History OutsideContextProblem / FanWorks

** The Reapers find their attempt at harvesting the galaxy blunted and defied by the sheer amount of non-Element Zero technologies (HumongousMecha, cloaking, energy weapons, etc) used by their enemies, which they have no defense against. Not to mention things like metahumans, Kryptonians, Tamaranians, Pokemon...

* Fics that have the ''VideoGame/PokemonLegendsArceus'' plotline be done instead by [[Anime/PokemonTheSeries Ash Ketchum]] quickly fall into mass confusion for the Hisuian side. In stories like [[https://archiveofourown.org/series/2812684 Light up the Sky A.U]] and [[https://www.fanfiction.net/s/14059014/1/ Pokemon Hisuian Journeys]] Ash's skill with Pokemon befriending and training and mindset are so different from that of the Galaxy Team or Clans that the two struggle to comprehend him, while also being well aware that Ash is basically strong enough to survive Hisui anywhere so they can't just hope he just dies from the elements or wild Pokemon attacks.

* In ''Useless'', the third story in ''Fanfic/TheNegotiationsverse'', Rainbow Dash admits that she can't understand why Equestria could not overcome the human race when she and her friends already fought against and defeated beings that were basically {{Physical God}}s in comparison prior to the transition to Earth. [[HumansAreWarriors Celestia really shouldn't have pushed humanity]] [[CorneredRattlesnake against the wall]].

* ''Fanfic/MonstrousCompendiumOnline'': The 74th floor boss turns out to be a demon. ''Not'' a demon-themed lump of code, an actual demon summoned from the Abyss and allowed into the game. [[GlitchEntity The graphics are constantly glitching during the fight because the system doesn't know how to handle it]]. The only reason they manage to survive is because [[spoiler:Klein unexpectedly receives the Call, becoming a paladin of the Silver Flame and giving them enough divine magic to fight back]]. The players who understand what is happening are terrified of the implications, because the demon could have followed their souls back to Earth and invaded a world with no magic to fight it. In fact, since they didn't actually kill it, just banished it, that still might happen. This produces another round of cursing Kayaba for allowing such a thing to happen.

* "Fanfic/HarryPotterAndTheMethodsOfRationality": Due to his unique grounding in the field of science and his ''terrifying'' creativity, Harry [[spoiler:(and technically Voldemort)]] is this to the entire Wizarding World given how hopelessly backwards it is. Even Muggleborns, who at least ''know'' of mundane technologies, are stymied by some of the solutions he concocts.
** This goes so far that it circles back on Harry himself now and then. For example, his combination of a broomstick and [[spoiler:a ''rocket engine'']]... only realising after the fuse is lit that the two are incompatible, by dint of each subscribing to ''totally different physics models!''

* ''Fanfic/WhereWeDontBelong'': The very existence of the Ouroboros is this to the respective antagonists. Alvis even notes that Noah [[ImmuneToFate doesn't appear in any of Zanza's visions]], which Shulk later confirms. [[spoiler: This is ultimately the reason Ontos kept X and Y alive, despite the mutual animosity between them; they want to minimise the risk of an already bad situation becoming worse.]]

** Human-based magic is this to [[spoiler: Grometheus]]. When Amity uses the magic she learned from Doctor Strange in her fight against it [[spoiler: at Grom]], it's completely unable to fight back and is quickly destroyed by her.

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* As a general rule, this is fairly common in {{crossover}} fanfictions, as characters from both franchises usually have an area of problems they have to deal with, while the other characters/problems tend to be outside of what they have ever dealt with and can often go against how their magic, science, and/or politics work. This is particularly common in crossover fics between science fiction and fantasy stories.

* {{Downplayed|Trope}} in ''Fanfic/InfinityTrainStarFinder''. While the train is a completely unknown and out-of-place element in mundane worlds, it isn't really a completely strange subject for more fantastical worlds.

** The Dark Elves are belived to have gone extincte after their major fight against Asagard, so it's a shock to Izuku to see one of them amongst the villains attacking the USJ. In truth, they have actually joined Thanos and their continued existence has been concealed by Loki.

* ''Fanfic/ADevilAmongstWorms'': [[{{Anime/ChainsawMan}} Makima]] is this to the [[{{Literature/Worm}} world of Earth-Bet]], as a supernatural being with powers and abilities completely disconnected from those stemming from the Entities' Shards. As further evidence of her outside-context status, she's shown to [[GoMadFromTheRevelation have a severely deleterious effect on Thinkers who try to analyze her]], with Tattletale experiencing splitting headaches when she tries, and several other Thinkers tasked with analyzing her experiencing brain hemorrhaging. In the case of the Simurgh, while Makima's not an outright blind spot like Scion, it's shown that she's something of a blur in the timeline, that while capable of being seen, cannot actually be understood by the HumanoidAbomination.

* ''Fanfic/MischiefMHA'': As a common example, there is not enough people or heroes aware of aliens and the supernatural, and they are not prepared to handle threats as such. As for individual examples:
** The Dark Elves are belived to have gone extincted after their major fight against Asagard, so is a shock to Izuku to see one of them amongst the villains attacking the USJ. In truth, they have actually joined Thanos and their existance have been concealed by Loki.
** Gorr. No one expected the God Butcher to still be alive centuries after his last appearance, so his galaxy-wide RoaringRampageOfRevenge catches everyone off guard. Even Loki, one of the biggest masterminds in the story admits that Gorr's sudden appearance throws a wrench on his carefully planned schemes.
** [[spoiler:Mephisto. While his grudge against Loki is nothing new, nobody expected him to hand Tenya the Ebony Blade and make Tensei Ghost Rider's host, causing even more problem to the villain's side and forcing them to step their games.]]
** Two heroic and literal examples happen during the Final Exams. Exploring the LoopholeAbuse of Nezu's phrasing about the rules for the exam, Izuku arranges for Thor to join the students and take on All Might. On a rather ironic twist, Nezu also makes use of said loophole and brings Hawks to face the students after they seemingly defeat the teachers.

* ''[[https://archiveofourown.org/works/26803333/chapters/65388430 Disciples Rising]]'', features the titled antagonists. No one besides All for One and Garaki were aware of the existance of the Disciples, so their arrival at the story brings havoc at the plans of both Heroes and Villains.

** But all of it pales in comparison to [[spoiler: Ultron himself, an advanced Artificial Intelligence that's capable of infiltrating the entire computer systems of the Galaxy and easily digs up even the most deeply hidden secrets of both the Jedi and Sith. When he finally revealed himself with a simultaneous droid attacks throughout Galaxy, he managed to establish himself as third party of the Clone War that seeks the destruction of both the Republic and Separatists and throws the two sides into complete disarray.]]

** The [[spoiler: Dementors]] [[SealedEvilInACan imprisoned]] in the MobileMaze on Monster Island catch everyone off guard, due to being [[spoiler: Wizarding World]] monsters that haven't been seen on the Boiling Isles in centuries. As such, none of the Witches present know how to deal with them [[spoiler: and despite being from the same world, Harry and Ron have never encountered them and are therefore equally clueless]].

* The [[ComicBook/{{Venom}} Klyntar]], especially the Crescent Rose symbiote, prove to be this to [[WebAnimation/{{RWBY}} Remnant]] in ''[[https://www.fanfiction.net/s/13957545/1/RWBY-Rose-In-Black RWBY: Rose In Black]]''. Ruby's bond with the aforementioned symbiote quickly makes her a NormalFishInATinyPond compared to the rest of the cast [[spoiler: until Velvet and the surviving members of Team JNPR get their own]], leaving most of Beacon and much of Salem's group blindsided by her unexpected new abilities, greatly contributing to her status as TheDreaded. Even as Roman and Neo learn more about the symbiotes, particularly their [[KryptoniteFactor weakness to fire]], they are ''still'' vastly outmatched due to the difference in sheer power between them and their battles tend to end with retreat. [[spoiler:Cinder's lack of knowledge or understanding of the Klyntar also leads to the Battle of Beacon being [[GoneHorriblyWrong completely derailed]], from her being exposed as a criminal during the dance to the Black Queen virus being neutralized by the Crescent Rose symbiote, and she is left utterly defeated and out of options by the time she wraps her head around what the symbiotes really are.]]

* ''Fanfic/WitchingHour'': As we find out at the end of the story, there's a case of this due to the story being a HistoricalAU set in Medieval times. [[spoiler: Technology in this universe hasn't advanced beyond a medieval level... on ''Earth'', that is. Zim comes from a planet with more advanced alien technology than anything the Kingdom of Doomsvillia could ever conceive of. With it, he projects a hologram of Gaz riding a broom into the sky, zaps Iggins with an invisible death ray right after she hits him, and uses the robotic legs of his PAK to climb into her tower and move her into a field where he has set up what looks like a demonic ritual with slaughtered cows and blood. All of this allows him to frame her for witchcraft without anyone being the wiser.]]

* ''Fanfic/HarryPotterAndTheBoilingIsles'': Harry confounds both Eda and Luz because they've never encountered humans with innate magical abilities before, let alone [[{{Masquerade}} a disguised community of magical humans]] just like him.

* In ''Fanfic/TheBridge'', it's telling that in a crossover that involves kaiju, equestrians, and humans the Apex Windigos prove to be this for '''everyone'''. Zephyrus, Boreas, and Notus pre-date Equestrian history by a wide margin, were creations of an evil god barely anyone even knows once existed centuries ago, and are extremely hard to discover, track, and actually damage due to lack of weaknesses. All while they continually grow stronger off the conflict and a plan no one is able to predict. Even their own AntagonisticOffspring didn't know they were still alive nor what they would want.