History Fanfic / FateGenesis

* AdaptedOut: [[spoiler:True Assassin is the only major character from ''Fate/stay night'' to never appear, as Zouken simply forces the still living False Assassin into a contract rather than using his corpse to summon Hassan of the Cursed Arm.]]

* DraggedIntoDrag: [[spoiler: Part of Rin's planned punishment for Archer's betrayal is forcing him into a French Maid outfit]].

* FreudianExcuseIsNoExcuse: After his HeelFaceTurn, Lancer explains to Sonic and co. that Kriei only had him kill because he was unable to supply him with mana. Amy quickly mentions the families of his victims, but Lancer can't actually be punished for the murders as he's a Servant. Sonic amends this by giving Lancer an atomic wedgie that stretches so far, it reaches all the way to the [[VisualNovel/{{Tsukihime}} Tohno Mansion]]. He also tricks him into eating a chili dog, causing him to freak out a bit.

* HeroWorship: Shirou, in a subdued way, does this towards [[TheParagon Sonic]], both for the fact he's legitimately a hero and how Sonic gives him advice and encouragement to pursue his dream of a Hero of Justice instead of berating him for it like everyone else he ever met. Archer compares it to a kid realizing Santa Claus is real [[NotSoAboveItAll and notes deep down he's actually a little jealous]] since ''he'' never had that kind of encouragement growing up.

* CelebrityParadox: Almost. In an early chapter, Sonic finds a UsefulNotes/SegaGenesis and plays ''VideoGame/AlteredBeast'' on it. He notes that [[LeaningOnTheFourthWall he hasn't seen one of them in years]]. In either Sonic's world or the fate/stay world, who was Sega using as a mascot in the absence of Sonic? VideoGame/AlexKidd still?

* TheBigBadShuffle: As a result of the story's BigBadEnsemble, there's no single central antagonist. Instead, the villain who poses the most immediate threat is generally the one heroes go after.

** Sonic prepares to try his hand at sparring with Saber and tells a surprised Shirou and Saber he's not too bad with swords himself, offhandedly mentioning that he was [[VideoGame/SonicStorybookSeries another world's King Arthur]]. This is before he sees Saber use [[SwordBeam Excalibur]] and realizes with surprise she's ''this world's'' Myth/KingArthur, recognizing her sword despite its different shape even before she calls out its true name.

** [[spoiler: Sonic banishes Avenger from the Holy Grail in a manner similar to how he sealed [[VideoGame/SonicStoryBookSeries Erazor Djinn]]. With ThreeWishes to boot!]]

''[[https://www.fanfiction.net/s/11150281/1/Fate-Genesis Fate Genesis]]'' is a VisualNovel/FateStayNight and Franchise/SonicTheHedgehog crossover by [[https://www.fanfiction.net/u/381645/Cybertoy00 Cybertoy00]].

* VillainousBreakdown: [[spoiler: Avenger / Angra Maiyu goes through one of these after Sonic uses Saber's Command Seals to curb his JackassGenie nature. It's very similar to [[WesternAnimation/SonicSatAM Robotnik's breakdown]] from the last episode of his series.]]

** Several characters who were absent during the events of the story show up during the epilogue: [[LightNovel/FateZero Waver Velvet]] converses with Rin over the aftermath of the Holy Grail War, [[LightNovel/FateApocrypha Yggdmillennia]] gets name-dropped by Stuart during his conversation Bazett, Amy tells [[VideoGame/SonicRush Blaze]], [[VideoGame/SonicAdvanceTrilogy Cream and Cheese]] about her adventures in the Fate universe, [[VideoGame/SonicAdventure2 Rouge]] and [[VideoGame/SonicAdventure Chaos]] are waiting for Knuckles at the Master Emerald's alter with the latter having been serving as substitute Guardian while Knuckles was away, [[VideoGame/KnucklesChaotix Charmy]] comes over to Tails' house to return a video game he burrowed, and [[VideoGame/SonicAdventure Big and Froggy]] are seen fishing with [[spoiler:Shinji, who's found himself [[TrappedInAnotherWorld stuck]] in Sonic's world.]]

** In Chapter 22 [[spoiler: Berserker is killed by a dark version of [[LightNovel/FateZero Zero!Berserker]]]]

** [[VisualNovel/FateHollowAtaraxia Bazett]] partners up with Amy. [[spoiler:Later, Avenger appears and takes on a copy of Shirou's form, and then starts fighting with the [[AllYourPowersCombined powers]] of [[LightNovel/FateZero the fallen Servants of the Fourth War]]]].

** During epilogue, Stuart recruits Bazett and mentions that they're going to Romania to investigate the [[LightNovel/FateApocrypha Yggdmillennia]].

* UndeadTaxExemption: When Stuart tries to do a background check on the Servants who have appeared publicly, such as Saber and Caster, he realizes that he can find no official record of any of them existing. The most he finds is that the credentials Saber used when she entered Japan during ''LightNovel/FateZero'' were falsified.

''[[https://www.fanfiction.net/s/11150281/1/Fate-Genesis Fate Genesis]]'' is a VisualNovel/FateStayNight and VideoGame/SonicTheHedgehog crossover by [[https://www.fanfiction.net/u/381645/Cybertoy00 Cybertoy00]].

* OutDamnedSpot: Shinji does this after learning [[spoiler: the details of Sakura's "training"]].

** [[spoiler:While Metal Sonic can comprehend and even mimic Gae Bolg's time manipulation abilities to an extend, he ''can't'' analyze Avalon the same way, since as a creation of the Fairies it's beyond the understanding of mortal science.]]

** Many of the robots Eggman uses are based on his minions from ''VideoGame/DoctorRobotniksMeanBeanMachine''.