History Fanfic / EquestriaAcrossTheMultiverse

** Werebeast Fluttershy is a Wereskunk, as is anyone she infects who also get a copy of her personality in their transformed state. As with a real skunk, she can spray a horrible smelling liquid from the base of her tail, which is actually [[HeartIsAnAwesomePower extremely effective]]. She also infects Ponyland!Kabuto and turns him into one, which the guards he ends up with find out the hard way.
** The group finds a world were skunks evolved to sapience instead of ponies, though as with real skunks they only spray when forced. They can also do various things with their spray thanks to magic.

** For his many war crimes under the invading Flim-Flam Brothers, Commander Wind Rider is handed over to [[GoodIsNotNice the Hegemony]] for forced labor, loading starship munitions by hoof. [[KickTheSonOfABitch And he deserves every bit of misery he gets.]]

* DropTheHammer: Twilight seals a Lesser Demon in a hammer during the Lighting the Darkness Arc. Due to the nature of the spell, this also makes said hammer magical in nature, and thus it becomes a weapon capable of harming Yomi and his minions.

** The Everfrost from the Deep Blue Sea Arc is freezing the world, and has a literal {{Dragon}} Frost Talon who can breathe ice.

''Equestria: Across the Multiverse'' is an ongoing RoundRobin ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fanfic series by [=BrutalityInc=] of ''Fanfic/CodexEquus'' fame, Godzillawolf and Alex Warlorn of the ''Fanfic/PonyPOVSeries'' fame, and many other writers.

* RoswellThatEndsWell: One world the mane six arrive in features this. ''They're'' the aliens.

** Tales!Chrysalis wanted to take over the Isle of Pony and form her own kingdom...her final fate is [[spoiler: being banished to a habitable, but utterly lifeless, Eqqus in a dead universe; ''and'' she's made partially immortal so she can't simply commit suicide or starve herself. There are also myriad security systems to make sure she can not escape or be rescued, '''EVER'''. [[AndIMustScream She'll be alone forever, in a kingdom of one.]]]]

* OffhandBackhand: During a fight with some Warlocks, Rainbow Dash manages this.

* AluminumChristmasTrees: The double planet system the Twin Worlds Arc takes place on is actually possible to happen in real life, though two identically sized planets would be extremely rare.

** After the Mainline Equestrian Jaunters arrived in an Equestria where the Ponies live with and frequently does 'PSAs' with an unseen 'Audience' brought the light the existence of mysterious 'Fourth-Wall Entities' observing and influencing certain world-lines like they are an entertainment show, a report's addendum reveals the Multiverse Alliance has began to consider developing 'Memetic Agents' that could subliminal influence the thoughts and minds of 'Audience', 'Writers' and 'Producers' entities, as defensive measures to prevent them from starting to influence those world-lines in negative ways e.g. making those settings DarkerAndEdgier, leading to death and misery for those inhabiting them. And if those agents fail, the report recommends with clinical casualness developing stronger, weaponized '[[Wiki/SCPFoundation Memetic]] [[BrownNote Kill Agents]]' that would, ahem, 'permanently sever' their influence from those Equuses. One of these R&D programmes being considered is even named '[[ShoutOut Project]] [[Literature/TheLaundryFiles Basilisk]]'.

** After the Mainline Equestrian Jaunters arrived in an Equestria where the Ponies live with and frequently does 'PSAs' with an unseen 'Audience' brought the light the existence of mysterious 'Fourth-Wall Entities' observing and influencing certain world-lines like they are an entertainment show, a report's addendum reveals the Multiverse Alliance has began to consider developing 'Memetic Agents' that could subliminal influence the thoughts and minds of 'Audience', 'Writers' and 'Producers' entities, as defensive measures to prevent them from starting to influence those world-lines in negative ways e.g. making those settings DarkerAndEdgier, leading to death and misery for those inhabiting them. And if those agents fail, the report recommends with clinical casualness developing stronger, weaponized '[[Wiki/SCPFoundation Memetic]] [[BrownNote Kill Agents]]' that would, ahem, '[[KillEmAll permanently severe]]' their influence from those Equuses. One of these R&D programmes being considered is even named '[[ShoutOut Project]] [[Literature/TheLaundryFiles Basilisk]]'.

** Another universe has fashion as this, because in that universe [[UpToEleven being fashionable enough can make you a]] PersonOfMassDestruction and poses are equal to KiManipulation.

* ThereAreNoTherapists: Subverted UpToEleven: the jaunters find Psychotherapist Equestria, which is [[ExactlyWhatItSaysOnTheTin a universe where everyone in Equestria is a licensed therapist]]. [[spoiler:Garden!Cheerilee]] was sent here after her defeat for treatment among other things.

** [[spoiler:''Fanfic/CheerileesGarden [[SerialKiller Cheerilee]]'' makes one thanks to Cheerilee TalkingTheMonsterToDeath. Somewhat more justified however, as it happened before she actually killed anyone and thus hadn't gone fully over the edge. [[SurprisinglyRealisticOutcome she's still in an asylum however]].]]

* SurprisinglyRealisticOutcome
** The jaunting ''did'' give Equestria, its allies, and their heroes a huge power up...but you can't import and invent a lot of new technology (and in this case magic) and integrate it into society and ''only'' good people will get their hands on it. Villains of various groups manage to get their own tech upgrades and ''don't'' [[VillainForgotToLevelGrind forget to level grind.]]
** A massive war with a extradimensional invasion fleet happened. While the heroes ''did'' win, there was still a lot of wrecked warships and robots scattered everywhere. This gave factions like organized criminal syndicates and the Storm King the chance to salvage the advanced technology and upgrade themselves.
** As the tensions and bickering within the Multiverse Alliance shows, even when everyone agrees to work together, doesn't mean that they would all get along without complications; the differences between participants with so many radically different environments, culture, mindsets and protocols will inevitably be the source of much internal conflict.
** Riot and his gang are a trio of normal teenagers using some respectable weaponry, but have no clue how to actually fight because they've been attacking worlds incapable of defending themselves. When they run into Kimono, who not only has PoweredArmor but has been taking defensive martial arts lessons, they don't stand a chance and are easily subdued. Riot's katana is also a cheaply-made one he just bought online, and when it comes to swords, YouGetWhatYouPayFor typically. As a result, the sword gives out and snaps relatively quickly.
** The Tales Seven received superpowers from the Mane Six in an accidental SuperEmpowering as well as PoweredArmor, and thus are able to hold their own and defeat the Chrysalis Network's agents. However, Teddy, Ace, and Lancer are a trio of normal, though athletic, teenaged boys who haven't even fully learned Earth Pony magic yet. When confronted by ''one'' Neo-Hooviet agent, they have no choice but to run and can only fight back by setting improvised traps and keeping as far away as possible. Even when they ''do'' finally fight back directly it's only once they've managed to get their pursuer into a situation that gives them an edge and disarmed him of his gun. Even then, they have to give it their all to beat him and have close calls.
** Patch has SuperStrength even by Earth Pony standards, but she's also a teenager and even with her PoweredArmor doesn't weight enough to stop a car or a forklift even if she has the sheer strength to do so, requiring her to brace herself against something with enough weight or support to let her put that strength to good use. She's tried to learn the 'anchoring' technique from Platformer Equestria, but this trope ''also'' ensues when she's still a novice and it gives out when she first attempts in.
** The Chrysalis Network was one of the greatest military forces on the planet and nearly conquered the Isle of Pony despite the Alliance's efforts. However, after their defeat there with many of their best agents being lost, they ultimately don't stand a chance when the rest of the world retaliates against them. Also, attempting to nuke the major capitals of the world tends to result in the world coming for your blood.
** The Tales 7 might be superheroes who have accomplished a lot (including directly saving the Isle of Pony and Olympus Station), but they're still teenagers in high school. Their parents still worry about them (which is also true of the Digidestined 7) and they aren't allowed to go on Jaunts without Twilight as chaperone.
** The Digidestined 7 have managed to handle themselves and be great heroes, but being hunted by a psychopathic maniac trying to hunt you for sport is [[HarmfulToMinors naturally terrifying and traumatic]]. As such, all of them are still terrified of Huntermon even after his defeat.
** When Catrinamon proves herself to be a world threateningly powerful being, Twilight instantly tries to send the Tales 7 to safety, as that's still far greater of a threat than anything they've faced head on before (as they only faced Chrysalis's forces and her worn down in the final fight before that) and she promised their parents she'd keep them safe. She only relents when it becomes obvious that Catrinamon will win if they leave and endanger thousands if not millions of people, and even then upgrades their suits as best she can for the fight.
** The Mechanicum see artificial intelligence outside specific cases as inherently dangerous and evil on a religious level and thus should be immediately destroyed. Princess Apple Bloom of Bright Future Equestria is a Goddess of Progress and Invention who's also the mother goddess of a race of AI ponies she created. They don't get along with each other, and laws had to be passed and clarify treatment of AI in every possible situation imaginable just to keep them from coming to blows over it (something everyone is justifiably afraid of, given they ended up in HumongousMecha battle over a science fair where they ''weren't'' actually trying to hurt one another and represent two of the strongest if not ''the'' strongest factions in the Alliance).

** The Guardians of Innocence, being MagicalGirls, have "Time to play!" as theirs.

* AdultFear:
** Cheerilee is naturally horrified to meet her ''Fanfic/CheerileesGarden'' counterpart and realize she's attempting to murder her class.
** Both the Tales 7's parents and their Digimon Tales world counterparts are scared and worried for their children being superheroes and {{The Chosen One}}s to save two worlds respectively, though both versions of them also realize their children doing so is ''necessary'' and don't oppose them doing so.

* FeedItABomb: [[EnemyMine Spike and Garble]] end up destroying Metal Spike this way. He and Metal Twilight have a habit of [[OneWingedAngel absorbing destroyed robots to grow bigger and stronger]], but the last time Metal Spike tries it, Spike manages to set a missile he's absorbing to explode with Garble's help. The end result Metal Spike being destroyed in a ChainReactionDestruction due to that missile setting off the other weapons he absorbed.

* AnIcePerson:
** The Everfrost from the Deep Blue Sea Arc is freezing the world, and has a literal {{Dragon}} Frost Talon who can breathe ice.
** Rowena from the Ponies and Giants Arc is a Frost Giantess with an arsenal of snow- and ice-based magic. She's also Rarity's counterpart in that universe.
** The ponies from Ice Equestria live in super low temperatures, and are freezing cold to touch. Their Cryomancer armor exploits this by using the low temperatures they need to survive for offensive means.
** The 'Hidden' Pegasi from Ponyland's universe never greatly explored weather manipulation as their prime selves did, instead focusing on manipulating water vapor in the air. Among the things this let's them do is create various kinds of ice, including blue ice (the hardest known form of ice).

** [[spoiler:''Fanfic/CheerileesGarden [[SerialKiller Cheerilee]]'' makes one thanks to Cheerilee TalkingTheMonsterToDeath. Somewhat more justified however, as it happened before she actually killed anyone and thus hadn't gone fully over the edge. [[RealityEnsues she's still in an asylum however]].]]

* RealityEnsues:
** The jaunting ''did'' give Equestria, its allies, and their heroes a huge power up...but you can't import and invent a lot of new technology (and in this case magic) and integrate it into society and ''only'' good people will get their hands on it. Villains of various groups manage to get their own tech upgrades and ''don't'' [[VillainForgotToLevelGrind forget to level grind.]]
** A massive war with a extradimensional invasion fleet happened. While the heroes ''did'' win, there was still a lot of wrecked warships and robots scattered everywhere. This gave factions like organized criminal syndicates and the Storm King the chance to salvage the advanced technology and upgrade themselves.
** As the tensions and bickering within the Multiverse Alliance shows, even when everyone agrees to work together, doesn't mean that they would all get along without complications; the differences between participants with so many radically different environments, culture, mindsets and protocols will inevitably be the source of much internal conflict.
** Riot and his gang are a trio of normal teenagers using some respectable weaponry, but have no clue how to actually fight because they've been attacking worlds incapable of defending themselves. When they run into Kimono, who not only has PoweredArmor but has been taking defensive martial arts lessons, they don't stand a chance and are easily subdued. Riot's katana is also a cheaply-made one he just bought online, and when it comes to swords, YouGetWhatYouPayFor typically. As a result, the sword gives out and snaps relatively quickly.
** The Tales Seven received superpowers from the Mane Six in an accidental SuperEmpowering as well as PoweredArmor, and thus are able to hold their own and defeat the Chrysalis Network's agents. However, Teddy, Ace, and Lancer are a trio of normal, though athletic, teenaged boys who haven't even fully learned Earth Pony magic yet. When confronted by ''one'' Neo-Hooviet agent, they have no choice but to run and can only fight back by setting improvised traps and keeping as far away as possible. Even when they ''do'' finally fight back directly it's only once they've managed to get their pursuer into a situation that gives them an edge and disarmed him of his gun. Even then, they have to give it their all to beat him and have close calls.
** Patch has SuperStrength even by Earth Pony standards, but she's also a teenager and even with her PoweredArmor doesn't weight enough to stop a car or a forklift even if she has the sheer strength to do so, requiring her to brace herself against something with enough weight or support to let her put that strength to good use. She's tried to learn the 'anchoring' technique from Platformer Equestria, but this trope ''also'' ensues when she's still a novice and it gives out when she first attempts in.
** The Chrysalis Network was one of the greatest military forces on the planet and nearly conquered the Isle of Pony despite the Alliance's efforts. However, after their defeat there with many of their best agents being lost, they ultimately don't stand a chance when the rest of the world retaliates against them. Also, attempting to nuke the major capitals of the world tends to result in the world coming for your blood.
** The Tales 7 might be superheroes who have accomplished a lot (including directly saving the Isle of Pony and Olympus Station), but they're still teenagers in high school. Their parents still worry about them (which is also true of the Digidestined 7) and they aren't allowed to go on Jaunts without Twilight as chaperone.
** The Digidestined 7 have managed to handle themselves and be great heroes, but being hunted by a psychopathic maniac trying to hunt you for sport is [[HarmfulToMinors naturally terrifying and traumatic]]. As such, all of them are still terrified of Huntermon even after his defeat.
** When Catrinamon proves herself to be a world threateningly powerful being, Twilight instantly tries to send the Tales 7 to safety, as that's still far greater of a threat than anything they've faced head on before (as they only faced Chrysalis's forces and her worn down in the final fight before that) and she promised their parents she'd keep them safe. She only relents when it becomes obvious that Catrinamon will win if they leave and endanger thousands if not millions of people, and even then upgrades their suits as best she can for the fight.
** The Mechanicum see artificial intelligence outside specific cases as inherently dangerous and evil on a religious level and thus should be immediately destroyed. Princess Apple Bloom of Bright Future Equestria is a Goddess of Progress and Invention who's also the mother goddess of a race of AI ponies she created. They don't get along with each other, and laws had to be passed and clarify treatment of AI in every possible situation imaginable just to keep them from coming to blows over it (something everyone is justifiably afraid of, given they ended up in HumongousMecha battle over a science fair where they ''weren't'' actually trying to hurt one another and represent two of the strongest if not ''the'' strongest factions in the Alliance).

** Users of Fabulousity (a power that people from a specific Equestria can use powered by how fashionable they are) do this with ''poses'', which become KiAttacks in their hands.

** Another universe has fashion as this, because in that universe [[UpToEleven being fashionable enough can make you a]] PersonOfMassDestruction and poses are equal to KiAttacks.

** Star Swirl defeats one of the Ram Necromancers that the Storm King got on loan from the Shadow Realm by [[Disney/TheSwordInTheStone shapeshifting into a germ and infecting him after the Necromancer turned into a dragon.]]