata, but she only did so after being horribly manipulated by a trio of psychotic Windigos. Nevertheless, ''she'' is the one who bears the brunt of Aria's rage]].
* KickTheSonOfABitch:
** Anguirus' CurbStompBattle against Garble's gang after Rainbow Dash helps soften them up and he reverts to his true form with her help. This is after Garble and company terrorized a summer campground and tried to eat several fillies and colts.
** The story goes out of its way to portray Grand King Ghidorah as a monstrosity. Seeing a SmugSnake like him getting '''absolutely trashed''' by a royally pissed off Kaizer Ghidorah was cathartic.
** After thoroughly establishing itself as absolute monster, Godzilla Earth's karma for killing billions of people and kaiju for no reason other than it could catches up to it ''hard''. [[spoiler:The Leviathan absolutely destroys it in their battle when it reaches full power and then spends the next few hours slowly dismembering it and eating it alive. According to WordOfGod, Leviathan demolished Anime Ghidorah as well.]]
** After a two-parter 2019 Halloween special goes out of its way to show Giranbo as a sadistic, child murdering, completely irredeemable villain, it's downright carthetic to see [[spoiler:Destroyah finally get the upperhand on her in the fight and end it by simultaniously drowning and ''dissolving'' her at the same time until there is nothing left.]]
* KilledOffForReal:
** [[spoiler:King Ghidorah, via the combined might of Godzilla Junior, Xenilla, and the spirit of Godzilla Senior with the help of Rarity, Harmony, and the souls released from Ghidorah by Junior.]]
** Giranbo at the end of the 2019 Halloween special down to her dimension collapsing in on itself after she's killed by [[spoiler:Destroyah.]]
* KingIncognito: Subverted with Godzilla Junior and the get-up he puts on when leaving Canterlot Castle. It does fully cover him and hide his features like his distinctly crooked horn, coloration, red sclera, and nasal ridge. However by now everyone in Equestria not only knows what he looks like but also about how he's tall as Princess Luna and built like a tank, so when they see a covered upon pony about twice their size walking by it seems a majority knows who it is. However they're smart enough to know that if "King" Godzilla was going to such lengths to cover himself, then it meant he didn't want to be bothered.
* {{Kirin}}: Ki Seong is a kirin from Carrea -- FantasyCounterpartCulture Korea -- who emigrated to Equestria some time back. She resembles an antlered ungulate dragon or, alternatively, a deer with dragon scales and a draconic tail.
* KissingDiscretionShot: [[spoiler: It is heavily implied Aria Blaze pulled X into a kiss, but the scene change and the unclear wording mask it a bit. Confirmed in ''The Bridge: Building Bridges''.]]
* LadyLand: Due to mermares being an all-female species, their capital at Mako Island is this by default aside from the odd visiting male seapony.
* LandingInSomeonesBathtub: Inverted. The mass teleportation spell to bring both the converted kaiju and Elements of Harmony to the throne room teleports in Rarity while she's still bathing, bathtub and all.
-->'''Rodan''': Oh look a white one.\\
'''Rarity''': ''*covering herself with shower curtain*'' WHAT IN THE NAME OF CELESTIA?!
* LaserGuidedAmnesia: Monster X can't seem to remember a single thing about him prior to getting to the state he is in now, outside of some nightmarish still images.
-->'''Marigold''': ''*as she's giving a tarp covered X a cloak for the rain*'' What's your name?\\
'''Monster X''': I cannot remember...
* LaserGuidedKarma: [[spoiler: Grand King Ghidorah apparently killing the xilian leader, Controller 011, is what caused her transformed husband, Monster X, to unlock his full power and turn into [[SuperPoweredEvilSide Kaizer Ghidorah]].]]
* TheLastDance: [[spoiler: Grand King Ghidorah's big attack at Our Town's plateau is revealed to be this. He considers himself fated to die soon and wants to fight Godzilla Junior one last time to give him peace.]]
* LastOfHisKind: [[spoiler: The Albino Hyper Gyaos, due to a combination of battles with Mothra (at the battle of the old castle), Godzilla (at Canterlot), and herself (in self-defense when they smell her blood and attack), had the rest of the gyaos killed off; and thus is the only remaining member of her species.]]
* LaymansTerms: Twilight Sparkle gives a MagiBabble-heavy presentation on why the Kaiju turned into native species when they entered Equestria and how they can change back. Destroyah manages to summarize it in one sentence.
-->'''Destroyah''': "So in a nutshell, we got thrown into ponyland, magic barrier made us ponylanders, we can go back to our real bodies but only temporarily and we need a pony to change us."
* LegacyCharacter: Two of the most notable ''Good Kaiju'' are this. Mothra Lea has a lineage including her mother, the Heisei Mothra, and dozens of other Mothra in the past. Godzilla Junior has both his adoptive father, Senior (the Heisei incarnation), and the 1954 beast all being his predecessors by the same name.
** Additionally in the human Equestrian world, Gaea Everfree is a title for the retainer of the Geodes when a times comes that they need protection. Decades ago it was a woman named Wysteria, and currently the title has passed to her daughter Gloriosa Daisy.
** The [[Franchise/SailorMoon mantle of the Senshi Guardians]] is passed down from the current incarnation to worthy successors as the former start to age out of their prime. The process is gradual so the current guardian can locate and train their successor adequately. Chibi Moon is destined to be her mother's successor as the Lunar Guardian when she's older.
* LegionOfDoom:
** The Intersteller Sentient Confederation, the team up of various hostile alien races, including Vortakk, Xilian, Nebulans, Leviathans, Millennium, Simians, Kilaak, and many more, who banded together to try and take Earth during Final Wars. In the story proper, Gigan, Megalon, and Monster X are the only present representatives.
** The BigBad has assembled a multiple-franchise-spanning army of evil kaiju. And if his resurrection of Sombra is anything to go by, MLP villains will be joining the roster as well.
* LetsYouAndHimFight:
** Early in the story, Princess Luna and the Royal Guard get into a fight against Godzilla Junior. It was all a big misunderstanding due to events outside their control. [[note]]Junior had crash landed inside Canterlot Castle and was knocked half senseless. When the guards, thinking he was an intruder, attempted to apprehend him to figure out how he got in there, Junior thought he was being attacked and fought back. Princess Luna walked in on the guards getting knocked around, assumed Godzilla was a villain, and attacked with Junior defending himself.[[/note]]
** This almost happens when Twilight meets Lea, due to mistaking her for Queen Chrysalis, but Lea defuses the situation quickly.
** Basically Harmony's plan to deal with Enjin. Lacking strong enough heroes to take on Enjin, she has to manipulate [[AntiVillain Monster X]] and the Sirens into fighting him. Helps that Enjin was targeting them to begin with.
** Megalon and Sonata Dusk figure out this is happening and defuse the situation when their groups run into each other.
** Monster X gets into a fight with Mothra Lea and the Human 5. [[spoiler: X, mistakenly thinking Twilight Sparkle is the one who stole Sonata Dusk's necklace when it was really Sci-Twi, tries to kidnap Twilight Sparkle and demand it back. Lea and company, also unaware of Sci-Twi's existence or involvement, just see X as a random attacker trying to hurt their friends.]]
* LightningFireJuxtaposition: The fight between Raiga and Agon in the opening to ''"Sound of Thunder"'', due to the former's presence summoning a thunder storm and the latter spewing napalm everywhere. [[spoiler: "Lightning" wins.]]
* [[LikeFatherLikeSon Like Mother, Like Son]]: In a special, we get some pretty heavy implications that Godzilla Junior's selfless, responsibility driven attitude actually comes from his adoptive human mother, Azusa Gojo. She not only constantly stuck up for her adoptive son during his days with her, but she had the selflessness and determination to use herself as a distraction to draw Trespasser away from the civilians; displaying NervesOfSteel even when cornered.
** Subverted in regards to Junior and his adoptive father and predecessor, Godzilla Senior. As brought up by [[spoiler: Azusa herself]], Junior inherited his father's unbreakable will and determination, but is still his own being and not destined to be a repeat of Senior because of his own uniqueness.
* LimaSyndrome: [[spoiler: The Dark Hunters and the Sirens gradually become very warm and friendly toward Princess Twilight, who is their captive. It's justified since the only reason they kidnapped her was because they mistakingly assumed she was the one who violated Sonata and stole her necklace. The only reason they kept her captive once they learned the truth is because they want to deter retaliation from Twilight's kaiju allies. Twilight herself wins them over with her honest sympathy toward Sonata's plight, and her desire to help them find her human self]].
* LockedOutOfTheLoop: Despite becoming friends with Gloriosa [[spoiler: the Sirens don't tell her that Twilight was kidnapped. Twilight herself doesn't either, choosing not to make waves]].
* LoveMakesYouCrazy / LoveMakesYouEvil: [[spoiler: Kaizer Ghidorah's insanity, out of control powers, and unending desire to kill Grand King Ghidorah was spurred by the latter forcing him to watch his wife die right in front of him. [[note]]Kaizer/X used to be a normal Xilian.[[/note]] ]]
* MacGyvering: The 1950s Mysterian attack mech, Mogera, turned out to be this. Instead of a dedicated war machine, it was actually a jerry-rigged defense robot and was originally a mining machine. It's comparable to slapping some armor and guns to a bulldozer to try and make it a tank.
* MadeOfIron: While they can be physically harmed, the ponified kaiju and immortal alicorns are ridiculously durable for a pony.
* MagicalProfanityFilter: Destroyah discovers ([[ItMakesSenseInContext upon accidentally dividing herself into a bunch of babies]]) that young Equestrians have a natural filter which prevents them from swearing. Which prompts her to furiously shout "FUUUDGE THIS BODY!!"
* MagicFeather: When Blade Dancer is evacuating citizens during the Gyaos attack on Canterlot, she encounters a young colt who is too scared to move. She has to let him wear her helmet to make him brave enough.
* TheMagicGoesAway: What happened to Terra (Kaiju home world) for the most part. 77,000 years ago they had TheFairFolk, Atlantis, and {{Magitek}}. Thanks to the BigBad, the number of modern Terran magic users can now be counted with a single hand.
** Judging from the dialogue, this is what said BigBad has planned for Equestria.
* MagicAIsMagicA:
** Equestrian magic is primarily driven by emotions and experiences such as love, friendship, hope, and will for good magic; and by hatred, greed, and wrath for dark magic. Terran magic by contrast runs off mana, a life energy all beings and planets have. The two cannot be used to counter each other. The one exception is [[spoiler:Bagan and Harmony, who's magic so so pure and vast they ''can'' counter each other.]] However, according to WordOfGod, it's entirely possible for an Equestrian to learn Terran Magic, and in fact they'd be rather adapt at it due to their natural mana reserves. It's eventually revealed that Light and Dark Magic, while both emotionally driven, are distinct from one another [[spoiler:to the point Bagan realizes Harmony can't be the nexus for Dark magic and sends Legion to Chrysalis to learn of it, discovering the nexus to be Grogar.]]
** In regards to Equestrian magic, some seals or magical implements created and operated by the magic of a certain somepony requires them or someone with magic akin to their own, such as family or a student, to affect them. Celestia's anti-changeling wards for instance can only be discretely turned off by her [[spoiler: or one of her students like Sunset Shimmer.]]
* MagicVersusScience:
** One could consider the fight between Luna and Godzilla Junior to be this from a point of view. One uses [[spoiler: and was created by]] magic and hails from a fantasy series. The latter is a mutation brought upon by radiation and is firing back with plasma beams.
** The magic all around areas like Equestria confuse Gigan's sensors, as they cannot quantify it. He compares it to trying to divide by zero.
** The Cloud Gremlins use dark magic to make their storm clouds too tough for a Pegasus to break. Rodan and Rainbow Dash apply the scientific principle of Thermal Expansion to weaken the clouds enough to break by lessening its density.
** Subverted in that the non-magically inclined characters usually have nothing against magic in itself, they just don't understand it.
* MakeMeWannaShout:
** Celestia putting her hoof down borders on this trope. And you thought Luna's Royal Canterlot voice was loud! When Celestia raises her voice, half the glass in the palace broke.
** Anguirus is in the same league when in his full form. His roar at point blank range is enough to rupture a dragon's eardrums and stun it.
* ManlyTears: [[spoiler: Seeing and seemingly futilely struggling to revive Aria Blaze's apparently dead body causes the typically stoic, controlled Monster X to start crying before he finally managed to restart her heart.]]
* MassiveMultiplayerCrossover: In addition to Toho's creations, numerous kaiju owned by other companies make appearances, ranging from Legendary Picture's Pacific Rim Kaiju and the Franchise/MonsterVerse’s Hokmuto, to Daiei's Gyaos and Legion; to Yonggu-Art's Yonggary. In addition, some of the fan made Equestrian characters from the story's readers and other groups on Fimfiction make cameos. Of the non-Toho and Hasbro appearances, [[Franchise/UltraSeries Land of Light giants]] and Equestrian versions of the cast of [[Franchise/SailorMoon Sailor Moon]] feasure prominently in the specials.
* MassSuperEmpoweringEvent: The creation of the Plasma Spark caused all the inhabitants of what was later called the Land of Light to mutate. They turned into a species of size shifting giants with the powers of flight, super strength, durability, surviving in a vaccuum, and energy beam projection to become the Ultra race. A family of the same race out in orbit unwent similar, but slightly different mutations, and became Zone Fighter and the Zone Family. Unlike most examples, a vast majority of the empowered choose to use their abilities for good. Only Belial and a few other bad eggs exist.
* MasterApprenticeChain:
** Godzilla Senior and King Kong taught Godzilla Junior who in turn taught Mariner "Chibi" Moon.
** Starswirl the Bearded mentored Princess Celestia who in turn mentored Sunset Shimmer and Twilight Sparkle. Starswirl also mentored Princess Luna who in turn begins mentoring [[spoiler:Starlight Glimmer post HeelFaceTurn]].
* MeaningfulEcho: Aria bequeathing her power to Monster X and then him later doing it for her are both punctuated with them saying to the other, "Don't lose."
* MeleeATrois:
** The battle that starts the fic starts with simply Godzilla and Xenilla's factions duking it out...then the aliens, human mechas, and other kaiju all pile in. By the end over 50 kaiju were duking it out.
** [[spoiler:This would be the inevitable result of both Bagan and Grogar both being unleashed at full power, as not only would the two be fighting the heroes and Harmony, but likely with [[EvilVsEvil one another]]. Flurry Heart's BadFuture shows the end result of this will not be pretty.]]
* MidseasonUpgrade:
** [[spoiler:Their partial Burning Form and Spiral Fire Ray for Junior and Xenilla, both of which gained during the Ghidorah Arc.]]
** [[spoiler:Monster X performs a SplitPersonalityMerge with Kaizer Ghidorah, giving him an upgraded golden form at the end of the Ghidorah Arc. He got a taste of this at the end of the Enjin Arc, but this is the completed version.]]
* MirrorUniverse: Tarbtano released a blog about a mirror version of Terra where the good kaiju are evil and vice versa, but noted it will probably not influence the rest of the story until the sequel. [[spoiler: Though it ''does'' play a major part in the spin-off, ''Sound of Thunder''.]]
* MomentKiller: [[spoiler:When Enjin is seemingly defeated, Monster X and Aria Blaze's tender moment is ruined when Bagan revives him and he grabs Aria.]]
* MonstrousCannibalism: The Gyaos here are far more mindless and primal compared to most Kaiju, and reflecting their animal like nature, will often turn to preying on weakened or injured members of their own flock to sate their insatiable hunger. The Albino Hyper Gyaos’s narration mentions that she had to fight off members of her own flock countless times whenever they try to attack her, [[spoiler: it finally comes to head after being heavily injured by Mothra in a fight and she’s forced to slaughter the remainder of her flock in self-defence]].
* MoodWhiplash: Happens to Aria Blaze and Monster X twice for different reasons.
** Monster X defeats Aria Blaze and has her completely at his mercy, leaving her no choice but to tearfully give up her siren heart necklace. [[spoiler: Before she does, Sonata Dusk manages to catch X completely off guard by nailing him in his (very human) [[GroinAttack joy department]], allowing the sirens to escape.]]
** See MomentKiller for what happened after the two teamed up and learned to like each other. The tone instantly shifts from tender and calm to frantic and dire.
* MookHorrorShow: Anguirus treats Garble and his gang to one once he returns to his true form.
* MoralityKitchenSink: Has characters from all over the spectrum. From the shiny white Mane 6 and Princesses, to the pitch black [[OmnicidalManiac Omnicidal Maniacs]] who revel in destruction. Among the heroes' allies are the incredibly destructive but noble Kaiju. Among the villains' forces are the Dark Hunters, who are also [[NobleDemon capable of heroism and decency]] when not working for the bad guys.
* MoralityPet: The Cutie Mark Crusaders are becoming this to Destroyah. While the latter party barely pays them any attention, the fact [[AxCrazy whom we are talking about]] has since never tried to harm them speaks volumes. They even managed to, much to all the kaiju's surprise, calm down the giant mare right when she was about to throw it down with Celestia.
* MortonsFork: Gigan, Irys, and Megalon get into one [[spoiler: once they learn the truth of Monster X's forgotten history and what spurs the transformation into the extremely dangerous and out of control Kaizer Ghidorah. If they tell Monster X about what happened either he'll break under the knowledge of what his evil half did and transform into Kaizer. If they don't tell him and he finds out, he'll feel betrayed and turn into Kaizer. And considering his wish to Bagan was to have his memory restored, he's ''is'' going to remember eventually...]]
* MuggingTheMonster: Aria Blaze detects a being emitting a great deal of hatred and rage and seeks it out to feed. Only it turns out to be Kaizer Ghidorah, who is so powerful that even with the power boost she gets from feeding on his emotions, all she can do is run.
* MultipleChoicePast:
** Defied with Xenilla. Unlike the movie which gives two origins for Spacegodzilla a.k.a Xenilla, the Amalgam'verse continuity and the origin scene shown explicitly name Mothra Lea's mother as the unwitting culprit when she accidentally carried some of Godzilla Senior's cells into space and Biollante had nothing to do with it.
** Giranbo is so ancient and has such a spotty record that it's unclear exactly what she was, an archdemon or extremely powerful fae are two possibilities.
* TheMultiverse: Many of the MLP ExpandedUniverse, such as the ''Power Ponies'' and [[WesternAnimation/MyLittlePonyEquestriaGirls Equestria Girls]] realms are present, and even targeted by the BigBad in addition to the main realm, Equestria. Additionally all Equestrian Worlds, and even the kaiju homerealm of Terra, have their own MirrorUniverse.
* MundaneSolution: Situation? An abandoned ship washes aside on the mermare capital of Mako Island with clear signs something weird happened to the crew. The mermares contact Princess Celestia to let her know something's up and want to get the boat back to them. Problem? The magical storm surrounding Mako makes it excessively difficult to pilot a tow ship to it and is strong enough to keep out all but alicorn-magic-enhanced levels of flight. Princess Celestia's solution? The one-way barrier is only on the surface of the water so just send Godzilla in full kaiju form to swim under it and having him pick up the boat and walk out.
* MundaneUtility: How does Captain Blueberry Frost first put Godzilla Junior's strength to use? Betting on him in a Tug'o'war contest.
* MusicSoothesTheSavageBeast: When under attack while trying and failing to mind control him, Aria Blaze unconsciously alters her tune and briefly calms down Kaizer Ghidorah with a new melody.
* MyKungFuIsStrongerThanYours:
** Aria Blaze studied martial arts, which allows her to briefly contend with Monster X. However, he notes that a mere student cannot hope to beat an elite soldier with training and battlefield experience. [[spoiler: She later takes up lessons from him during the siren's EnemyMine alliance with X and shows great improvement.]]
** King Sombra boasts that he was taught magic by the dark sorcerer Grogar himself, so no magic training Princess Cadance has could possibly compare. Cadance proves him wrong by getting the advantage and boasting she was taught magic by Princess Celestia.
* MyMasterRightOrWrong: Slight Deconstruction. When Monster X confesses following orders is just about the only thing he can ever remember doing, Aria Blaze quickly notes how little he knows about his new master, the BigBad, and this could lead to trouble.
* MySignificanceSenseIsTingling: As alicorns are more in tune with the dimensional barrier being breached; Twilight, Cadance, Luna, and Celestia all get headaches from the Kaiju's arrival. Cadance got it doubly so as she was pregnant with Flurry Heart at the time.
* MysteriousParent: ''The Eclipse Times'' confirms what was implied since chapter 17. [[spoiler: Harmony is Celestia and Luna's mother.]]
* MythologyGag:
** As a joke on their companies' rivalry, the Toho kaiju use the word 'Daiei' in place of the word 'hell'; and the Daiei kaiju use 'Toho' for the same word.
--> '''Godzilla''': Lady, what the Daiei are you doing?
** [[spoiler: Bagan’s history in this fic as a former guardian of Earth alongside a previous incarnation of Mothra and Battra is a nod to the cancelled Mothra vs Bagan movie where Bagan was an ancient protector of the Earth who tried to wipe out humanity. In fact all of Bagan's traits are effectively an amalgamation of all the scrapped movie versions mixed with the game version's power.]]
** Anguirus and Varan's status as Guardian Beasts is likely one to the original [[Film/GodzillaMothraKingGhidorahGiantMonstersAllOutAttack ''Giant Monsters All Out Atack'']] script, with those two having been replaced by King Ghidorah and Mothra for the final film; thus their status in the story is resuming the original intended one.
** Mothra Lea playfully biting Godzilla Junior's tail is a nod to the fact nearly every continuities' incarnation of Mothra has bitten their continuity's Godzilla's tail for one reason or another.
** Princess Celestia was apparently offered the title of "Queen" during her 1,000 year solo rule, granted she turned it down as to not appear too high above the populace and seem unapproachable. During production of Friendship is Magic, she ''was'' going to be a queen but ExecutiveMeddling lead to the change to avoid the GodSaveUsFromTheQueen trope association.
** Blueblood is given the full title of "Archduke Prince Heir Apparent". Similar to Celestia, Prince Blueblood was going to be "Duke Blueblood", but was changed. The story makes sense of both of the titles by calling him an archduke, which is the equivalent title to a non-ruling prince.
** This isn't the [[Film/GameraGuardianOfTheUniverse first time]] we've seen a Gyaos get blinded by camera flashes.
** Monster X's opening combo against Enjin is the same opener he used on Godzilla in ''Film/GodzillaFinalWars''.
** Gigan and Monster X's handshake stand-in of crossing their forearms and bumping them is identical to a gesture between Gigan and Megalon in "Godzilla vs. Megalon".
** Despite not appearing in any movies, Enjin is not an original character. The original version of Bagan proposed for the 1984 Godzilla reboot had Bagan being composed of three shapeshifting monsters fused together, Enjin being one of them. Mizu and Doragon are the other members of the trio.
** When Mirror!Gigan loses an arm fighting the Malice Mares, he makes a replacement made of twin chainsaws just like the upgraded form from ''Film/GodzillaFinalWars''.
** Rainbow Dash's mother, Rainbow "Radiance" Dash Senior, is basically [[WesternAnimation/MyLittlePonyG3 Generation 3 Rainbow Dash]]. Her attire is a grown up version of the "Newborn Cuties" incarnation from Generation "3.5".
** Megalon does Godzilla's infamous tail-slide dropkick from his movie in the battle against Grand King Ghidorah.
** [[spoiler:Film/ShinGodzilla was [[FanNickname given the name "Nightmare Godzilla"]] before his official name was given. Shin Godzilla makes an appearance in this story as the result of ''Nightmare'' possessing Godzilla.]]
** [[spoiler:Junior uses his [[Film/GodzillaVsHedorah Atomic Breath to fly]] against Grand King Ghidorah. Rutherford's reaction to it is even the DVD chapter for it modified to fit the Yak's speech pattern.]]
** ''Eternal Dilemma'' revealed all three prior generations of My Little Pony existed in some form or another, suffering cataclysms that ended the three previous eras. The modern Generation 4 inhabitants are descendents of the older three generations, such as [=G4=] Spike being heavily implied to be a direct descendent of [=G3=] Spike who in turn was a descendent of [=G1=] Spike.
[[/folder]]
[[folder:Tropes N - Z]]
* NameAmnesia: X has amnesia and his masters only saw him as a weapon; [[NoNameGiven so they never named him]]. They would [[YouKnowTheOne use X as a designation]] so they knew what they were talking about. After giving up a chance to recover his memories, since that risks unleashing his SuperPoweredEvilSide Kaizer Ghidorah, he declares that [[MeaningfulRename from now on, "X" will be his true name]]. [[spoiler: For the record, his original name was [[YouAreNumberSix Praetorian Guard 094]].]]
* NeckSnap:
** [[spoiler: Human]] Kaizer Ghidorah does this to Enjin. Due to Enjin's HealingFactor it doesn't kill him, but does slow him down long enough to be thrown into a freezing river and end up at the bottom of a lake.
** Queen Beryl finishes off a weakened Golden Glow this way.
* NiceJobBreakingItHero: Hero is a bit of a strong word to describe the Sirens and the Dark Hunters, but their plans to [[spoiler: find Sonata's attacker and get back her gem fail horribly]].
** [[spoiler: By kidnapping Princess Twilight and refusing to let her go, they end up bringing the Terran Defenders into the conflict, and awaken Mothra Lea's dark side]].
** [[spoiler: Aria needlessly brutalizing Sci-Twi out of fear and revenge only drives her to fearfully embrace Zephyrus' Wendigo magic, transforming her into an even more horrific form of Midnight Sparkle. Even after Aria and X win the fight against Frostbite Sparkle, she contintues to beat on Sci-Twi, convincing Wallflower that they are monsters. This drives her to use the Memory Stone against X, allowing Boreas to possess X's body]].
** [[spoiler: Gigan vengefully attacking Godzilla derails the plan to defeat the Windigos and creates even more hostility and violence]].
** In the end [[spoiler: their scheme becomes AllForNothing: they fail to retrieve Sonata's gem, Aria has to retreat from the possessed X while burning with uncontrollable rage, and Adagio and Gigan walk away not only hurt, but crushed by regret for inadvertantly giving the Windigos even more power]].
* NiceJobFixingItVillain: Destroyah pulls this, albeit completely unintentionally, when she attacks the [[spoiler: Timberwolf pack]] about to kill the Cutie Mark Crusaders.
* NinjaPirateZombieRobot: When Megalon goes Trick-or-Treating with Pipsqueak, he wears a pirate outfit despite being a alien cyborg beetle.
* NoBisexuals: Averted. While not put at the forefront, several bisexual or possibly homosexual characters are mentioned in passing with no negative connotations. One of them, Blade Dancer, is arguably the main secondary heroine of the story.
* NoHoldsBarredBeatdown:
** [[spoiler: Aria Blaze flies into a rage after seeing Monster X bleeding, transforming into a Kaizer Ghidorah-like form and utterly ''trashing'' Enjin alongside a recovered X.]]
** [[spoiler: She later does this to Sci-Twi when she catches her, enraged over what she did to Sonata. Had Zephyrus not intervened, Sci-Twi would've been knocked out cold]].
* NoSocialSkills:
** Anguirus knows a lot about civilization, but not manners or etiquette. Because he [[BlatantLies obviously doesn't enjoy]] being around Ki Seong, he goes to Rarity to learn some to try and fit into society while stuck there to avoid trouble.
** Godzilla Junior similarly has a bit of a problem. While he is aware of a lot of modern life from observation and presumably second hand information from Lea, he has no clue what flirting or courting is. As such things of the sort either fly over his head completely or he grossly misunderstands them; such as thinking ponies and humans gave each other flowers as a edible treat since they are herbivores/omnivores.
* NobleDemon:
** Xenilla, when compared to his second in command. He has his goals, but won't act out for the sake of destruction unless he sees the need too. He at least had the decency not to blow up Fluttershy's cottage upon crash landing inside it. [[spoiler: Being on the receiving end of 'the stare' helps.]]
** Monster X plays this trope in spades, [[spoiler: killing several of Legion's soldiers for attacking a pony who couldn't hope to fight back, and even bandaging said pony up before ditching him]].
* NoodleIncident: On both franchises no less. The alien kaiju reference but refuse to talk about some sort of "Radio incident with the Kilaaks", and the Equestrians bring up some destructive event only referred to the "Chocolate Milk accident". What exactly happened isn't mentioned.
* NoSelfBuffs: Despite the fact that some of the displaced kaiju can use Equestrian magic, they cannot use that to charge up into their kaiju forms, the benign magic that triggers the transformation must be external in nature.
* NoSell: Dragons would have more luck shooting Anguirus with a water hose than they would using their fire. [[spoiler: Displayed spectacularly by Anguirus casually walking through a massive cone of fire completely unfazed. He IS a 'fire monster' after all.]]
* NotDistractedByTheSexy: Godzilla doesn't ignore Blade Dancer's flirtatious actions. He just has no idea what the context is and just gets confused as to what in the world she's doing.
* NotSoDifferentRemark:
** Aria Blaze and Monster X come to something of an understanding during the former's training with the latter upon finding out both are victims of circumstance and are wanting back something they've lost. Both have a concept of "home" they're missing and barred from getting back, Aria can't return to the sea, her literal home, because of her human form and Monster X can't return back to his metaphorical home due to his lost memories.
** The non-canon April Fools day special defends [[spoiler:WesternAnimation/MyLittlePonyG3 when Megalon, Sonata, and Pinkie Pie meet the G3 Pinkie. Both 'Pinkie Pies' hit it right off and Megalon points out that for all of its differences, G3 still had redeemable factors G4 carried on with.]]
** While at first annoyed by Mariner Chibi Moon, Junior comes to realize she very similar to himself as a child, and her idolizing him is very similar to how he once acted towards King Kong. This results in him volunteering to mentor her in the powers she copied from him.
* NotTheIntendedUse: The Siren Heart necklaces can't be removed by any outside force except their wearer, as Monster X found out when he tried to take Aria's and got a invisible blow back force. [[spoiler: He later uses this to revive Aria after Enjin choked her into unconsciousness, making a lunge at her necklace and using the blow back to jostle her awake.]]
* NotWhatItLooksLike: While Mothra Lea is communicating with him telepathically, Rodan presses Rainbow Dash's forehead to his so that she can join the conversation. When it is over, the two are incredibly embarrassed when the bystanders, including Rainbow's parents, think they were doing something intimate.
* OOCIsSeriousBusiness: In Chapter 44, Flash Sentry is very concerned about Sunset Shimmer's situation. It is enough Mothra Lea notices that even while he is kindly speaking to Twilight and she is obviously crushing on him, his mind is elsewhere.
* OfficialCouple:
** Monster X and Aria Blaze become this over the course of the Enjin arc.
** Blade Dancer and Xenilla become this some time between the Crystal Empire arc and the Ghidorah arc.
** Anguirus and Ki Seong become this after [[spoiler: the death of Jeog.]]
** After a lot of [[TrollingCreator teasing both in and out of universe by Tarbtano,]] Godzilla Junior and Princess Luna become this in chapter 38.
* OffscreenMomentOfAwesome:
** This story's version of ''Final Wars''. Godzilla, Mothra, Anguirus, Rodan, Gamera, Yonggary, King Caesar, Raiga, Baragon, Gorosaurus, Manda, Gomora, and Varan [[spoiler: AND Xenilla]] vs. Grand King Ghidorah, Gigan, Monster X, Orga, Hedorah, Megalon, Gyaos, Mechagodzilla; and the alien invasion fleets.
** Ki Seong's restaurant gets invaded by several Destroyah babies. The next time we see her, she's somehow tamed them.
* OhMyGods: Both casts frequently use their franchise creator's names.
-->'''Godzilla Junior''': "Good Tanaka!"
* OlderThanTheyLook: Quite a few characters on both sides. The only protagonists not being a case of this are Godzilla Junior, the Mane 6, Xenilla, Destroyah, Mothra Lea, and Blade Dancer.
** Princess Celestia and Princess Luna are each roughly 1,020 years old, though their rapid aging rate as fillies makes it hard to determine exactly how much older Celestia is. Queen Chrysalis, Discord, and Tirek are all a decade or two older.
** [[spoiler: Princess Cadance is also over a millennium old chronologically, but was frozen in time for over 98 decades as a baby so she's only physically in her late twenties.]]
** All of the Guardian Beasts are over 70,000 years old with Anguirus being the oldest. Due to a combination of their magical origin and being sealed for most of that time, they're all still in their prime.
** The Sirens are technically over 1,000 as well, but the magical portal Starswirl sent them through to the human world was also a time portal to the present; meaning they are only physically in their twenties. They can also pass for high schoolers, allowing Aria and Adagio to infiltrate Canterlot Highschool.
** Grand King Ghidorah's age is vague, but his inner monologues show he is at least 100 million years old.
** All of the Dark Hunters except Irys. Kaizer Ghidorah a.k.a Monster X is 370 years old, Gigan is over 200 years old, and Megalon is roughly 100 years old.
** [[spoiler: Bagan, Harmony, and Grogar are all billions of years old.]]
* OneGenderRace:
** Both the Mothra and Gyaos species are made up of parthenogenic females. This results in the male Mothra Leo[[note]]protagonist of at least two of the Rebirth of Mothra films[[/note]] being [[GenderFlip genderflipped]] into Mothra ''Lea'', who is otherwise identical as a character (WordOfGod confirms all of this). Tarbtano stated that since the species [[JustifiedTrope reproduces asexually]], it would make more sense biologically for each offspring to be a clone-daughter to the mother. On top of that, Mothra is nearly always portrayed as and thought of as a female kaiju anyway.
** Mermares are all female, and reproduce by mating with other species. If the child is male, it will be the father's species with some Mermare traits. If the child is female, it will be a Mermare with some of the father's traits. The Sirens were born from an unknown union of two mermare princesses and two unidentified males that was never replicated. [[spoiler:Turns out to be the ''three'' Windigos.]]
* OneSteveLimit: Subverted overall. Multiple characters with the same name show up, but usually with another moniker to distinguish them.
** There are three Godzillas in the story verse at the same time: all of the Heisei timeline's Japanese Godzillas and both American Godzillas. However, only the original Japanese one is named Godzilla, while the other two from the American 1998 and 2014 movies are named Zilla and Gojira respectively. Justified, however, as they're ultimately three different species that just happen to look similar. There have also been three Japanese Godzilla's in the backstory, just not all at the same time; the original from 1954, his son "Senior" was active from the 1980s and 1990s, and then Senior's adoptive son "Junior", who is the current incarnation.
** Subverted as well. The story also has two King Ghidorahs in its backstory, the planet killing OmnicidalManiac and the future people's bio-weapon who was based off the original. Both are referred to as King Ghidorah, with the space monster being called Grand King Ghidorah to tell them apart.
** Mechagodzilla is another subversion. While the Millennium Mechagodzilla is referred to as Kiryu, the other two exist and are both called Mechagodilla.
** Like the Godzillas, there have been multiple Mothras over the eons with each successor being the last one's daughter. It is somewhat subverted when it appears that, as with the case of the current one Mothra Lea, each one had a distinguishing name with "Mothra" almost being more of a title.
** The Heisei Rodan and the Rodan who appears in the story are separate characters, but both called Rodan due to looking similar.
** There is also more than one Rainbow Dash. The Rainbow Dash we all known from the show is Rainbow Dash ''Junior'', an updated version of the Generation 3 Rainbow Dash being her mother.
** Years before Starlight Glimmer appeared, there was a male member of the Royal Guard singularly named Starlight.
* OurDragonsAreDifferent: Of several varieties no less.
** Equestrian dragons are as they appear in the show. They can mature naturally as well as experience rapid growth caused by excessive greed, at the cost of becoming rabid. Greed-growth isn't reliant on just material greed and can be caused by craving anything from prey to revenge. Most aside from Spike are a bunch of jerks.
** Grand King Ghidorah, Des Ghidorah, and Kaizer Ghidorah are alien lifeforms that just happen to resemble dragons. They are some of the most powerful kaiju, all have three heads, two tails, and wings. Des Ghidorah and Kaizer Ghidorah are six limbed quadrupeds whereas Grand King Ghidorah has only four. Each can travel through space and manipulate gravity with various unique powers.
** While unseen, dragons are mentioned as having existed on Terra in the past, being animalistic versions of TheFairFolk. When magic largely was extinguished across the planet, they reverted into normal animals like how fair folk humanoids turned back into humans, dragons turning back into crocodiles and snakes.
* OriginsEpisode:
** Chapter 19 shows us the origin of Xenilla and Princess Cadance.
** Chapter 24 shows us the origin of Monster X.
** The Mother's Day and Father's Day specials double as ones for Godzilla Junior and Princesses Luna and Celestia respectively.
** Chapter 38 shows us the origin of King Sombra and Starlight Glimmer.
* OurHippocampsAreDifferent: There are three kinds of merhorse variants in the setting.
** Seaponies are the smallest and simplest, resemble oversized seahorses and are ruled by King Leo in Aquestria.
** Mermares look like a hippocampus with fins for forelimbs, but using the magical charms they wear around their necks they can take on the appearance of a terrestrial equine with a wet mane. They do this to either work above sealevel or, given that they are an all-female species, find a mate. Any offspring born from such unions will overwhelmingly be female and Mermares themselves, with any rare sons being the father's species. Most of them used to be nomadic, but those in the Eastern ocean amassed at Mako Island and named the founder of that island the first queen. Since then they have lived under an elected monarchy, with the current ruler being an old friend of Celestia and rival to Luna named Queen Maui.
** Sirens also resemble hippocampi and were born from the union of three windigoes forcing themselves upon a pair of mermare princesses. They specifically draw power from song magic by inducing certain emotions in people that listen to their singing.
* OurMermaidsAreDifferent: Equestrian mermares are a distinct, [[OneGenderRace all female species]] inhabiting the Celestial and Lunar seas on either side of Equestria. The Lunar sea ones are primarily nomadic and live in small pods, whereas the Celestial pods have congregated together under a queendom with Mako Island as their capital. Bits of various real life Mermaid lore was used, so their behaviors can vary wildly. The Sirens are distinct trio of individuals which are the result of a crossbreeding of two mermare princesses [[spoiler:being captured and raped by three windigos.]]
* OurSirensAreDifferent: Besides the Dazzlings, Raiga ends up as one for her new Equestrian form, though has no clue how the singing magic works. There's also mention of the Dazzlings; MirrorUniverse counterparts, called the Muses, who were apparently a benign version of the trope.
* OutsideContextProblem: A key reason the Princess Celestia organizes and alliance between the displaced six kaiju and Equestria is because any other monsters brought over from Terra would be this to Equestria's heroes. The kaiju both have experience dealing with species or individuals and can identify indications of their precense. It also notes the Equestrians are required to help the six kaiju do this task and native Equestrian threats can catch them off guard without proper know-how from the ponies. Specific examples include...
** Xenilla can sense ''something'' is lurking about but lacks magical knowledge or historical awareness, so he consults a mage and historian, Key Ring, as well as a guardsmare, Blade Dancer, to figure out [[spoiler:King Sombra had returned.]]
** Gigan is caught off guard by the two Power Pony world's liberal use of ToonPhysics, meaning his typical strategies of "Beat it to death" or "Gut it" don't work on Mane-iac.
** Starlight Glimmer's AntiMagic dark spells which can seperate magic from the user are quite potent on Equestrians, but her reliance on it comes back to bite her against an enraged and non-magic using Godzilla.
* PaleFemalesDarkMales: Zig-zagged with the over all designs of the transformed kaiju. While some of the female kaiju do have a dark colored coat (Destroyah), all of the male kaiju are predominantly darker colored (Godzilla, Anguirus, etc.); whereas the female roster have brighter and lighter colors (Mothra).
** JustifiedTrope with Irys, she's albino. If she was a normal gyaos she'd be reddish-brown.
* ParentalSubstitute: Multiple examples both for the Terrans and Equestrians and towards each other.
** Azusa Gojo [[note]](later Azusa Aoki after she married)[[/note]] raised and is still seen as the mother of Godzilla Junior after he imprinted on her upon hatching, even adopting her surname when it's suggested he take one. She accepted the imprinting and happily refers to him as her son even to this day.
** The Equestrian Founders, namely Starswirl the Bearded, raised Princess Celestia and Luna after they were discovered in the Everfree Forest. Starswirl especially was seen by the sisters as their father, even to the point one reason Luna became Nightmare Moon was she incorrectly felt he favored her sister as a daughter.
** The Burst Family fostered Starlight and Moonbeam Glimmer after their birth parents were killed in a dragon attack when Moonbeam was a child and Starlight was a toddler.
** Later on after being his student for awhile, it's implied Mariner Chibi Moon sees Godzilla Junior as a father figure given her family is a continent away and not able to visit.
** It's pretty heavily implied the Crusaders have begun to see [[spoiler:post HeelFaceTurn Destroyah]] as a motherly or aunt-like figure, especially Scootaloo.
* PartialTransformation: The Kaiju turned Equestrian characters retain some physical traits and their [[spoiler: now diminished]] powers. This is shown best by Destroyah (now massive pegasus mare) still having her horn, causing many characters and readers alike to mistake her for an alicorn.
** [[spoiler: Played up with horrifying implications when more kaiju are sent to Equestria with fewer and fewer changes.]]
* {{Permafusion}}: [[spoiler:Bagan]] turns out to be a permafusion between three ancient kaiju; Doragon, Mizu, and Enjin. While they can summon these components into battle, these aren't the components themselves but rather mindless avatars and extentions of [[spoiler:Bagan]]'s will.
* PiggybackCute: Not romantic example with Chibi Moon frequently riding around on Godzilla Junior's back [[HugeGuyTinyGirl or head]] or the Cutiemark Crusaders seating themselves on Destroyah's wings and back.
* PhysicalGod:
** The Alicorns of Equus all qualify, but Celestia and Luna more than anyone else. It is shown they are often holding back their full power but will drop it when pressed. Godzilla Junior was able to deadlift multiple royal guards in full armor and toss them around during a misunderstanding, yet an enraged Princess Luna was able to fight him on physically even terms.
** While not explicitly gods, Discord, Queen Chrysalis, Lord Tirek, and King Sombra all qualify, each being so powerful they can conquer kingdoms in an afternoon. The only Equestrians on par with them in a head-on confrontation areexperienced alicorns or high end kaiju-in-Equestrian bodies like Xenilla. [[spoiler:They're all also students of [[GodOfEvil Grogar]].]]
** Mothra Lea, and by extension Mothra and Battra before her, is explicitly referred to as a deity in her bio, and more than lives up to it.
** In terms of sheer power, higher tier kaiju come off as this, including Junior, Xenilla, Grand King Ghidorah, and [[spoiler:Kaizer Ghidorah.]]
** [[spoiler:The three Magic Nexuses, Bagan, Harmony, and Grogar, are all this in spades. Each are so immensely powerful only one of the others is powerful enough to actually have a chance of beating them in a straight fight and could easily kill ''Grand King Ghidorah'' if they so chose.]]
** [[spoiler:The Leviathan fusion is explicitly called the [[DestroyerDeity God of Destruction]] and is on the same tier as the Nexuses.]]
* PiecesOfGod: [[spoiler:The Elements of Harmony and Rainbow Powers are revealed to have been created by Harmony from part of her divine power at some point in the past, and thus are this trope. It's implied Celestia and Luna may be another piece. WordOfGod implies Harmony reuniting herself is a GodzillaThreshold she can do but will only do in the most dire of situations.]]
* PillarOfLight: Happens whenever one of the transformed kaiju get hit with enough magic to return to their original form. Often bright enough to light up the night and be seen miles away.
* PlanetTerra: The world of kaiju and humans is referred to as Terra and the inhabitants are called such. For example the Anteverse kaiju that come from the rift portal are invaders from another realm, but the likes of Godzilla and Mothra are called Terran kaiju.
* PlayAlongPrisoner: Like brother like brother apparently.
** When Junior is getting escorted out of the dungeons by a large number of guards while wearing large manacles and a thick muzzle, it’s made abundantly clear that he could break out and escape anytime he wants but simply goes along with it, at least until a particularly obnoxious guard begins antagonising him repeatedly prompting Junior to [[BreakingTheBonds snap his restraints, burn through the muzzle]] and knock said guard into a wall before promptly holding out his hooves to be chained again. He later explains that he didn’t break out earlier because of the chance innocents might get caught in the crossfire and also because he was starting to suspect the whole brawl earlier happened due to a misunderstanding. Later, after seeing all his allies in the throne room, he promptly breaks out of them again by accident to run up to them.
** Xenilla allows himself to get arrested by the Crystal Empire so that [[spoiler:he'll be in the perfect position to ambush King Sombra. However, while he was strong enough to easily break free, he didn't anticipate that the prison would have an alarm system, so he needed Blade Dancer's help to escape without alerting Sombra.]]
** Grand King Ghidorah reveals that he was ''never'' enslaved by any of the races who he's worked for. He was playing along the entire time for his own amusement.
* PowerCopying: Sirens can take on traits of whoever they've sung to, especially if there is a strong emotion involved; platonic or romantic. Aria Blaze takes on traits similar to Monster X and Kaizer Ghidorah, [[spoiler:especially after they fall in love and thus her love ballads are much more potent on him,]] gain gravitaional control powers and enhanced physicality. Adagio Dazzle ends up with an enhanced form that is a gestalt of energies copied from the Rainbooms, Gaea Everfree, Monster X, and Gigan.
* ThePowerOfFriendship: While ''friends'' is a big stretch, [[spoiler:it takes Princess Cadance and Xenilla teaming up and launching a combined assault to defeat King Sombra.]]
* ThePowerOfHate[=/=]ThePowerOfLove: The power source for more advanced magic spells is partially emotion based. Good magic uses will, love, happiness, and hope. Dark magic, on the other hand, is fueled by greed, hatred, and wrath.
** Siren magic uses the former in their songs, acting like a HatePlague. [[spoiler: Though Aria Blaze has discovered a new type of enchantment song that seems to use the latter, having a calming effect on the listener.]]
** [[spoiler:Xenilla manages to channel his love for his allies into a brief power boost sufficient to, for a brief moment, overpower Grand King Ghidorah and position him for Junior to run through on his spines.]]
** A CentralTheme of the story is about which of these is truly stronger. The recurring answer is that Love is.
* PowerTrio: The core group of benign kaiju was this back on Terra:
** TheLeader: Godzilla junior
** [[TheSmartGuy The Smart Girl: Mothra
** TheLancer: Anguirus
** Later, TheRookie: Rodan
* PowerfulAndHelpless: [[spoiler: Aria takes on her Kaizer form to fight the Boreas-possessed-X...but realizes that the only way to win would be to kill X's body, something the psychotic Boreas would be willing to do himself. Having no other option, Aria is forced to make a ''very'' bitter retreat]].
* PragmaticHero: [[spoiler: Princess Twilight ends up willingly working with her kidnappers and treating them kindly. Not just out of the goodness of her heart, but because she realizes it is the best way to defuse tensions between them and her friends]].
* PrayerIsALastResort: Megalon, despite not really knowing what he's doing, bids a prayer to his master [[spoiler:to save Gigan's life when his brother is teetering on the edge of death, citing their loyalty to it and that Bagan is a god; thinking a god can do the impossible.]] Most assuredly ''not'' PlayedForLaughs.
* PregnantBadass: It's later confirmed Princess Cadance has been pregnant since before the story started, and she still takes on King Sombra to defend the Empire. Granted she's early term and wasn't even aware of it until after a medical exam.
* PrettyPrincessPowerhouse:
** Crash through her roof, beat down half her and her sister's guards; and you'll soon be questioning why Princess Luna even needed guards in the first place. [[spoiler: She actually managed to knock out the ponified Godzilla before fainting from her injuries.]]
** Celestia is even stronger than that. 1,000 years more experience and a [[WonderTwinPowers proximity based power boost]] from Luna give you enough strength to floor six fighting Kaiju-Ponies in one burst.
** Cadance shows this herself, personally fighting Sombra alongside Xenilla.
** Twilight Sparkle defended the Tree of Harmony admirably and even slew some of the Gyaos.
* PrincessesRule: Equestria's extensive use of this is lampshaded when Xenilla points out that, as ruler of the Crystal Empire, Cadence should be referred to as "Empress". When he questions why this isn't the case, none of the ponies he asks can answer -- apparently, the thought never occurred to them.
** It's more or less implied later that this was a side effect of Celestia's rule. She ''was'' offered Queenship, but turned it down as to appear more approachable by the then scared populace. Her rule was so good that 1,000 years later "Princess" has become the defacto highest title for a female ruler in emulation of her, making this a JustifiedTrope.
* PsychoForHire: [[spoiler:Bagan]] offers his minions rewards for helping him. All he can offer Grand King Ghidorah, Hedorah, and Gaira is the chance to cause destruction and feed off the carnage. Grand King Ghidorah even flat out admits he was ''never'' controlled by any alien race: he just allowed them to THINK he was.
* PsychoRangers: The AntiVillain counterparts to the above PowerTrio.
** TheLeader[=/=]BlackKnight: Monster X
** TheLancer: Gigan
** DumbMuscle: Megalon
** [[SixthRanger Fourth Ranger]]/DarkActionGirl: Irys/Hyper Gyaos
* RaceAgainstTheClock: [[spoiler: Rodan can only exist in FanFic/TheShimmerverse for 24 hours, meaning he has only a day to help that world's Princess Sunset Shimmer stop a plot to destroy Canterlot.]]
* RadiationImmuneMutants: Subverted with all natural Equestrians. Because Equestria has so much free roaming magic in it, all the natural species like ponies and other species are so used to all that energy flying around that radiation doesn't affect them positively or negatively. PlayedStraight with Godzilla Jr. and Xenilla, who are mutated dinosaurs with an acquired radioactive power source.
* RankScalesWithAsskicking:
** ''Princesses'' of Equestria, Luna and Celestia on the Equestrian side; and ''King'' of the Monsters, Godzilla on the Kaiju side.
** On the villain side, almost all of the major Equestrian villains [[spoiler: Grogar's students]] had/have a royal title; Sombra was a tyrant king of the Crystal Empire for a time, Chrysalis is the queen of the changelings; and going off the comics, Tirek was the crown prince in a faraway kingdom.
* RasputinianDeath:
** [[spoiler: Enjin gets one, after several chapters of [[WhyWontYouDie absolutely refusing]] to be critically damaged.]] [[note]] It takes several fights with Monster X and Aria Blaze, its body becoming unstable, getting blown to bits by Kaizer Aria, two mass internal attacks by the most powerful siren in the world at that point, a full on beat down by a super charged Monster X, finding out its unique weakness and exploiting that one shortcoming; and then hitting it with an attack strong enough to one-shot some lesser kaiju at the exact right spot to rip its core out[[/note]] [[spoiler: However, even ''that'' failed to truly kill him as [[DemonicPossession a fragment of his core possesses Sunset Shimmer]]. Eventually, Rarity manages to remove him from Sunset's body and then throw him so that he's hit by Grand King Ghidorah's beam, which finally completely destroyed him.]]
** [[spoiler:Grand King Ghidorah also gets one. He receives several bad injuries from the Dark Hunters, has one of his jaws broken by Junior, has parts of his body ''melted'' by Junior in his Burning form, receives several more such wounds from Burning Xenilla, is run clean through on Junior's longest dorsal spine through one of the wounds the Dark Hunters inflicted which also splits his core (his ''heart and brain'') clean in half, has his body be torn apart by the countless souls he'd absorbed escaping his wrecked core, has a multi-megaton explosion go off in his wing that wrecks it thanks to Rarity throwing the overloading, unstable Enjin into it, and ''only'' dies when Godzilla Junior, Xenilla, and the ghost of Godzilla Senior obliterate him with a Family Spiral Fire Ray that had to overpower his continent busting WaveMotionGun to reach him.]]
* ReasonableAuthorityFigure: Princess Celestia naturally. Mayor Mare also gets marks for not letting the hysteria some were spreading about Godzilla Junior get to her and take time to understand his intentions were good. Whereas some were calling for Junior to be brought to court, she wrote a request to the Princesses to grant him a full pardon of all charges and to be granted citizenship.
* {{Reconstruction}}: The story as a whole could be taken as a reconstruction of tone for the Showa Era Godzilla franchise, which had far more gags and humor than the latter two most stories base themselves on. Numerous LighterAndSofter and PlayedForLaughs elements absent in other Godzilla fan works, even other My Little Pony crossovers, are given as much spot light as the more serious moments. Numerous readers have commented that the story's balance of humor and seriousness is a large factor in keeping it from [[TooBleakStoppedCaring going off the deep end]] like some others have.
* RedEyesTakeWarning:
** The only feature an injured pony can see as a hooded figure [[spoiler: (Monster X) ]] looms over them is it's glowing red eyes. Subverted as the figure just saved them from several Symbiotic Legion and even bandaged them up due to an honor code, so the being meant them no harm.
** [[spoiler: Played straight with Aria Blaze after she absorbs a portion of Kaizer Ghidorah's powers. When his influence and power flare up in her a key indicator is her irises turning from violet to red. While she burns out a vast majority of the kaiser powers by the end to supercharge Monster X, she does still have a few speckles of red in her eyes when she wills it.]]
** Inverted with Godzilla Junior. While his eyes do light up when using a charged beam or nuclear pulse attack, the glow is white. When his eyes ''do'' turn red it's because he's scared.
* RelatedInTheAdaptation:
** In the Halloween special, Pipsqueak mentions Octavia is his cousin, while no known relationship between them exists in the show.
** Raiga was a generic kaiju back in her own movie. Here, she is a member of Godzilla's species and considered an honorary cousin.
** Princess Cadance is the descendent [[spoiler:(time displaced daughter)]] of Princess Amore.
** Prince Blueblood is a descendant of Princess Platinum, while the show never clarified why he had a royal title.
** It's implied Private Pansy was an ancestor of Fluttershy due to a similar surname.
** ''The Sentry Legacy'' reveals Indigo Zap and Flash Sentry are cousins, Flash's father Stalwart Sentry and Indigo's mother Mulberry Zap [[note]]maiden name Mulberry Sentry[[/note]] are brother and sister. As with Pipsqueak and Octavia, no known relation exists. ''Legacy of Everfree'' reveals Gloriosa Daisy and Timber Spruce are their second cousins, since their father Salty Sentry is the cousin of Stalwart and Mulberry.
** [[spoiler:The Windigos are the rapist fathers of the Siren trio. Adagio and Sonata are half-sisters (different fathers, same mother) and Aria is their cousin, born of the other two's mother's sister.]]
** Because they are both creations of the M Nebulans in this version, Gigan and Megalon consider each other brothers.
** Zigzagged with the Sirens, as it wasn't clear if they were related or not at the time of their story arc. In the story Adagio and Sonata are half sisters while Aria is their cousin, in canon they are all related after all and are presumably full sisters.
** Despite initial speculation, defied with the Legendary Picture's incarnation of Godzilla, here called Gojira. While he and the modern day Godzilla lineage closely resemble each other, it's established Gojira is a Permian age natural kaiju whereas the Godzilla line are mutated dinosaurs completely unrelated to Gojira. The resemblance is just coincidence.
** [[spoiler: Xenilla (Spacegodzilla) and Mothra Lea are technically half-siblings, since Xenilla was born from a mixture of Godzilla Senior's blood and Lea's mother's magic.]]
** It is mentioned that Sunburst's parents adopted Starlight and Moonbeam Glimmer.
* RoboFamily: Several.
** Gigan and Megalon, the two M Nebulan cyborg kaiju, were made by the same creators with Gigan as Megalon's prototype. They regard each other as brothers.
** An organic version is the artificially created Guardian Beasts, whom all share traits and were all patterned after Anguirus. Exact terminology varies but they consider each other siblings or at least cousins.
** [[spoiler:Due to them not having a father and being created from scratch from Harmony, Celestia and Luna are an organic version as artificial Equestrians and consider each other sisters.]]
* RevengeThroughCorruption: Aside from wanting to use her for her magical potential, [[spoiler: the Windigos think using Sci-Twi as their vessel of destruction is a good way to spite Harmony]].
* RoguesGalleryTransplant: Often a side effect of the multiple continuities merging on the kaiju side.
** By merit of now being in a shared universe, the Gyaos from Daiei act as this for multiple heroic kaiju; functioning as the StarterVillain kaiju for Toho kaiju Mothra Lea and Godzilla Junior. [[note]]To give a comparison, this would be akin to Marvel and DC sharing a universe with the Joker being an enemy to Spider-Man.[[/note]]
** In the prequel, ''Tales of the Amalgam'verse: Godzilla meets King Kong'', the first real opponent the teenage Godzilla Junior faces is the similarly young Gaw from the Joe [=DeVito=] Skull Island prequel novels.
** [[Franchise/UltraSeries Ultraman Belial]] squares off against Monster X in a prequel special.
** The 2019 Halloween Special features [[Series/UltramanTiga Giranbo]] as its main antagonist.
* TheRemnant: ''The Bridge: A Shimmer in the Dark'' features as its main antagonist Countess Mircalla, the last remaining one of Nightmare Moon's Generals, leading a reserve force that is all that's left of the latter's shattered army. Notably, she's lost faith in the cause, [[MyMasterRightOrWrong but keeps going out of debt to her former master]] (and because she knows that if she doesn't, the AlwaysChaoticEvil Nightmare forces will tear her apart for disloyalty).
* RocketlessReentry: [[spoiler:Xenilla and Godzilla Junior's battle with Grand King Ghidorah [[HighAltitudeBattle ends up at the edge of the edge of the atmosphere]] (due to Grand King Ghidorah dragging Junior up there and Xenilla coming up to save him). After King Ghidorah has been destroyed, the two are exhausted and plummet back to earth where the rest of the heroes rescue them. Justified as Xenilla has to have surviving atmospheric re-entry as RequiredSecondaryPowers and Junior can survive molten lava, it was the impact with the ground that was the threat.]]
* RunningGag:
** The characters of the two franchises use some of their principal creators' names whenever they say 'God'.
*** The ponies say "Faust" and "Bonnie", referencing Lauren Faust and Bonnie Zacherle, the principle concept creators for Friendship is Magic and My Little Pony respectively. Any character created Post Season 3 and for the Equestria Girls movies replaces "Faust" with "[=McCarthy=]", likely referring to writer Meghan [=McCarthy=].
*** The kaiju roster says "Tanaka", referencing Tomoyuki Tanaka, one of the creators of the kaiju genre and the producer on almost all of Toho's monster films up until his death in the late 90s.
** Every time Gigan enters one of the Equestrian human worlds, he either (much to his dread), encounters Mane-iac or gets hit with a hair care product.
** Whenever a kaiju and sirens are all in the same world together, the sirens' van gets damaged or wrecked.
** The CMC constantly botch pronouncing the pronunciation for Destroyah's name, many referencing all the alternate namings she's been given.
** Godzilla Junior never can understand a word Prince Blueblood is saying.
* SamaritanSyndrome: Flash Sentry suffers from this, frequently finding himself assisting ponies he stumbles across. This is why he missed out on a lot of important events in the past. [[spoiler: Unfortunately this gives him a lot of guilt thinking he could have done something to help stop a crisis instead of having been busy getting a hospitalized colt his lost toy.]]
* SaneBossPsychoHenchmen: WordOfGod notes that this was the exact plan of [[spoiler:Bagan]]. He wanted minions that would do what he needed from them easily, so what better way to do that than get people in his forces that would do horrible things on their own? Among his ranks are [[Film/WarOfTheGargantuas Gaira]] (a mutated cannibalistic psychopath), Hedorah (a WalkingWasteland who only lives for destruction), and [[ForTheEvulz King Ghidorah]] (a serial planet-destroyer).
* ScarsAreForever: Played with. Godzilla ''does'' have a large number of permanent scars from past battles, but his powers repress them from sight most of the time. When he's especially drained of power however, they reemerge.
** Luna has a permanent scar under her wing, from a long ago battle with Tirek.
** Monster X has several scars on his face and torso, but they're obscured by his body armor.
* ScarSurvey: As mentioned above, both Luna and Junior are marked up and give each other a once over.
* SealedEvilInACan:
** [[spoiler: Bagan]], the most powerful being to ever walk Terra and the greatest calamity sentient life has ever encountered was sealed underneath Attu Island, an unassuming small landmass in the north Pacific.
** The original Gabara was sealed in a chamber beneath Aokigahara a.k.a the "Suicide Forest", but was able to astral project.
** [[spoiler:Grogar, the Nexus of Dark Magic and a being on par with Bagan and Harmony, was imprisoned in his realm of Tambelon by Harmony, the entrance to which is beneath the Crystal Empire. Chrysalis and Sombra are planning to release him.]]
** Queen Beryl is imprisoned within the Negaverse, a dark realm underneath Neighpon. She can send her influence and forces through portals onto Neighpon, but as long as the Silver Crystal is outside of her realm she can't leave.
* SecondLove: [[spoiler: Aria Blaze becomes one to Monster X, who had a wife in his old life as an Xilian.]]
* SemiDivine: [[spoiler: Princess Celestia and Luna are direct creations of Harmony and the closest things to children she has. The sirens are also this to a lesser degree, as their windigo sires were direct creations of Grogar.]]
* SevenDeadlySins: Seems to be the overall motif of [[spoiler:Grogar's students and Dark Magic. Tirek was greed, Sombra was wrath, Discord was gluttony (in the broader sense of hedonism), and Chrysalis is lust.]]
* SexualKarma: While nothing is shown due to the rating, there is a trend where individuals honestly in love with each other tend to have a lot of intimacy.
** [[spoiler: Both Aria and X as well as Blade Dancer and Xenilla have had both couples get intimate and the action generates a ''massive'' amount of love magic.]]
** By comparison any character who has or fancies the possibility of raping another is rightfully treated as disgusting and monstrous.
* ShapeshifterBaggage:
** Rarity asks where the Kaiju's mass comes and goes when they transform. Twilight theorizes that the magic that transformed them converted excess mass to energy. Otherwise, the Kaiju-Converts would be so heavy they would fall through the floor.
** Changelings cannot alter their size when they shapeshift.
* SharedFamilyQuirks: Subverted as they aren't related by blood by merit of the younger being adopted and the older being a "bastard child" of sorts, but both of Godzilla Senior's sons Xenilla and Godzilla Junior are actually pretty similar in some ways. Both of them have a habit of being very observant, have photographic memory; [[ArsonMurderAndJaywalking and question why the Crystal Empire royals aren't Emperors and Empresses]].
* ShipperOnDeck:
** Celestia, upon seeing how flustered but happy Luna was at getting roses from Junior, decides to get the latter shifted to the Night Guard. She lately playfully tells Junior Luna's AffectionateNickname she knows [[note]]"Lulu"[[/note]] she uses, knowing it'll fluster Luna.
** Megalon was on board with [[AbhorrentAdmirer Mane-iac's]] plan to marry Gigan, even offering to be the best man at the wedding. Granted, [[TheDitz Megalon]] didn't understand that Gigan would rather have his head blown off ([[Film/GodzillaFinalWars again]]) than marry Mane-iac.
** Rarity, Pinkie Pie, and Applejack support Anguirus' and Ki Seong's mutual crush.
** Mariner "Chibi" Moon is a huge Princess Luna and Godzilla Junior fangirl. Finding out the two are confidants and Junior's being in Luna's private chambers [[note]]nothing lewd, he was recovering there or waking her up[[/note]] leads to her instantly hoping they're an item.
* ShipSinking:
** When some fans started shipping Rodan and Thalia, the author was quick to torpedo the ship. Tarbtano pointed out Thalia, whom is owned by a friend of his, is already HappilyMarried to her husband Dallas, and she is meant to act as a CoolBigSis to Rodan. Additionally, said interaction was based off the author's own CoolBigSis in real life, meaning shipping them creeped him out.
** As for Chapter 30, Blade Dancer's affections for Godzilla Junior have died off after her confusion period due to her accepting he didn't return the feelings, [[spoiler: and her focus moving onto Xenilla. It's also well implied Xenilla is starting to return them.]]
** Also in Chapter 30, Mothra Lea's reaction to being asked if she and Godzilla are married is to laugh and say that's ridiculous.
* ShoutOut: Lots of them, both to official content from the source and outside franchises, fandom works, and unreleased series:
** Xenilla often calls Godzilla Jr. "''Icka'brod''", which in their language means "''brother''". This is a nod to a kaiju fan film, ''Godzilla x Kaiju Killer'', where a kaiju named Stalkus used it to call another character the same thing.
** Spike gives a quick barrage of them when listing off the names of various historical Equestria figures, all of which are the names of or directly relate to other fictional horses:
*** Lady Amal'thea - ''Literature/TheLastUnicorn''
*** Masked Tornado - [[{{Franchise/Zorro}} The name of Zorro's horse with his rider's masked motiff.]]
*** Dame Epona - [[Franchise/TheLegendOfZelda Link's Horse seems to be his Equestrian version.]]
*** Shadowfax - [[Literature/TheLordOfTheRings Must be Equestria's Gandalf.]]
*** Esperanza - [[WesternAnimation/SpiritStallionOfTheCimarron Spirit's mother had been doing well.]]
*** Silver Scout - [[Radio/TheLoneRanger The Wild West in Equestria sure had one heck of a law-pony.]]
** The exchange between Luna and Junior as the former is about to launch the latter into battle is a {{WebAnimation/RWBY}} reference.
** The Cutie Mark Crusaders are fans of a show about monster hunters starring [[Series/{{Supernatural}} the Whinnychester Brothers]].
** The plot of a book Blade Dancer reads in one scene resembles ''Film/{{Ladyhawke}}''.
** The design of King Sombra's scythe closely resembles the scythe he used in the fan animation ''Fall of the Empire''.
** Xenilla's NoHoldsBarredBeatdown of Sombra at the climax of their fight is based on the one Superman gives Mongul at the climax of ''Comicbook/ForTheManWhoHasEverything''.
** Kaizer Ghidorah's attack on Aria Blaze is based on a scene from ''Film/TheWolfman2010''.
** The entire sequence with the rampaging baby Destroyah swarm is a walking ''{{Film/Gremlins}}'' reference, even using the theme song during the rampage.
** The baby Destroyahs talk like [[WesternAnimation/LiloAndStitch Stitch]].
** [[spoiler:When Irys, Gigan, and Megalon are fighting King Ghidorah,]] Megalon states that he didn't bring [[Franchise/{{Pokemon}} Fairy types]].
** Several of Kaizer Ghidorah's moves during his fight with Grand King Ghidorah resemble ones [[Anime/DragonBallZBrolyTheLegendarySuperSaiyan Broly]] used.
** Monster X says gravity control requires skilled movements, a reference to both [[WesternAnimation/AvatarTheLastAirbender Bending]] and [[Franchise/StarWars The Force]].
** Megalon says, "TOOO THE BOSS BALL! [[IdiosyncraticWipes Danenenea]]!" This is a reference to a RunningGag on ''Series/Batman1966''.
** The BigBad is shrouded in shadow, making his features except for his eyes impossible to see. This references Zoom from ''Series/TheFlash2014''.
** The supercharged Monster X's finishing move is a DivingKick whose motions and visuals are a shout out to ''Franchise/KamenRider''.
** Moonbeam Glimmer's backstory is one to ''Manga/MetroidManga''. [[spoiler:As children, Moonbeam Glimmer and Samus Aran both attempted to befriend a dragon, only for the dragon to turn on them and leave them orphans.]]
** A lot of the MirrorUniverse Gigan's dialogue and actions resemble Lobo's from ''WesternAnimation/SupermanTheAnimatedSeries''.
** When Mirror Gigan acquires a chainsaw, he says "[[Franchise/EvilDead Groovy.]]"
** Mariner Chibi Moon is basically [[Franchise/SailorMoon Chibi Usa]] in Equestrian form.
** The name of the mermare capital [[note]]Mako[[/note]] and several mermares that lived or are living there [[note]]Nixie, Ondina, Rita[[/note]], seem to be ones to ''Series/MakoMermaidsAnH2OAdventure''.
** Godzilla Junior's Nightmare form [[spoiler: looks like a ponified ''Film/ShinGodzilla''.]]
** A spell sequence Sunburst and Key Ring work through has the KonamiCode.
** [[spoiler: Chibi Moon begging Nightmare Godzilla to stop closely mirrors Molly's plea to Entei from ''Anime/Pokemon3''.]]
** Godzilla Junior, Xenilla, [[spoiler:and Godzilla Senior's ghost working together to destroy Grand King Ghidorah resembles the Family Kamehameha from ''Anime/DragonBallZBrolySecondComing''.]]
** Everyone working together to [[spoiler:save Junior and Xenilla from falling out of the upper atmosphere is a reference to the ending of ''Anime/KillLaKill''.]]
** The Halloween costumes and song the sirens use in ''"Hocus Smo'cus"'' are from ''Film/HocusPocus''.
** Following up from their daughter's status, Chibi Moon's parents and their teammates base in Neighpon closely resemble [[Franchise/SailorMoon Sailor Moon, Tuxedo Mask, and the other core four Scouts]].
** A lot of Giranbo's design, actions, and dialogue draw from [[Film/TheWizardOfOz The Wicked Witch of the West]], ''Literature/{{It}}'', and [[Franchise/ANightmareOnElmStreet Freddy Kruger]]. She also shape-shifts into several ''Franchise/UniversalHorror'' monsters.
* ShownTheirWork:
** The creators have shown a huge knowledge of both the kaiju movie franchises and My Little Pony. Fairly obscure references to how magic works for the latter is brought up several times, and the kaiju side of the crossover also include several little known kaiju like Raiga [[spoiler: and unmade creations from Toho like Bagan, Enjin, Doragon, and Mizu]]. Similarly it's not at all uncommon to have My Little Pony characters from the IDW comics (Nightmare Rarity), books (Electra), or prior generations (Generation 3 Rainbow Dash as the current one's mother) show up.
** The creators did an interesting take on what happens when you transform one species into another but keep some of the original form's traits. To merely exist in the gargantuan forms they did without imploding, [[RequiredSecondaryPowers most kaiju would need to be made of extremely strong muscles, bone, and tissue.]] This explains how Godzilla can walk through concentrated cannon fire with barely a flinch. Keep about 1% of this ability when shifted into pony form, it explains why despite not technically being trained athletes; most of the ponified kaiju are incredibly strong and very tough. [[note]] Arguably best shown in Godzilla Junior's fight with the Royal Guards (It was a misunderstanding). One guard repeatedly struck him in the ribs and gut to [[NoSell absolutely no effect]]. A sideways backhand by Junior dented in his bronze body armor and sent the guard hurling into a wall. [[/note]]
** Tarbtano has paleontology and herpetology as his main interests and frequently shows his research in the works. For starters, dinosaurs and pterosaurs are referred to as two separate groups as opposed to having the latter lumped into the former. Rodan is also mentioned to be covered in pycnofibres instead of scales or bare skin like many pop culture depictions of pterosaurs. Eno in the ''Dinosapien'' side story as well as his raptor opponents are all accurately feathered and extremely bird-like. Additionally several changes were made to the ''Jurassic Park'' series to make it more accurate and have less handwaving. This includes changing the raptors to explicitly be ''Deinonychus'' (see AdaptationalSpeciesChange), giving the ''Deinonychus'' full plumage once more pure clones were created and giving the ''Tyrannosaurus'' proto-feather manes.
** The flashbacks to the ancient humans circa 70,000 B.C. all show them with features most similar to Eastern Africans and Austronesian aborigine regardless of their locations, such as upper-central Asia, Japan, or Europe. This matches paleoanthropology models as the phenotype genes for many modern racial groups didn't emerge until tens of thousands of years later. Additionally, they are entirely modern humans anatomically and not Hollywood styled cavemen, as modern humans had already existed for at least four times that long ago.
** The Korean aspects are well researched. Ki Seong's name pronunciation and given name-surname arrangement are accurate to real Korean, with a silent "e" and the gumiho's backstory very closely echoes several folktales, namely "The Fox Sister".
** Zoisite in the ''Franchise/SailorMoon'' inspired omake is male like he was in the source material, unlike the original English dub which changed them into a woman.
* ShutUpHannibal:
** Monster X gives one the dark voice in his head [[spoiler: (later shown to be Grand King Ghidorah)]] when it attempts to take over his mind.
** When Xenilla gives Blade Dancer a speech deriding love as an addiction that controls everyone, she responds by punching him in the face (hard enough that he ''actually feels it''), states that when she's felt love it's been ''real'', not an addiction, and ends by stating that if he's ever felt love, then by his own logic he's as much a slave as anyone else.
** During their fight, Xenilla interrupts Sombra's fight monologue by blasting him in the face, all while being rather bored and annoyed that Sombra won't stop talking.
-->'''Sombra''': You brute! Have you not evolved the ability to address your better?!\\
'''Xenilla''': No words needed. I'd have a human gesture for you, but I don't have any fingers at the moment.
* SiblingTeam:
** Princesses Celestia and Luna, as in canon. In fact, here they even have WonderTwinPowers and get a power up from being near each other.
** [[spoiler:Junior and Xenilla eventually reconcile and become this in time to defeat Grand King Ghidorah together.]]
* SiblingYinYang: Ironically with both franchises.
** Princess Luna is much quicker to the trigger than Celestia, being very distrusting of Godzilla Junior until seeing his true colors. And while she was ready to throw her name into the ring if needed, Celestia's priority during the castle hall brawl was to stop it and figure out what was going on rather than join in.
** Godzilla Junior is selfless, heroic; while quite [[GeniusBruiser smart]], he has lackluster social and speaking skills. Xenilla is very articulate in his speech, easily comes off as an intellectual; but is AmbiguouslyEvil or LawfulNeutral at absolute best.
* SickeningCrunch: During her [[NoHoldsBarredBeatdown merciless beating]] of [[spoiler: Sci-Twi]], Aria kicks her several times in the chest. A crunch reveals that Aria ends up breaking one of her ribs.
* SleepCute: When Rodan and [[FanFic/TheShimmerverse Princess Sunset Shimmer]] sleep inside a hollowed out tree, they end up snuggling and holding each other.
* SlidingScaleOfIdealismVersusCynicism: Given the two franchises' tones, this really is to be expected to bounce around a lot. Over all it does lean on ''idealism''.
** On one hand the fully blown fights between the characters can be quite brutal, with visible injuries and often lethal end results. Most of the kaiju heroes do no abide by ThouShallNotKill. Situations can quickly turn dire and many of the heroes are carrying around more than their fair share of psychological baggage. Characters both good and evil can and do die, and many dark horrible things are trying to destroy Equestria.
** But on the other hand, the heroes from both franchises are fighting against those dark and horrible things without losing their moral center. Having to resort to lethal force to stop a monster from killing dozens of innocent lives doesn't turn someone into a sociopathic AntiHero. And ThePowerOfFriendship can often manifest itself in unorthodox ways.
* TheSmurfettePrinciple:
** While the [[ImprobablyFemaleCast ponies]] obviously don't need any help in this regard, extra effort is taken to avert this for the Kaiju. Mothra and Irys/Hyper Gyaos are established as being members of [[OneGenderRace all-female]] species, and the usually ambiguous Destroyah is made explicitly female. That said, the trope still applies to the Kaiju CastHerd[=s=] individually, as they each have only one female member: The Terran Defenders have Mothra, The Mutations have Destroyah, and Monster X's group has Irys.
** JustifiedTrope in the case of Destroyah, given there are only two Mutations in the story, so their numbers are gender balanced.
** [[spoiler:Of the three Nexuses of Dark Magic, only Harmony is female, though Bagan is technically genderless.]]
* SoProudOfYou:
** Azusa Gojo/Aoki was the one who helped raise the young dinosaur who [[KidHeroAllGrownUp grew up]] into Godzilla Junior, the two seeing each other as mother and son. She couldn't be prouder when her influence helped him grow into a hero that saved both her and San Francisco.
** Godzilla Junior himself invokes this trope when he disagrees with Princess Luna's assertion that her father figure, Starswirl the Bearded, would see her as a failure for turning into Nightmare Moon; bringing up her helping to save Canterlot and growing into a beloved diarch since then.
** [[spoiler:Godzilla Senior shows this to Xenilla and Junior after [[BackupFromOtherworld helping them kill Grand King Ghidorah]].]]
* SoldierVsWarrior: Appears to be a core distinction between the more sympathetic antagonists, such as Monster X (soldiers) who are just following orders, and the more malign members of the roster who do so for their own prideful gains such as King Sombra (warriors).
* SomethingElseAlsoRises: Pegasi and Alicorns are shown to have a tendency to flare their wings out whenever they’re excited or flustered (mostly the latter):
** Blade Dancer does this when Xenilla is questioning why she has Junior’s scent over her and she mentally curses the fact that her wings are doing this, describing it as a natural bodily reaction.
** Luna gets this, alongside a LuminescentBlush, when she see’s that Junior brought her roses as thanks for everything she did for him.
* SpannerInTheWorks:
** Mothra Lea and Godzilla Junior prevented the Gyaos flock from claiming the Tree of Harmony and Canterlot. The BigBad did not anticipate their interference at all.
** If Xenilla hadn't been sent to the Crystal Empire, King Sombra would have likely succeeded in assassinating Princess Cadance.
** [[spoiler:Bagan doesn't want Monster X's friends to know he's in the Equestria Girls world, so when he brings Irys there so she can eat, he makes sure to drop her off in the city where Crystal Prep High School is instead of where Canterlot High School is so there's zero chance she'll run into X. However, several Canterlot High students were visiting the city for the red carpet premiere of a new Daring Do movie. Irys runs into Photo Finish, who had witnessed a fight between X, the Sirens, and Enjin, and took photos, thus alerting Irys to X's situation.]]
* SparedByTheAdaptation:
** Grand King Ghidorah, Baragon, Xenilla, Destroyah, and numerous other kaiju are all still alive due to changes in the timeline.
** Due to the Terran Defenders and other mecha being present, many of the Jaeger teams who died in '''Film/PacificRim'' are still around.
** [[spoiler:Stacker Pentecost]] survived the events of ''Pacific Rim'' as well, thanks to Godzilla destroying the Rift the first time along with Mutavore, preventing his HeroicSacrifice from being needed to close it.
** While implied to have survived in canon, Film/{{Dinocroc}} is confirmed to have done so here, as well as having been the same monster in ''Dinocroc vs Supergator'' and survived that film as well.
* SpotTheImposter: In Chapter 36, Anguirius does this when Jeog impersonates Ki Seong, as he notes various out of character moments -- claiming not to have had any plans with her niece Gentle Leaf (which he knows for a fact she did), being much more openly flirtatious than Seong usually is, and most importantly [[spoiler: doesn't know who he really is, which Seong recently revealed she does]].
* StepIntoTheBlindingFight: Irys gets a slight advantage over King Ghidorah by extinguishing the torches around them. She isn't hindered as she can use echolocation. While he can glow and hear her echolocation, he can't pinpoint her.
* StockholmSyndrome: An example that is both exaggerated, defied, and justified. The Sirens and and the Dark Hunters kidnap [[spoiler:Princess Twilight Sparkle, after menacing her friends, after they mistake her for her human counterpart, who has stolen Sonata's heart. Seeing how badly Sonata was traumatized, and how much both groups care about her, as well as grasping at how it was a logical but huge misunderstanding Princess Twilight not only decides to help them, but willingly works with them to find her human counterpart. She lies to Gloriosa that she had always been their friend, and eventually offers Adagio the chance to return to Equestria, with the only quid pro quo that they don't kill anyone. It is justified however in that the sirens and hunters never do anything malicious to her, give her a lot of freedom, and X and Gigan, the very two who kidnapped her, apologize for it. Twilight for her part stays to help moderate them by her influence, making the best of the situation while not excusing her captors actions. It's obvious no one really wants to keep her captive, they just can't release her without risking an irrate Mothra and Celestia coming in guns blazing for vengeance. When Twilight is finally let go by them, she considers the Sirens and Dark Hunters to be her friends...[[ForgivenButNotForgotten but she still admonishes them for kidnapping her and causing so much havoc]], albeit ''very'' subtly, and makes it clear ''she's'' calling the shots from now on]].
* StoryBreakerTeamUp: Despite there being a large difference in power between the strongest kaiju and the strongest Equestrians, measures were taken to avoid this. The Equestrians are still presented as very competent and having unique skill sets that complement the heroic kaiju's. And the situation the core group of kaiju are in require the Equestrians to get back to full strength. Also counts as {{Defied}} as WordOfGod is the inspiration for the story was in part due to many Godzilla crossover fics being this trope and consisting of 'drop Godzilla into the setting and let him kill everything,' and thus he wanted to do something different.
* StumblingInTheNewForm: Most of the kaiju who were ported to Equestria didn't have this problem, as all had prior experience walking on four legs before (or six legs in the case of Mothra Lea). Rodan, meanwhile, went from a bipedal pterosaur-kaiju to a hexapodal, quadrupedal griffin. He falls flat on his face the first few times he even attempts to ''stand'', and stumbles clumsily for a few chapters afterward.
* SufficientlyAnalyzedMagic: A rather odd example of an inversion. Twilight and Mothra submit some of Godzilla's hairs to various spell-based tests, and find out his biological radiation is nearly identical to highly unstable magic.
* SummonBiggerFish: Multiple:
** Let [[http://youtu.be/pBpGalivZ4Q this]] be a hint. [[spoiler:Garble and his gang are attacked by Anguirus after he transforms back into a {{Kaiju}}.]]
** Flock of 0.25-12,000 ton Gyaos and Super Gyaos flying towards Canterlot? Throw up a shield and let the 60,000 ton Godzilla have at it.
** [[spoiler:The souls Ghidorah had absorbed that Junior freed, with some aid from from Harmony, allow Godzilla Sr. to manifest to help his sons destroy Ghidorah once and for all.]]
** ''The Lost World RPG'' has two key examples. Instead of going in on foot to sabotage the Biosyn poacher camp, the Ingen team instead antagonized an angry ''Mamenchisaurus'' into rampaging into the camp. The final boss fight against the Ultimasaurus entailed summoning comparably sized the ''Film/JurassicParkIII'' ''Spinosaurus'' to fight it.
* SuperMode:
** [[spoiler: Aria Blaze after unleashing all the energy she's been siphoning off Kaizer Ghidorah gains a transformed state similar to Midnight Sparkle.]]
*** [[spoiler: Which then boomerangs around with Aria helping Monster X unlock a halfway state between him and Kaizer Ghidorah he can still control during the kaiju brawl with Enjin.]]
** [[spoiler:Raiga enters one after Mirror Starlight and Mirror Lightning Dust channel Manehatten's entire power supply into her, gaining InstantRunes all over her body and becoming powerful enough to overpower and come close to ''killing'' [[BigBad Mirror Godzilla]]. According to WordOfGod, this is her true form she would've awakened in had she not awakened prematurely, and all the Guardian Beasts have a similar form for the same reason. Rodan accesses his during the FinalBattle of ''A Shimmer in the Dark'' when supercharged by Princess Sunset's magic, though in his griffin form rather than his true one like Raiga. Irys eventually accesses hers upon awakening as Guardian Beast Eta to battle Kaiser Ghidorah.]]
** ''Meltdown'' form for Godzilla Junior overclocking his nuclear reactor in his heart, entering a state similar to but not as extreme as the one his father perished from as indicated by his glowing patches burning blue-white rather than red. [[spoiler: Xenilla follows his example and gains it as well, though he can't control it as well.]]
* SuperPoweredEvilSide:
** Nightmare Moon and Nightmare Rarity for Princess Luna and Rarity respectively. The form comes with a large power boost, at the cost of their wishes and fears (being forgotten and being replaceable) being bastardized. [[spoiler: Nightmare bonding to Godzilla Junior results in the Shin Godzilla looking Nightmare Godzilla.]] Princess Celestia has her equivalent in Daybreaker.
** Kaizer Ghidorah for Monster X, mixed with a SplitPersonality. Whereas Monster X is a rational AntiVillain and very powerful in his own right, Kaizer Ghidorah is at least twice as strong but with a nonstop berserk rage.
** [[spoiler:The Leviathan serves as one as well as a FusionDance between Godzilla Junior, Zilla Junior, Gojira, and the Showa Godzilla. All of their heroic traits are surpressed and it is a barely conscious engine of destruction driven solely by wrath.]]
* SuperStrength: Most of the kaiju both in their natural forms and Equestrian bodies. Godzilla Junior gets a unicorn body, but he is easily stronger than even multiple earth ponies. The only ones with comparable strength are the older alicorns like Princess Celestia, Luna, and Cadance; along with King Sombra.
** Aria Blaze acquires a degree of this [[spoiler: after her drawing power from Monster X/Kaizer Ghidorah makes her start copying their powers.]]
* TheSwarm: Multiple ones:
** Gyaos
** Legion
* TakesOneToKillOne: [[spoiler:Seems to be the case with [[PhysicalGod Nexuses of Magic]]. Bagan, Harmony, and Grogar are so much stronger than everything else that the only thing that stands any chance of killing any of them in a one on one fight is one of the others. Bagan outright admits even Grand King Ghidorah or all three of his Aspects together wouldn't stand a chance against Harmony and goes after her personally (and even he only manages to tie). To note, ''both of them'' were only at 30-40 percent of their full power at the time. While Bagan ''was'' defeated and [[SealedEvilInACan imprisoned]] in the ancient past, it took literally the ''entire'' Mothra and Battra species in order to do so and the Ancients expected nothing less than a small army of monsters stronger than Godzilla and created with Terra's entire remaining mana reserves to have a reasonable chance of defeating him when he eventually escaped. The only one who was ever able to beat Grogar was Harmony, and even then just ''barely'', and according to WordOfGod more out of planning and luck than any difference in their strength. If the Halloween special is taken into account, even Godzilla Earth stands no chance at all against something as strong as them, as he is killed by the Leviathan, a combination of four different Godzillas that is outright described as a God of Destruction and a direct equal to any one of the Nexuses.]]
* TakeThat:
** Tarbtano does '''not''' like the "Tyrantestia" and "Waifu Luna" memes at all, taking several jabs at them. [[note]] To put it into context, ''The Bridge'' was created in the middle of 2013, during earlier life of the [=FiM=] fandom. During said time Princess Luna was a unanimous EnsembleDarkHorse who very frequently was the target of affection in romance stories. Celestia by contrast was very frequently hit with the RonTheDeathEater shtick and was commonly portrayed as a villain, oppressor, or very unattached neutral. While both fanon interpretations for the two had mellowed out dramatically by late 2014, they were still quite prevalent in 2013.[[/note]]
*** Celestia even specifically states they are "Not tyrants." when Luna initially proposes imprisoning the kaiju until a solution can be found, practically firing shots at the ''Tyrantestia'' meme by name. And just to drive the nails in deeper, it's stated several times that in the past Princess Celestia was offered the title of ''Queen'' [[note]] Almost any time in the early fanon Celestia was called a Queen it was a case of GodSaveUsFromTheQueen[[/note]], but she turned it down for perfectly moral and selfless reasons.
*** Bold Rush is basically an OCStandIn for a lot of 'Self Insert O.Cs x Luna' fic character's who are politically powerful and try to charm Princess Luna via feats. [[IdiotBall He tries to kill the ponified and chained up Godzilla with a sword.]] Several [[SuperStrength effortlessly snapped chains, a twisted sword, and smashed ribs later]].... An unscathed Godzilla forced Bold Rush to be sent to the infirmary with his own (heavily annoyed) squad calling him an idiot.
** A much more lighthearted example would be a small jab at Hasbro for making every benign female ruler under Celestia's sun "Princess ___". Xenilla points out the oddity of ''Princess'' Cadance ruling the Crystal ''Empire'', thoroughly confused why she isn't an empress.
** Continuing the trend of off headcanons aimed at the alicorn sisters, recollections about Equestria's past from both Thalia and Princess Luna herself take of the "Nights Rebellion" that started to grow just after Celestia defeated Nightmare Moon. This rebellion was effectively a complete {{Deconstruction}} of the "New Lunar Republic" fan creation, throwing every allegation that group has ever wielded against Celestia and Nightmare and utterly demolishing it while telling it off as horrifically untrue propaganda. [[note]]Such as Celestia being a tyrant who claimed the throne out of jealousy and tried to crown herself [[GodSaveUsFromTheQueen the queen]]. It's mentioned by Celestia herself that she was just doing the best she could in a chaotic situation and that was exactly what she was afraid of being incorrectly seen as doing.[[/note]]
** After several Flash Sentry haters complained about his brief scenes (including a cameo where he ''didn't even say anything'') and demanded he stop appearing in the fic, Tarbtano responded by giving him more scenes and promising to expand his role when the fic gets to the ''Rainbow Rocks'' timeline. Tarbtano also expressed displeasure that Flash became DemotedToExtra, stopped getting CharacterDevelopment, and was made to look like a total chump in ''Rainbow Rocks'' and ''Friendship Games'' just because of several fans complaining to Hasbro about him. Tarbtano pointed out that like Flash, Sunset Shimmer used to be hated by the fans, but became an EnsembleDarkhorse ''because'' Hasbro chose to give her more screen time and CharacterDevelopment in the later movies.
** After several rude comments bragging that the Godzilla from ''Film/{{Godzilla 2014}}'' would make mincemeat of the fic's version of the grown up Godzilla Junior and demanding Tarbtano replace the fic's version with the 2014 one, Tarbtano wrote a semi-canon blog of the MirrorUniverse's 2014 version losing to the MirrorUniverse's Godzilla Junior. Though to soften the blow to the 2014 creature itself, as Tarb's gripe wasn't with it but its FanDumb, the 2014 Godzilla did put up a good fight and the bout ended in a logical way.
** His words in the same blog imply Mirror Godzilla is one to the people complaining and demanding a DarkerAndEdgier Godzilla story. They got it: as the BigBad of a MirrorUniverse story.
** In part 2 of the April Fools special, one of the worlds Pinkie Pie, Sonata Dusk, and Megalon visit on their dimension hopping adventure is a blend of ''WesternAnimation/TitanicTheLegendGoesOn'' and ''WesternAnimation/TheLegendOfTheTitanic''. The trio were disgusted and called it an atrocity, especially the rapping dog and the octopus. When they arrive in ''Anime/{{Pokemon}}'', Sonata calls the adults in that world irresponsible for letting ten year olds wander a wilderness full of creatures that could easily kill people unsupervised.
** The villain Jeog is a playful jab at the MagicalGirlfriend trope, as Tarbtano would like us to know, just because something is a hottie in mythology does ''not'' make it "Waifu" material.
** Tarbtano has expressed a very pointed dislike for the [[Anime/GodzillaPlanetOfTheMonsters Anime]] [[Anime/GodzillaCityOnTheEdgeOfBattle Godzilla]] [[Anime/GodzillaThePlanetEater Trilogy]]. As such, the Halloween special set in the Anizilla universe is full of this. Highlights include:
*** The special is chock-full of intense and exciting Kaiju fights (whereas the movies themselves had essentially none), culminating in [[spoiler:Godzilla Earth being very soundly and viciously defeated (whereas in the movies it was a KarmaHoudini).]]
*** The usually-smug [[SinisterMinister Metphies]] goes insane at the sight of [[spoiler: Leviathan overpowering Godzilla Earth]], and is later shot by Maina before being ultimately gunned down by Haruo.
*** Maina very bluntly calls out Haruo, laying the blame for all of the death, destruction, and misery that happened so far squarely on him and his selfish actions (A common perception of Haruo's character in the movies). Haruo ends up [[HeelRealization agreeing]] and earnestly tries to repent.
*** While the special itself doesn't cover it, Tarbtano has said that if [[AdaptationalWimp Anime!Ghidorah]] fought [[spoiler: Leviathan, it would be [[CurbStompBattle instantly vaporized]] by Leviathan's [[OneHitKill "Hakai"]] ability]].
** The tendency for overdoing the scaling kaiju in modern media has been brought up a few times. Several villain kaiju or shapeshifters take on forms well over 200 meters tall up to a kilometer tall and are killed by the more traditionally scaled 100 meter range monsters.
* ThatCameOutWrong:
** Nearly ''everything'' Godzilla Junior said to Starlight when talking about his interactions with various female characters. Junior is oblivious and talks about things that were entirely platonic, while Starlight keeps thinking it's innuendos and that Junior really gets around.
** Synonyms are Monster X's worst enemy. Upon trying to take Aria Blaze's necklace (called the 'Heart of a Siren'), but learning only she can take it off; he demands she "Surrender your Heart to me.". Both parties were embarrassed.
* TheFaceless: Partially metaphorical, partially literal with Monster X. In his true form, his face is greatly obscured by a bone helmet fused to his head. [[spoiler: In human form he's wearing a white mask and scarf. When Aria Blaze hits him hard enough to crack part of the mask off, she asks why he's hiding his face. X's retort?]]
-->'''Monster X''': "This IS my face..."
* TheGoodTheBadAndTheEvil: An arc that more or less is this eventually comes up after the TimeSkip. The Dark Hunters mercilessly kidnap Princess Twilight, with the Terran Defenders and the Rainbooms trying to save her. [[spoiler: As it turns out they, along with the Sirens, were targeted by the human Twilight Sparkle, who stole Sonata's necklace, and they mistook Princess Twilight for her. She, along with Wallflower Blush, are in league with a psychotically evil group of Wendigos, albeit because the latter have convinced the former that they are fighting for a noble cause. It culminates in a large storyline where each side is fighting one another]].
* TheMirrorShowsYourTrueSelf: Much to his distress, Monster X sees Grand King Ghidorah appear in his reflection at a stream.
* TheReveal:
** The last paragraph of the bonus chapter is notable for this, as it reveals two previously unnamed characters. The first [[spoiler: Monster X]], appeared in an earlier chapter and was even the protagonist of the bonus chapter; going unnamed the entire time up until the last portion. The other was [[spoiler: Gigan]], whom [[spoiler: X]] had crossed paths with and despite the two holding a conversation, he also was not revealed until the end.
** It's eventually revealed that [[spoiler:Chrysalis, Sombra, Tirek, and Discord all learned dark magic from Grogar, who is actually the nexus of it and on a similar tier to Bagan and Harmony.]]
* ThoseWereOnlyTheirScouts: A group of Cloud Gremlins take control of a storm cloud and attempt to invade the weather factory of Cloudsdale. Since the storm cloud is protected by dark magic, it takes a bit of teamwork from Rainbow Dash and Rodan to stop it. Before they can celebrate, a much larger cloud carrying the main Cloud Gremlin force arrives, and the first wave even mentions they were just the scouts.
* TheStarscream:
** Most of the Mutations would gladly kill Xenilla and take over the faction if they had the chance.
** Grand King Ghidorah makes it clear he has no intention of being under [[spoiler:Bagan's]] power for long and is just biding his time. [[spoiler:In fact his entire motivation is to either become something or find something that can kill Reijuu/Bagan.]]
** [[spoiler:Queen Chrysalis joins Bagan's VillainTeamUp, but secretly plans to exploit it to restore her EvilMentor [[GodOfEvil Grogar]] to his full power, fully expecting EvilVsEvil to kick in between the two evil Nexuses of Magic at that point and has her money on Grogar emerging victorious. King Sombra soon joins her after Bagan resurrects him.]]
* ThoughtTheyKnewAlready: Xenilla had known Cadance was pregnant since shortly after meeting her, since his ability to sense through crystals tipped him off to two heartbeats in her vicinity. He never spoke up about it because he just assumed they knew.
* TeamTitle:
** Terran Defenders [[note]]Godzilla Junior, Mothra Lea, Anguirus, and Rodan[[/note]]
** Dark Hunters [[note]]Monster X, Gigan, Megalon, Irys[[/note]]
* ThemeMusicPowerUp: Many of the kaiju and Equestrians have motifs associated with them. When [[spoiler: Aria Blaze unlocks Monster X's SuperMode and the tide in the battle against Enjin turns, "Honest Eyes" by Black Tide plays while in-universe it's her song magic.]]
* ThouShaltNotKill: Discussed to some extent. Pretty well averted with both the Kaiju heroes and the Equestrian heroes when in dire situations. Godzilla Jr. and Mothra Lea have no qualms about mowing down hordes of gyaos if it meant protecting the civilians nearby; and neither Cadance or Xenilla pulls any punches against King Sombra. Unfortunately, a good chunk of the population is very much ''for'' this rule regarding their heroes and half of them are terrified that the Kaiju don't abide by it.
* ThreesomeSubtext: [[spoiler:It's heavily implied Gloriosa Daisy is getting as much a crush on Adagio Dazzle as she is Gigan, with those two also getting teased as having some feelings born of respect and also warming up to her.]]
* TimeMaster: Sci-Twi's telekinesis and portal magic gets altered into warping space and time as a result of her particular training. [[spoiler:Once Zephyrus takes full control of her body, he's able to freeze time for a short span and becomes almost impossible to actually hit in a fight. The only limit is the presence of Harmony's magic halts the time-freezes and they can only move 10 meters per stop.]]
* TomeOfEldritchLore: [[spoiler:Chrysalis possesses one, and implies Tirek, Sombra, and Discord possess the other three copies of it, all of which given to them by Grogar. It fits all the qualifications of it, including being evil and hideous in every sense. Legion describes Grogar's presence radiating from it as being comparable only to ''Bagan's''. The four books also each possess a portion of the spell needed to open Tambelon. They also appear to be NighInvulnerable, which is why King Caesar had to hide Sombra's instead of destroying it.]]
* ToonPhysics: Besides Pinkie Pie's antics, the Power Ponies world runs on this. Being a realm literally inside a comic book rated A for all ages, anything involving gruesome injuries or deaths are physically impossible. Like Gigan dropping Mane-iac from hundreds of feet in the air and trying (and failing) to stab her, neither work.
* TopGod: [[spoiler:Bagan, Harmony, and Grogar. While other beings in their respective worlds have a good claim to godhood either through being genuinely divine (Mothra Lea and the Princesses) or sheer power (Grand King Ghidorah and Grogar's students), Bagan, Harmony, and Grogar are leagues stronger than them. And in most of their cases, at one point or another served as a direct or indirect leader of a group of them (Bagan to the Mothra and Battra, Harmony to her daughters the Princesses, and Grogar to his students).]]
* TrappedInAnotherWorld: Dimension Tide sent the kaiju crashing into Equestria, and so far it's one way as there's no equivalent in Equestria to send them back.
* TraumaCongaLine: Sci-Twi grows through even ''more'' torment than in canon. [[spoiler: She is manipulated by the Windigos into being their minion, and horribly violates Sonata by stealing her gem. This results in her being chased by the Dark Hunters, and badly beaten by Aria, who goes so far as to break her arms and ribs in retaliation, and chokes her out. She ends up giving into hate, and is transformed into a more horrific version of Midnight Sparkle. Then after being blasted with the Elements of Harmony, Aria knockes her out cold with several punches to the face. Finally, Wallflower is manipulated by Zephyrus into erasing her memories, allowing the Windigo to posess her]].
* TruceZone:
** Celestia and Luna declare Equestria this between Terra Defenders and Mutations, due to the possible damage fights between them could cause. However, this only applies to the two factions, as helping fighting other threats is permitted.
** New Birth Island, where Biollante has made her home. She declares that the Defenders and Mutations' war will not happen there, and since she's powerful enough to restrain Junior and Xenilla, they have no choice but to obey her.
* TrustPassword: Monster X recites the time they dealt with the "radio incident with the Kilaaks" and what happened the day they first met to prove his identity to Gigan.
* {{Tsundere}}: Mane-iac goes from fighting Gigan to attempting to crush on him after him hacking off most of her PrehensileHair gives her a haircut she liked. All this happened in the span of five minutes. She turns into a full on {{Yandere}}.
* UltimateShowdownOfUltimateDestiny: The 2018 Halloween Special, the four main heroic Godzilla incarnations against the most powerful villainous one. [[Film/TerrorOfMechagodzilla Showa Godzilla]], Bridge's Godzilla Junior, [[WesternAnimation/GodzillaTheSeries Zilla Junior]], and [[Film/MonsterVerse Legendary Gojira]] vs. [[Anime/GodzillaCityOnTheEdgeOfBattle Godzilla Earth]].
* UncannyValley: This is Blade Dancer's in-universe reaction to seeing Godzilla in his true form, since it's just similar enough to his unicorn form that she met him in to be unsettling.
* UnhandThemVillain: When Destroyah grabs Mothra, Rodan says, "Hands off the bug!" She replies, "Okay." and throws her into him and Anguirus.
* UnstoppableRage:
** Princess Luna takes all the kiddie gloves off and throws everything she's got at Godzilla Junior after the latter beat down multiple guards. Thankfully it was all a big misunderstanding.
** To say Xenilla flies into one after being hit with Sombra's fear magic would be an understatement.
** Kaizer Ghidorah might as well have this as is primary trait. Upon sensing or seeing Grand King Ghidorah, ''nothing'' is going to stop him from trying to rip the latter to pieces. [[spoiler: It's mentioned during his CurbStompBattle against King Ghidorah that Kaizer was tanking so much damage and exerting so much force in his blows that he was [[{{Squick}} breaking his own bones]] from the effort, and even that doesn't stop him from severely mauling King Ghidorah.]]
** This later becomes deconstructed when [[spoiler: Aria finally lays a vicious smackdown on Sci-Twilight after what she did to Sonata. The beat down makes Sci-Twi so angry and fearful, she ends up embracing the power of the Windigoes. And when Aria again lays a smackdown again on Sci-Twi after she is defeat, the sight makes Wallflower think Aria is killing her, driving her to use the memory stone against Aria]].
* UnusuallyUninterestingSight: Vinyl Scratch is rather nonchalant when her radio show receives calls from ponies being attacked by Baby Destroyahs. Even when several of the little monsters destroy an entire wall of her studio, she starts the next track with hardly more than a raised eyebrow.
* UnrelatedInTheAdaptation:
** Zigzagged. Not of blood relation, but despite using his Final Wars design, Gigan here is not controlled by the Xilians. Instead he was chiefly a creation of and maintained by the M Nebula aliens as he was in the Showa continuity. The Xilians, being allies of the Nebulans, did assist in the creation and could request his assistance.
** The Seatopians, if they exist in this continuity, had nothing to do with Megalon.
* UnwittingInstigatorOfDoom: Sonata Dusk attempted to use her powers on Monster X to force him to stop attacking.[[spoiler: Come several chapters later, we find out the traumatic flashbacks he got due to her MindControlMusic woke up the Kaizer Ghidorah personality; making him go on a rampage.]]
* UnwittingPawn: [[spoiler: Zephyrus manipulates Sci-Twi and Wallflower into working for him by claiming to be a hero defending their world from evil]].
* UpbringingMakesTheHero:
** Princess Celestia and Luna were raised by Starswirl the Bearded and the founders of Equestria. While Luna did still suffer the Nightmare Moon episode and Celestia did spend time disillusioned with protecting the ponies, they both did still up as very kind hearted and noble despite their enormous power.
** The grown up Godzilla Junior. While we knew he was a GentleGiant towards humans, unlike his predecessor; we do see the full implications of the love and care he [[Film/GodzillaVsMechagodzillaII received]] under [[MuggleFosterParents Azusa Gojo]] as a baby now that he's all grown up. It turned him into his world's BigGood instead of its next big EldritchAbomination despite being one of the more powerful kaiju of all time.
*** The spin off, ''Sound of Thunder'', shows exactly what happens when this ''isn't'' the case: Junior's MirrorUniverse self instead got Mirror Azusa, who was [[AbusiveParents a cruel witch to him]] and he knows that birth mother abandoned his egg; effectively giving him no parental figures. The result is him being his world's BigBad and an utter psychopath with no regard for life in any form.
** [[spoiler: Sci-Twi, like pony Twilight, has good intentions. But unlike Pony Twilight, she hasn't had the right support network to help her grow as a person. Sci-Twi shows how "good intentions" don't matter when you are not given the proper guidance to measure the impact of your decisions. Since she has a sadistic winter spirit, rather than a benevolent pony princess, as her mentor, she doesn't become a hero but a threat to public safety]].
* UriahGambit: [[spoiler:Xenilla eventually confides to Blade Dancer that in the invasion of Solgell Island all the way back in the first chapter, he had actually been leading the Mutations to their deaths. Had Dimension Tide not interfered, the battle would have continued until all the Mutations were dead except for himself and Destroyah.]]
* VillainOfAnotherStory: Queen Beryl is this, being the BigBad for Chibi's mother and company and an AncientEvil similar to the ones faced by the Bearers and Princesses, but as she's based in Neighpon, she is detached from the main story.
* VillainProtagonist: The Halloween, Winter Holiday, and half the Valentines Specials followed Gigan, Megalon, Monster X, and Irys. Monster X would go on to lead his own story arc opposite Aria Blaze, detailing his forgotten [[FallenHero history]] and current [[EvilVsEvil conflict]] against Enjin. Although the "villain" part becomes increasingly downplayed, as both the Dark Hunters and the Sirens show growing moments of kindness, love, and camraderie. Aria and her fellow sirens abandon all desires for conquest, especially when [[spoiler: Aria discovers love magic]]. [[spoiler: While both groups do go after Princess Twilight, they did it under the mistaken impression she had stolen Sonata's gem. Once her innoncence is proven, they willingly work with Princess Twilight to find Sonata's gem, albeit while keeping her captive to prevent retaliation from her friends]].
* VillainWorld: The BigBad and his underlings spend a majority of their time in a realm called Zenith. Originally a FireAndBrimstoneHell under [[VillainOfAnotherStory RED]], when [[spoiler: Bagan]] took over it became a [[EvilIsDeathlyCold cold]], dark realm with a single structure (a massive dark temple) and endless miles of featureless obsidian.
* VillainousBSOD: The Hyper Gyaos after [[spoiler: she's forced to kill the rest of her blood-crazed flock in self-defense, leaving her the only one left. And since she's sterile, she can't asexually reproduce like the others, leaving her ''literally'' the only one left.]]
* VillainousFriendship: Monster X, Gigan, and Megalon do genuinely get along without any backstabbing and are loyal to each other. Later on, the Albino Hyper Gyaos [[note]]later named Irys[[/note]] joins the team and eventually bonds well with them enough she considers them her new "flock" after the loss of her old one.
* VillainsOutShopping: Literally. Aria and Sonata were going about in a mall when Monster X ambushed them.
* VillainousRescue:
** A flashback reveals that during the Final Wars, Xenilla saved Godzilla's life from a KillSat, and then destroyed part of the invading fleet, because [[TheOnlyOneAllowedToDefeatYou he views Terra as his to rule]].
*** [[spoiler: Or rather, protecting the life of the only thing he cared about. [[GoodAllAlong His]] [[BigBrotherInstinct family]].]]
** [[spoiler:Kaizer Ghidorah nearly murders Aria Blaze until he gets blindsided by Enjin, sent by Bagan to kill him and take his power.]]
** Monster X saves the sirens from Enjin during the hospital attack, citing that their gems would be useless to him if they died.
*** The sirens later repay the favor by ramming Enjin with their van to save Monster X after the battle went in Enjin's favor and X was knocked out cold.
* VitriolicBestBuds: Xenilla and Princess Cadance eventually become this after [[spoiler:saving each other's life and Xenilla earnestly becoming the protector of the Crystal Empire and the royal family after Cadance and Shining Armor offered him redemption.]] Cadance takes Xenilla's very active role in ensuring the well-being of the pregnant Cadance and Shining Armor's unborn child as both flattering and irksome. Xenilla constantly calling her "Empress" and her correcting him she's a "Princess" sounds like one part sniping and one part InsultOfEndearment.
* WeHaveBecomeComplacent:
** Princess Celestia worries that because she worked for about 1000 years to keep Equestria free from largescale war and crime, it is unprepared for the present threats, forcing them to rely on the displaced Kaiju to help them. However Godzilla is keen to commend her on the peace she'd help create, and that such is never to be looked down upon.
** According to Grand King Ghidorah, a long period of peace was what left the Xilian homeworld vulnerable to his first attack on it.
* WhamEpisode:
** Chapter 20: It's revealed that the mysterious entity directing the enemy Kaiju is [[spoiler: Bagan]], at the same time we find out that [[spoiler: the Tree of Harmony is actually sentient and has been subtly helping Equestria and the heroic Kaiju.]]
** Chapter 29: [[spoiler: [[BigBad Bagan]] tracks down and invades [[BigGood Harmony's]] realm and while he fails to kill her, he damages her, the Tree of Harmony, and the Elements of Harmony sufficiently that she's left totally cut off from Equestria, unable to even operate from behind the scenes like before until they can self repair. At the same time Enjin successfully captures Aria, absorbing both her siren magic and a large portion of the Kaiser Energy that she's siphoned away from X to transform back into a kaiju. Monster X, the only one left in the EG realm strong enough to fight Enjin is knocked into and sinks to the bottom of a frozen lake.]]
** Chapter 31: Not only does Xenilla [[spoiler:have Godzilla Senior's memories, he also has the Mothra family line's memories, and he attacked Senior all those years ago due to misinterpreting them]]. Godzilla Junior finally learns [[spoiler:Xenilla truly loved him and sacrificed everything to make him strong enough to survive]]. Finally, we learn [[spoiler:Grogar taught several of the previous MLP villains like Sombra, Tirek, Chrysalis, and Discord magic, and he's a being on par with Bagan and Harmony. Chrysalis is offered a VillainTeamUp with Bagan's forces by Legion, which she accepts but secretly intends to exploit it as [[TheStarscream part of her own plan to restore Grogar to his full might.]]]]
** Chapter 34: [[spoiler:King Sombra is brought back to life again and begins conspiring with Chrysalis to release Grogar. Sunset Shimmer is possessed by Enjin and infiltrates Equestria.]]
** Chapter 39: [[spoiler: [[ManipulativeBastard Grand King Ghidorah]] kicks off his plan. First he goads Monster X into fighting him, and after a short fight, breaks down Kaizer Ghidorah's cage, with the other hunters ForcedToWatch. Then [[BrainwashedAndCrazy Starlight Glimmer]] attacks Junior in Canterlot, not long after she took her sister's Cutie Mark. After luring him back to her village (with Rarity and Night Glider, a member of Starlight’s village who wasn’t in town when GKG kidnapped everyone else), Starlight shows that she’s taken [[WouldHurtAChild Chibi Moon]] hostage. Oh, and then [[FromBadToWorse freakin Nightmare]] [[GrandTheftMe takes over Junior during a moment of weakness.]] The result? Nightmare a.k.a Shin Godzilla.]]
** Chapter 41: [[spoiler:Irys discovers her true power as a Guardian Beast and is able to battle Kaizer Ghidorah to a standstill. Inside their mindscape, Monster X and Kaizer Ghidorah discover that Controller 011's soul was inside them all along. She reveals she actually committed suicide in an attempt to stop Kaizer's first rampage. Realizing his revenge is meaningless, Kaizer makes peace with X and they have a SplitPersonalityMerge. Controller 011 blesses X and Aria's relationship and he releases her to the afterlife. Rarity willingly becomes Nightmare Rarity again to battle the Enjin possessed Sunset Shimmer, and is in full control of herself. Rarity manages to exorcise Enjin from Sunset's body and then launch him towards Grand King Ghidorah, where he's vaporized by a BeamOWar Ghidorah is having with Godzilla Junior and Xenilla. Ghidorah's true motivation is revealed (only to the reader) to be that he's seeking to either become or find a being strong enough to kill Bagan. Junior and Xenilla, with help from [[BackupFromOtherworld their father's ghost]] manage to kill Ghidorah after a hard fought battle, but Ghidorah dies content believing they are strong enough to kill Bagan.]]
* WhamLine: In Chapter 35: Grand King Ghidorah [[spoiler:is having a conversation with [[BigBad Bagan]] and reveals something when Bagan notes he spared Megalon, Gigan, and Irys....]]
--> '''Grand King Ghidorah''': [[spoiler:“Because I know you about as well as you know me, Reijuu.”]]
* WhiteSheep: Now that we see Godzilla Junior all grown up, it's very clear he's become this. Compared to his adoptive [[TheDreaded grandfather]] and adoptive [[TrueNeutral father]], he's the first outright heroic Godzilla.
* WonderTwinPowers: Celestia and Luna's magical prowess is much stronger when they are near each other. They are still powerhouses when alone, but being anywhere near one another increases their power by magnitudes.
* WorfEffect: The BigBad establishes himself as the more dangerous or crafty of the villains by defeating long time fandom {{Big Bad}}s Grand King Ghidorah and Red.
* WrongContextMagic: As mentioned above (see MagicAIsMagicA), Terran and Equestrian magic work off different principles and can't be used to cancel out each other.
* XanatosGambit: The entirety of the "Enjin Arc" was this as set up by [[spoiler: Bagan, with the primary intent being luring in Harmony close enough to attack her realm directly. Enjin kills the sirens and Monster X/Kaizer Ghidorah and Bagan kills Harmony? Bagan just got a huge power source, removed a threat, and killed the only character who can stand on the same power level as him. Enjin succeeds but Bagan can't kill Harmony? Still get the power up and the damage to Harmony's realm from two PhysicalGod tier characters fighting it in with severe her connection to Equestria so she can't intervene. Both schemes fail? The damage is still done to Harmony's realm so she is out of the picture for a while and without any ties to link Enjin to his master, Monster X will still loyally serve Bagan.]]
* YearInsideHourOutside: Rodan spent about a day in the Shimmerverse, while a moment passed in main Equestria.
* YouAreInCommandNow: After the main kaiju were transported to Equestria, control of Godzilla's faction fell to Gamera, who's acting as "Regent" in light of the "King's" absence.
* YouDidntAsk: Xenilla [[spoiler: has been aware Princess Cadance was pregnant with her and Shining Armor's child a full eleven chapters before everypony else [[note]]because his ability to sense anyone touching crystals alerted him to two heartbeats during their fight with King Sombra[[/note]] He never said anything because he assumed they already knew and never had a reason to bring it up.]]
* YouAreNotAlone:
** Practically quoted by Princess Cadance during her BigDamnHeroes moment [[spoiler:to save Xenilla.]]
-->'''King Sombra''': "It ends here, the beast dies alone..."
-->'''Princess Cadance''': "He's not alone!" *fires a blast wave into Sombra*
** Later when Xenilla has gone into isolation due to trauma he experienced under Sombra's nightmare visions, Blade Dancer stubbornly refuses to be pushed away or scared off; knowing he's in pain.
** Rodan uses a metaphor of how stars are very far away from each other but look like they are next to each other to tell Phoenix Flamez that no matter how far she is from her friends and family, she is never alone.
* YouCanTalk: This was Xenilla's reaction when he first met Destroyah. At the time, no one knew she was sapient.
* [[YouCantGoHomeAgain You Can't Return To Your Realm]]: The situation with the first six kaiju that arrive. Dimension Tide brought them to Equestria and magic ''might'' be able to get them back, but for now they are stuck there. Mothra and Twilight are working on averting this.
* YouHaveOutlivedYourUsefulness: [[spoiler: After Bagan gets an example of the power Monster X has in his Kaizer Ghidorah form, he decides to kill him and take that power for himself.]]
* YourApprovalFillsMeWithShame: Adagio is ''crushed'' when she sees [[spoiler: a vision of her evil father praising her for helping him achieve his goals, and dreads she would make a good Wendigo]].
* YouShallNotPass:
** [[spoiler:Junior]] attempts this when it comes to [[spoiler:Grand King Ghidorah: going to fight him despite knowing it's likely a one way trip he can't win, so Chibi and the other civilians can escape. Thankfully, Xenilla has other ideas.]]
** [[spoiler:Destroyah]] later does this as well by [[spoiler:attacking the kaiju sized Giranbo in her pony form to hold her off long enough for the Crusaders to escape, knowing it's very likely if not certain Giranbo will kill her. The Crusaders and the spirits of Giranbo's victims manage to power her up to kaiju form, allowing her to survive.]]
* ZergRush: With the Albino Hyper Gyaos/Irys as the only exception, this is how the majority of Gyaos are able to threaten Godzilla Junior and Mothra Lea: both Defenders are able to kill a single Gyaos with little effort, but when their numbers are in the triple digits, they're a threat to even those two.
** Destroyah, remastering her ability to divide while keeping her consciousness constant throughout, divides into an army of aggregate and flying forms to overwhelm Giranbo.
[[/folder]]
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