History BerserkButton / FanWorks

* ''ThingsIAmNotAllowedToDoAtThePPC'': Deliberately riling up [[WesternAnimation/TheLionKing1994 Pumbaa and Scar]] by respectively calling him a pig and mentioning Mufasa in his presence is not allowed, with the latter action being said to create far too much attention.

[[AC:''Fanfic/{{Rugrats}}'']]

** Carue the Duck has a lot of pride in his captaincy in the Alabastan Military and as Vivi's lifelong bodyguard; mock his capabilities in either roll at your peril.

[[AC:''Literature/{{Twilight}}'']]

[[AC:''VideoGame/SuperMarioBros'']]

* In ''[[https://www.fanfiction.net/s/12320880/1/Mall-Rats Mall Rats]]'', [[BrainlessBeauty Leni]] is normally a kind, if ditzy girl. However, when she sees three jocks bullying Lincoln, they go down ''[[CurbstompBattle HARD]]''.

* ''Fanfic/ShadowsOverMeridian'': After realizing how much she's been kept LockedOutOfTheLoop by her well-meaning advisors, Elyon quickly develops a hatred of information being kept from her.

* ''[[https://archiveofourown.org/works/29520012/chapters/72970077#workskin When in Doubt, Go to the Library]]'': Wan Shi Tong hates people who recycle anything used for knowledge. In particular, though he understands ''why'' the Water Tribe rarely writes anything down and even more rarely doesn't simply write over it later, it drives him nuts because of all the knowledge that's being lost in doing so.

** Izuku hates whenever anyone implies that anything serious is a joke. His entire life is nothing but a long, cruel joke, so he snaps at anyone who doesn't take things seriously enough. The first time he activates One For All is when Iida chastises him for muttering during the explanation of the exam. This also makes him even more annoyed at Todoroki's attitude than in canon.

* ''Fanfic/EquestriaGirlsAFairlyOddFriendship''
** Rainbow Dash (and especially the other Rainbooms) don't like bullies. She comes very close to attacking Vicky when she sees him bullying Timmy.
** Rainbow Dash and Scootaloo are pissed off over how Chad and Tad are allowed to bribe their way to victory.
** ''None'' of the Canterlot characters are fond of people who hurt little kids.

In ''{{Fanfic/Everqueen}}'', Isha finds the strength to fight against the Daemonettes once she sees one using her daughter's appearance and calling her mother.

* The Abyssal Re-Clsss Regina in ''Fanfic/HarryAndTheShipgirls'' is an {{Expy}} of [[WesternAnimation/MyLittlePonyFriendshipIsMagic Fluttershy]], so she normally is not easy to anger. But during [[BigBadassBattleSequence Operation UNDERTOW]], an enemy Ri-Class learned that to make Regina go absolutely postal, you should threaten her loved ones Harry and Shinano.

* ''Fanfic/TotalDramaVoyage'': While normally kind and easy-going, Mike doesn't take too kindly to people treating his Multiple Personality Disorder lightly, and ''especially'' hates it when people view him as the same as one of his previous alternate personalities. When Duncan compares him to Mal, Mike [[NoHoldsBarredBeatdown brutally beats him down]].

* ''[[https://www.fanfiction.net/s/13704704/1/Total-Drama-Voyage Total Drama Voyage]]'': While normally kind and easy-going, Mike doesn't take too kindly to people treating his Multiple Personality Disorder lightly, and ''especially'' hates it when people view him as the same as one of his previous alternate personalities. When Duncan compares him to Mal, Mike [[NoHoldsBarredBeatdown brutally beats him down]].

** Striking Keitaro causes [[spoiler:Miyabi]] to turn into a ViolentlyProtectiveGirlfriend, going after the culprit with an ArmorPiercingSlap.

** You'd better not mess up with Shendu's "belongings". That includes Valerie Payne, Shendu's [[BalanceBetweenGoodAndEvil Other]] and [[VillainousCrush love interest]]. If you cause her to nearly die or [[CrazyJealousGuy kiss her]], he might kill you. Hak Foo learns this through ColdBloodedTorture and [[spoiler:Daolon Wong]] through a CruelAndUnusualDeath.
** As for [[BewareTheNiceOnes Valerie]], it's dangerous to disrespect books or try to hurt her extended family (the Chans) before her.

* ''Fanfic/OldWest'':
** [[DeterminedHomesteader Grace Glossy]] is a civil woman, but when Bad Bill's gang beats up her son Teddy, [[MamaBear she]] [[NoHoldsBarredBeatdown viciously owns them]].
** [[UnscrupulousHero Rattlesnake Jake]] dislikes liars, which is one of the reasons he can barely tolerate the habitually pretentious Sheriff Rango. When he witnesses the vicious beating Grace gives Bad Bill's gang, he becomes very angry with the woman who has acted superior towards him due to her law-abiding attitude. When she confesses that [[spoiler:she killed the robbers who smashed nearly all her eggs]] as an explanation to why she's so prejudiced towards outlaws such as Jake, he calls her a hypocrite[[note]]he's also hurt by the notion that he's just like those baby-killers[[/note]] and leaves in disgust.

* In ''Fanfic/BlameItOnTheBrain'', the question of why a dead man had fallen out of Fry’s apartment drives Leela to immediately return to Earth despite taking an important test, but the discovery that the man in the morgue who has been identified as Fry is actually [[spoiler:Walt]] prompts her to [[spoiler:mount a one-woman assault on Momcorp to find the answers]].

* ''Fanfic/HuntingTheUnicorn:'' If you mess with Kurt, Blaine will not hesitate to pick a fight with you. If you hurt ''Blaine,'' the Warblers will want to rip your kneecaps out. And if you [[spoiler: sleep with sixteen-year-old Blaine, break up with him, and then string him along for weeks--''without correcting his notion that SexEqualsLove''--]]then his brother will threaten to burn you alive.
** Kurt doesn't take [[spoiler: Blaine's kidnapping]] very well.

--> '''Pet''': Now D.J., I warned you the last time what would happen if you ever made comments about my taskings or my sexuality. You seem to have forgotten.

* In ''Fanfic/TheRonlessFactor'', any topic relating to Ron becomes this for Kim after his death, inspiring extreme emotions ranging from anger to grief, and even after she learns that she’s still around as a ghost, that only adjusts her trigger to anyone talking negatively about him or anyone involved in his death, ranging from slapping [[spoiler:Shego]] for calling Ron ‘the buffoon’ to [[spoiler:beating up Drakken to such an extent that she broke his jaw]].

* Axel in ''Fanfic/TheReluctantFatherUniverse'' really doesn't like it when people other than himself call Roxas and Xion [[AffectionateNickname 'Rox' and 'Xi'.]]
** In the same series, messing with Xion too much will bring on the wrath of Roxas, which you [[UnstoppableRage do]] [[LimitBreak not]] [[TrashTheSet want.]]

* Go ahead. [[UnstoppableRage Try]] [[RoaringRampageOfRevenge harming]] [[MoralityPet Ellis]] in front of Nick. [[SchmuckBait We bet he won't mind.]] The times whenever people do, Nick tends to become frighteningly enraged. When a robber smacks Ellis and threatens to kill the group, Nick was seriously considering killing her. And when [[spoiler: Nick thought that Brenda ordered Jerry to kill Ellis]], he went completely NUTS and tried to [[spoiler: kill her with his bare hands.]]

* In ''[[https://www.fanfiction.net/s/6973663/1/Malon-s-Epic-Cow-Delivery Malon's Epic Cow Delivery]]'', if you value your life, do not '''ever''' insult Malon's [[MissingMom mother.]] She nearly ''kills'' [[RoyalBrat Ruto]] for calling her mother a whore.
--> '''Malon''': In any other circumstances, I would've pitied you, maybe even spared you. But you insulted the one person that I held most dearly. And for that, the punishment... is death. [[MegatonPunch Malon Punch!]]

** [[spoiler: In ''The End'', the Writer jokes about Sarafina's death, causing Haiba to lash out. Sadly, this leads to his death.]]

* [[Fanfic/LifeAfterDeathTrilogy Otto and Robin Octavius.]] Do not threaten their adopted daughter Mouse. Just... don't. If you're lucky, Otto will rip you to shreds with the help of four sentient, pissed off metal tentacles. If you're not lucky... Robin Goodfellow gets to 'play' with you.

[[AC:''Manga/{{Medaka Box}}'']]

* In ''Fanfic/FearNoEvil'', All for One deliberately hits All Might’s button by bringing up Nana’s death to taunt him. Aizawa narrowly stops them from ripping up an airplane mid-flight.

--->'''Izuku:''' Ooh... he pressed the "Deku Button." Always a mistake.

* Bakugou in ''Fanfic/TheUndeadSchoolgirlDeadPulse'' has people who don't give their best effort. When Bakugou realizes Todoroki is only using half his Quirk, he's enraged that the other boy would "try to be the best while half-assing it" and goes against his previous intention to not use his bracer's full power, for fear of damaging the building.

* ''Fanfic/DuranAndKiyohimesOmakeTheater: A few characters have them.

* ''Fanfic/AKingdomDivided'': After [[spoiler:Diamond Tiara dies]], saying anything bad about her to Silver Spoon is the best way to start a fight.

** [[spoiler: Cozy Glow hits another of Twilight's in chapter 10 of ''Diplomacy Through Schooling'' when it's revealed she's actually an adult in the form of a filly and thus putting the other students in potential danger.]]

* The author, [[http://www.fimfiction.net/user/kalash93 Kalash93]], has included a few throughout his stories.
** ''Fanfic/RacerAndTheGeek'' has the term Foal Killer, which is a FantasticSlur that is explicitly stated to be so that being called one can be [[http://www.fimfiction.net/story/81159/racer-and-the-geek considered a salient defense for homicide.]]
** Luna's and Celestia's in [[http://www.fimfiction.net/story/85411/reflections Reflections]] are DoYouThinkICantFeel and trying to dodge questions, respectively.
* In ''Fanfic/EpicUnicornHistoryTheBeardsOfHarmony'', we are shown that if you do anything that harms Star Swirl's beard, anything at all, you should forfeit your life before he does it for you.
* Shining Armor in the ''Fanfic/StallionsOfHarmonyVerse'' does not appreciate saying bad things about [[BigBrotherInstinct his little sister]].

* ''Fanfic/ThePiecesLieWhereTheyFell'':
** Rex does ''not'' like it when people think he's stupid due to just being a Diamond Dog.
** Page gets ''very'' mad when it's implied that [[spoiler: their hidden enemy is responsible for everything that's happened to her species, including the FantasticRacism aimed at Changelings.]]
* ''Fanfic/PonyPOVSeries'':
** Commander Bond gets pissed whenever Con Mane is brought up. Bond goes on a rant about how Mane is nothing but a mockery of real spies like him. Real spies don't go out in public in a TuxedoAndMartini, they stick to the shadows and risk their lives every day against real villains, not stereotypical cartoonish ones. [[spoiler:This goes away when history is changed by Makarov getting {{Ret Gone}}d, meaning Bond's spy parents are still alive. Bond is more jovial and enjoys Con Mane stories.]]
** Chance, the AnthropomorphicPersonification of Luck and Unpredictable Outcomes, cannot stand anyone cheating in a game of chance.
* In ''Fanfic/RitesOfAscension'', you ''do not'' want to express any [[FantasticRacism tribalist leanings]] in Princess Celestia's presence, no matter your station (especially since [[YouKnowImBlackRight alicorns are technically all three tribes]]). The only reason she hasn't made the fine for it two hundred million bits is because there is a legal maximum.
* {{Inverted}} for Raindrops in Fanfic/RainbowDoubleDashsLunaverse. Rain is pretty much the only thing that lets her ''stop'' being angry.

[[AC:''Franchise/FridayThe13th]]''
* In ''Fanfic/ScreamForMe'', calling Jason a retard and/or insulting his mother, telling Freddy he lost in Freddy vs. Jason, messing with Michael's shampoo, or taking Ghostface's drugs away from him, are all definite ways to get attacked/killed. Series can be found [[https://www.fanfiction.net/s/5148411/1/Scream-For-Me here]].

** Rainbow Dash (and especially the other Rainbooms) don't like bullies. She comes very close to attacking Vicky when she sees him bullying Timmy.

* If ''[[https://youtu.be/4K_LMgSQFn4 Pizza]] [[https://youtu.be/cz9GBed5E4E Fortress]]'' is anything to go by, then never, ''[[{{SeriousBusiness}} never,]]'' ask for [[{{StockYuck}} pineapple on your pizza]] in the presence of the mercenaries. [[spoiler: [[{{TheChewToy}} Scout]] ends up learning this the [[{{TheReasonYouSuckSpeech}} hard]] [[{{NoHoldsBarredBeatdown}} way.]]]]