Events in FanFic that are not possible. '''Only list examples that fit the description.'''

* ''FanFic/ShinjiAndWarhammer40k'': In Anime/NeonGenesisEvangelion canon, AT-Fields are only a defensive shield. Repeatedly this is stated to be what they are and what they do. This fic uses them to do things that are literally impossible.
* ''Fanfic/BraveNewWorld'': [[GadgeteerGenius Leo]] himself said making a "EnhanceButton" is impossible but "I figured out how to make one of my own in spite of that because I'm awesome." This disregard for physical laws makes [[OnlySaneMan Pikachu's]] eye twitch.
* ''Fanfic/NobodyDies'': Jet Alone Prime [[spoiler:generates an AT-field despite not being an Evangelion and Mana uses it to collapse an Angel's AT-field]].
* ''Manga/ReTake'': Shinji [[spoiler:[[SingleStrokeBattle swats Arael]] out of the sky with his AT Field]]. Yes, a purely defensive ability somehow turned into a weapon.
* ''Fanfic/MyLittleDenarians'': In ''Literature/TheDresdenFiles'' canon it is thought impossible to destroy [[spoiler:a Denarian's coin. The most you can normally do is kill the host and seal away the coin. Harry is understandably shocked when Lash's defeat of Lasciel results in the coin being destroyed.]]
* ''Roleplay/TheDigimonEpicsDevilsAscent'' has Sir Percival/Magnamon, The Knight of Miracles. His shtick is doing the impossible.
* Ash's Squirtle in has even broken ''space'' in ''FanFic/AshesOfThePast''. To quote Dexter:
--> '''Dexter''': Also, battles will almost invariably end in some improbable manifestation of power.
** Most of what Ash's Squirtle does is classified as impossible, but he somehow manages to still ramp it UpToEleven when he [[spoiler:creates ''Squirtilite '''and mega evolves into Mega Squirtle''''']].
* In ''FanFic/ElementalsOfHarmony'', Spike's fire breath apparently burns faster than entropy. The story [[LampshadeHanging acknowledges]] that this shouldn't make sense, but dragonfire, like dragons, is magical enough to make it work regardless.
* ''Roleplay/ActiveDuty'': Director Tamlin has the [[BiggerOnTheInside entire Tamlin House]] tattooed onto his body. [[MindScrew Both the inside AND out.]]
* FanFic/GameOver: SC does do some things that circumvent other's expectations as to what is possible, although there's always the question of whether or not it always ''was'' possible and the other people just didn't think it was. SC's claim is that "anything is possible... [[BoringInvincibleHero except beating Kat]]."
* ''FanFic/HarryPotterAndTheMethodsOfRationality'': Harry believes HumansAreSpecial and this somehow gives him the power to destroy dementors. In canon, the best one could do is make them go away.
* Harry performs supposedly impossible feats regularly in ''FanFic/TheWizardInTheShadows''. Ollivander lampshades it.
* "Gensoukyou Great Sports Day - 200 Yojana in a flash". At the start, Youmu's power just lets her [[SuperSpeed run very fast]] but she lattter uses the same spellcard to exist ''outside space and time''; the author even put in one of those stock AGodAmI scenes.
* ''RolePlay/{{Planeocracy}}'': ''[[MobileSuitGundam The Big Zam's]]'' I-Field neutralizes the attacks of [[{{Gundam00}} Lyle]] and [[VideoGame/SuperRobotWarsOriginalGeneration Katina]]... until Cherudim went Trans-AM and Lyle fired a concentrated sniper rifle/rifle bit shot at the field's generator. Now, keep in mind the I-Field neutralizes beams. It punched through.
* ''FanFic/WakingNightmares'': Harbinger qualifies becuase he's an earth pony and earth ponies do not have special powers like the unicorns and pegasi. Yet, he's faster than a train.
* ''Fanfic/MyLittleCastlevania'': Fluttershy’s animals turn on her in one scene. [[WhamEpisode Which is where we really start to understand just how powerful Dracula’s influence is, since Fluttershy’s special talent is her connection with animals.]] Yet, Dracula is able to control the animals she raised herself!
* ''FanFic/TheInterference'': Hyperion stole Terra's Keyblade with alchemy.[[DudeWheresMyRespect No one seems to recognize this impossible feat.]]
* ''Fanfic/TheWorstBakersInEquestria'': Those who compete in such a competition are so horrible their cooking breaks the laws of physics and create malevolent bread golems.
* ''Fanfic/TheLifeAndTimesOfAWinningPony'': {{Invoked|Trope}}. Most of Rainbow Dash's plans boil down to "throw myself into the thick of things with no forethought, then make the impossible happen."
* ''FanFic/{{Echoes}}'': Naruko can trick [[SerialEscalation herself, her mindscape, a emotion reading monster and her own soul]] into thinking she is completely pure of heart.
* ''Fanfic/TimeLordsAndTerror'': There was a storm in the first chapter that was "outright contradictory to all known magical laws." Trying to quantify the impossible event that happened over her head makes Twilight shout “AAAAAARRRGH!!!!”
* In ''[[Fanfic/AradsStardust Stardust]]'', Twilight's abilities break all the laws of physics Vahlen knows and their usage doesn't register on any of XCOM's sensors.
* A common theme in GloriousShotgunPrincess is that "this is impossible" means ''nothing'' to an Exalt.
* A MyLittlePonyFriendshipIsMagic fanfic titled 'Titanomachy' features Twilight hatching a plan that only the most desperate pony would try, using a formula that involved quantities of magic involving a constant she had computed but was certain wasn't done right, as it was 'in the range of the speed of light, in pony-lengths per second, times itself - a literal unbelievably large number.'. Luna later comments on this. Two stories later, so do the Fates, and they're not very happy about it. [[spoiler: It involves basically jumpstarting her own corpse with the leftover corrupting essence of an evil god. So yes, she is in a way rather desperate at this point.]]
* ''FanFic/TheInfiniteLoops''
** This is hilariously common due to Loopers applying solutions from one universe to problems in an entirely different universe which bypass the given ruleset making something impossible. Special mention, however, goes to a non awake [[VideoGame/MegaManClassic Dr. Wily]] bypassing the antitech barrier in ''FanFic/TheConversionBureau'' setting with his army of robots; not destroying it, just bypassing it.
** [[WesternAnimation/TheGrimAdventuresOfBillyAndMandy Billy]] is an MLE ''because of this''. Through nothing but his [[LethallyStupid sheer, lethal stupidity]], Billy has managed to accomplish what even loopers deem impossible, including crashing '''''three safe-mode punishment loops'''''. For those not in the know, punishment loops lock away a looper's subspace pocket, restricts their abilities to baseline, and railroads them to the plot of whatever universe they're in. They are among the most stable loops in Yggdrasil -- crashing them is ''literally'' suppose to be impossible. The mere fact that Billy managed to crash ''three'' speaks volumes of what he is capable of in his idiocy, leading to him being classified as a danger to not only himself, but to other loopers and Yggdrasil as a whole.
** He got [[spoiler:'''''[[Anime/NeonGenesisEvangelion GENDO IKARI]] to loop. Loopers are determined by how close they are to their respective loop's anchor. [[spoiler:Shinji]] despises [[spoiler:his father]] so much that it was a guarantee that he'd never loop, especially considering how much the rest of the multiverse despises him as well. Then, one day, Billy replaced [[spoiler:Shinji]] for the loop, and suddenly [[spoiler:Gendo Ikari]] finds himself stuck in a multiverse that hates his guts.
* In many ''Franchise/{{Naruto}}'' fics, like [[https://m.fanfiction.net/s/9337966/1/Unkiton this one]]. Despite being sealed, Kurama can alter DNA and create new bloodlines.
* ''FanFic/FacingTheFutureSeries'': Danny's feral SuperMode gives him enough power to break free of Vlad's spectral energy neutralizer box that he normally couldn't escape on his own.
* ''Fanfic/ThousandShinji'': According to the Magi, the data Ritsuko enters to determine how a massacre of black ops troops occurred is completely impossible. She has to write a patch for the software just to make the computers accept what they view as nonsensical data. (In reality, it just requires technology from 38,000 years in the future).
* In ''Fanfic/HybridTheory'', beyond the natural reality of Chi and the common impossibilities of Magic, you have the Third Circle, where people in moments of desperation can push themselves beyond all normal limits. Its presence can set people outside the rules and allow them to force new Concepts to ''be'' and ''always have been'' at the expense of collapsing timelines and accruing Paradox.
** Thanks to [[Manga/RanmaOneHalf Ukyou's]] constant exposure to the Third Circle due to her bond with [[SelfInsert Aaron]], when [[Manga/SailorMoon Sailor Pluto]] freezes time in order to kill her, the ninja isn't affected - not through an act of will, but simply because Ukyou ''wasn't paying attention.''
* In ''FanFic/MonstersInParadise'', [[spoiler: this is Tobias's rationale for stocking his team with Legendaries at the Sinnoh tournament, as he feels that it's the person who can achieve the impossible that deserves to be the Champion. Whether he was referring to himself or to Ash's efforts against Darkrai and Latios is left unsaid.]]
* ''The Boy Who Fell from the Sky & The Girl Who Found Him'': When Naruto tries to restore Bolin's Earthbending with his Six Paths Powers[[spoiler:Naruto some how turns Bolin from an Earthbender to an Airbender]].
* ''FanFic/RosarioVampireBrightestDarkness'': In Acts V and VI, Babylon's powers enable the souls of the dead to leave the afterlife, which the angels of Heaven insist shouldn't be possible.
-->'''Gabriel''': Whoever this monster is, he... defied the laws of life itself.
* In [[https://www.fanfiction.net/s/8094173/1/ Phone Call]], a ''Series/DoctorWho'' fanfic, the Doctor somehow manages to win the entire game of GrandTheftAuto without killing anyone.
* In the ''Anime/TengenToppaGurrenLagann''-inspired ''VideoGame/ChronoCross'' fanfic [[https://www.fanfiction.net/s/11085119/1/Heaven-Smiting-Masked-Magician Heaven-Smiting Masked Magician]], it has been stated repeatedly that it's impossible to destroy the incoming meteor in space for three reasons. First, whatever that tries to get past the atmosphere will get burnt up unless the object is ''extremely'' fast. Second, there's no oxygen in space, while there's no sign of spacesuit in-universe. Third, the meteor is over a mile in diameter. [[HotBlooded Guile]], whose flight speed is just slightly faster than a hunting bird and armed with only his magic power and BoomStick, doesn't care and brushes it off with a BadassBoast (complete with Kamina's pose) when the fortuneteller warns him about it. Through blasting the ground with KamehameHadoken, he gets past the atmosphere, and he later does the same trick [[RuleOfCool on the Moon]] to get a speed boost in space, so that he can complete his mission before the oxygen supply in his body depletes. [[spoiler: He succeeds, and his achievement [[MemeticBadass terrifies]] people.]]