Berserk Button / Fan Works

When a nice, normal character suddenly goes into a rage, you've hit their Berserk Button.

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Crossovers

• #8024: After being railroaded through a Kangaroo Court and falsely convicted of being Hawkmoth's 'accomplice', Marinette is used to people ignoring all her efforts to share her Cassandra Truths. Yet Nightwing and Red Robin manage to piss her off anyway when they visit her in Arkham Asylum, ostensibly so they can learn her side of the story, only to imply that they've already made up their minds due to Theory Tunnelvision as well. Marinette is frustrated enough that she immediately declares their interview is over, ordering them to leave. Both only make it worse when they refuse to listen, crossing over into hitting her Trauma Button and sending Harleen into a protective fury when she barges in to chase the bats out.
• Don't remind Firefly from Ace Combat: The Equestrian War about the death of her parents.
• In Avenger of Steel, the idea of being under someone's control (albeit only through a control collar rather than actual mind control) sends Jessica Jones flying into a rage where she beats a woman into unconsciousness when the woman had just been beating Jessica down only a few moments ago. Later on, the knowledge that Clark is about to face a woman who can control men prompts Jessica to break her ‘rule’ about staying out of super-heroics to join Clark, Sif, Natasha, and Coulson’s SHIELD team in confronting Lorelei.
• AWE Arcadia Bay (Rogue_Demon): Apparently, Trench demoting Emily is one for her.
  Emily: I mean, COME ON! I am a scientist, not a child! And I had thought that the fucking rangers had a handle on site security! Like, you can't expect one person to manage site containment, scientific readings AND fucking site security!
• Don't ever insult background character Ditzy Doo's child in Better Living Through Science and Ponies and expect to get away with it; she doesn't mind the mocking nickname 'Derpy Hooves' but dissing her foal will just lead to her helping Chell wreck you.
• In the Pokémon/Yu-Gi-Oh! crossover Between My Brother and Me: Mors Omnibus there are a lot of people who will go apeshit on you if you push their buttons.
  • Yvonne Maxa is a snarky puppeteer who doesn't mind if you happen to call her a "Puppet Bitch", but if you hurt her adorable puppets or if you're from Academia who boast about carding people, then she will use her knives and kill you on the spot.
  • Max Lang is an adorable little vampire boy who loves cartoons. Insulting them — as Edo Phoenix did — makes him drop the energy and calmly ask you, "You gotta problem with cartoons?" and proceed to kick your ass in a duel.
  • Dawn Fujiki does not like anything that is a reminder of the Lost Incident (justified as it massively ruined her older brother's life).
  • Seto Kaiba treasures a precious scarf that he wears all the time (it's from his mother and is used to hide that his neck was slightly snapped after he was hanged, It's a Long Story) and touching it is enough for him to snap. Better yet, harming his mother is enough for him to downright kill you.
  • Ash Ketchum is usually calm and will give cryptic comments on one's future through his Aura powers. Insulting his skill with aura is enough for him to cry "BLASPHEMY!"
  • If there's anything the Dark Signers hate (specifically Yusei, Kiryu, Misty, and Carly) it's abusing children. This is one of the sole reasons why they give Himika Akaba a Break the Haughty procedure due to her abuse of Reira.
  • Yuya Sakaki (after he was brainwashed by Zarc) hates Yusho — his true father — for abandoning him all those years ago.
• In most crossover stories involving him, Ranma hates when someone implies he became as strong as he is through anything but hard work. Big Human on Campus and Anything Goes Game Changer both make it a plot point that Ranma views it as an outright insult to his skill to suggest he's a monster or sekirei respectively.
• In Biology Say What?, don't ever insult Xander Harris where Safira can hear, not even if you're a fellow Slayer.
  Jolie: He barely graduated from high school, never went to college, and can't do any magic. He only went to Africa because no one else wanted him.
  Safira: Jolie, you will never talk about Xander that way again. If you do not get your ass out of this elevator and into the apartment I will forget that I am almost three feet taller than you and outweigh you by a hundred pounds and I will beat your ass into the ground.
• Whatever you do... NEVER mention and/or talk about the words, "frozen heart" in front of the Cheyenne89 Pictures version of Kirby! Considering the trauma even he himself has gone through in The Frozen Heart's Star, doing so will cause a straight up meltdown from him, sometimes even screaming out, "I AM NOT GETTING THE CURSE AGAIN!", usually at the end of his meltdowns. Here's an infamous example of Kirby's "frozen heart mention" meltdowns that comes from the roleplay, "Cheyenne and the Vorton Star":
  Cheyenne: well.. it’s about the incident that happened sometime after back when Frozen Heart Season had begun this year.
  Kirby: that!? Oh no! No no no no, please mom, don’t tell me that! I can’t stand it!
  Cheyenne: oh, sweetie, I’m sorry. I’m sorry. I didn‘t mean to bring that up.. But.. since Sparks is still back at the Sparkleverse, still a bit injured.. & stuck there for a while.. i miss him, truly & dearly.. & I don’t know what’s now gonna happen at here or there this day.
  Kirby: like?
  Cheyenne: a new adventure or mystery for us, ready for discovery of course, sweetie.. but still.. I wonder what Sparkle is now doing in there with his family taking care of him for his injuries..
  Kirby: What do you mean?! Frozen Heart Season?! Remember when I got that curse way back then?! Even if it is an adventure of discovery, and even if I wouldn't even know what would happen to Mr. Prime, I AM NOT GETTING THE CURSE AGAIN!!!
  Cheyenne: Son! Son! Please! Calm down!
  • Heck, even Kirby himself lampshaded it:
  Kirby: oh! sorry, mommy. I’m so sorry. That frozen heart which almost belonged to me still may have gotten my anger stuck on me hanging onto me, I still can’t even let go of it.
• Child of the Storm has a fair number of examples, thanks to its density, having a numerous cast of characters, and said characters having darker sides.
  • Harry is initially fairly relaxed, but after slowly becoming a Shell-Shocked Veteran, a few useful rules of thumb start to apply: don't be a bully, or your punishment will be creative; don't sexually harass (or worse) someone especially after Forever Red when, as the Red Son, he was repeatedly raped by Belova or at best, you'll be embarrassed, at worst... you don't want to know; and related to the previous (psychic ethics and sexual/intimate consent are treated as very similar)... don't ask him to abuse his Psychic Powers, or do so anywhere near him - after one experience on the wrong end of Mind Rape, he's willing to kill.
    • Oh, and don't harm people he cares about. Your life will not be worth living.
  • Carol is fairly touchy at first, especially about being touched or flirted with, but again, hurting friends and sexual harassment really piss her off (unsurprisingly, she and Harry get on very well). The latter is also dialled up after she finds out the full extent of what happened in Forever Red. Also sexism, though that has its roots in her phenomenal issues with her Stepford Smiler variant Standard '50s Father.
  • Thor. Don't threaten, endanger, or, worse, harm his son. Or indeed any children in the vicinity. Just don't. You won't survive, and there's a good chance the rest of the planet won't either.
  • Doctor Strange, by far the most dangerous character in the story, has three: don't condescend to him, don't suggesting that he might break his word (he has a self-imposed case of Cannot Tell a Lie), and don't harm children, especially not those he considers to be particularly under his protection. They respectively result in a savage "Reason You Suck" Speech to a group of Physical Gods and the threat of an And I Must Scream fate for the one condescending to him ( Zeus), a more or less explicit statement that if the person questioning his word had not been a child themselves, he'd have killed them on the spot, and an otherwise nigh-omnipotent being discovering that it is possible vomit up chunks of your own rotting soul.
• Children of an Elder God: Asuka was not enthused about touching —let alone fighting— Amaliel. Then the aquatic cosmic horror bit her robot's hand off. Asuka bludgeoned it, tore its limbs off, and then ripped flesh chunks off its body until she was sure it was very, very dead.
• Code Prime:
  • Cornelia gets angry easily if anyone insults her skills as a soldier given her pride, and does not like being compared to her father, the Emperor of Britannia. But one way to really piss her off is threatening or insulting Euphemia, as well as Lelouch and Nunnally.
  • Knock Out does not appreciate having his paint job messed up. Lelouch uses it as an advantage in a fight, by having Chiba easily dominate him in melee combat once he's enraged enough to fight sloppily.
  • Lugnut will be enraged easily if anyone insults his glorious leader, Megatron.
  • Jeremiah loses his temper quickly if someone calls him "Orange", especially if it's an Autobot.
  • Anyone that so much as insults Euphemia or threatens her is guaranteed to get Suzaku royally pissed.
  • Kallen does not appreciate it if someone insults her heritage, or threatens her loved ones.
  • Rai will fly into a rage if someone threatens innocents or his loved ones. When Nonette and Bulkhead were in danger during the Black Rebellion, he went all out and killed Breakdown. V.V. is also a major sore subject for him, given what he put him through.
  • Lelouch despises discrimination and becomes angered if someone he loves is hurt in any way.
  • After being turned into a lab experiment by Shockwave, just the mere thought or mention of him is enough to bring Grimlock's Energon to a boil. As Lloyd also found out, offering to tinker with him is enough for the Dinobot leader to give a Death Glare.
• Coreline: For recurring character Roger Hackett, it is insulting MegaCorp Stingray Industries and especially the Corporate-Sponsored Superhero team it sponsors, "The Champions". Don't even think about it, in any way, shape, or form. Not even if the universe decided you're in the right. Because it won't matter if you're a super-duper-ultra-mega-hyper Physical God Super-Soldier Stock Shōnen Hero with an army of followers or just a regular Jerkass — if he likes you, or thinks you are indispensable, he'll feel torn and guilty about his desire to make you pay, and if he doesn't... then Heaven help you.
• A Courier For Kivotos: Courier Six reveals to Hoshino that one of the main reasons he's helping Abydos High School is that bullies strong-arming helpless people triggers him, as it was a common yet, unforgivable occurrence in the Wasteland. Once they discover that the Kaiser Corporation was the mastermind behind intentionally debt-trapping the school in an unsustainable feedback loop and attempting to drive the remaining students out via armed incursions, the Courier sets off on a Roaring Rampage of Revenge to personally demolish their operations in Abydos.
• Dante is shown to be extremely protective of his daughter Evie in Dante's Night at Freddy's 2: Animatronic Boogaloo, to the point of completely losing his iconic cool when she is threatened.
• Deku: The Golden Saiyan Hero of Hope, in a Shout-Out to Dragon Ball Z Abridged, gives Bakugou what's called the "Midoriya Button", much like how Abridged Vegeta has a "Goku Button".
• The Dragon and the Butterfly: The Madrigals, while not a perfect family (but they're working on that) do not take kindly to any parent abusing their child, or to anyone who threatens any member of the family (including the adopted ones). So, when Stoick eventually arrives in the Encanto, the Madrigals have nothing nice to say to him.
• The Dragon That Will Pierce the Heavens: It is not a good idea to threaten innocent people or the Straw Hats in front of Hikari, especially Luffy, Zoro, or Chopper. This usually causes her to have a Roaring Rampage of Revenge against the person responsible, transforming into a Draconic Humanoid One-Man Army capable of taking down entire crews of pirates.
• Dungeon Keeper Ami:
  • Marda:
    • Having her trolls comment on her attractiveness. She will give them a proper beating if she catches that kind of talk. This is because he was originally male, and was implied to have been raped after being captured and transformed into a female troll.
    • Arch-Enemy: Mukrezar.
  • Boris:
    • Keepers in general, due to what he experienced thanks to Mukrezar destroying his hometown. When he finds out Ami is a Keeper, he's perpetually either on the edge of exploding or actually trying to kill her.
• Duran And Kiyohime's Omake Theater: A few characters have them.
  • Duran, after all that time dealing with District One, does not like or trust long black sedans. Also, he's not too keen on unverified intruders, like the mailman.
  • Nao and Julia are free to have all the glazed and jelly-filled they want, but try to take Aoi's chocolate donut, and she will go Attack Maid on you.
• Equestria Girls: A Fairly Odd Friendship
  • Rainbow Dash (and especially the other Rainbooms) don't like bullies. She comes very close to attacking Vicky when she sees her 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.
  • After they see that the Dazzlings have manipulated and hurt Timmy, the Rainbooms are pissed off beyond belief.
• Fates Collide:
  • Atalanta does not like wasting food. She gets very angry when Ruby Rose trips and spills a tray of food all over Mordred.
  • Yang Xiao Long throws Mordred's cigarettes in the trash, leading to her chasing Yang around the school.
  • Cu Chulainn gets upset when he finds out Archer has a copy of Gae Bolg inside Unlimited Blade Works because it is left lying in a pile of other weapons instead of neatly stacked. Archer counters since his arsenal is unlimited, it's impossible to organize.
  • Nero Claudius gets pissed when she finds out Ruby creates rose petals, as that is one of her own abilities that she thought was unique. She gets even more pissed when she finds out Ruby's last name is Rose.
  • Mercury Black gets pissed when Kirei Kotomine asks him about his father, whom he hated.
  • Penthesilea hates Achilles, and she also hates girls he spends time with like Atalanta and Blake Belladonna.
  • Like in canon, Yang's is messing with her hair.
  • Cinder Fall does not like people who were born with powers, as she believes they didn't earn them. She also gets angry when people ask how old she is or imply that she is old.
  • Frankenstein does not like anyone talking about her original father who abandoned her.
• Kugimiya in Happy Families Are All Alike (Naruto/Negima crossover) gets pissed when her friends suggest that she's masculine.
• The Abyssal Re-Class Regina in Harry and the Shipgirls is an Expy of Fluttershy, so she normally is not easy to anger. But during Operation UNDERTOW, an enemy Ri-Class learned that to make Regina go absolutely postal, you should threaten her loved ones Harry and Shinano.
• Here be Dragons:
  • Don't let yourself get caught trying to tamper with Atreus's mind. The very least you can expect in return is a harsh chewing-out, and that's if you're lucky. Far more likely the Force will be used to retaliate.
  • Smuggling is one thing, as long as you don't get caught, and be repentant if you do get caught. Disobeying a direct order to his face, though? Big no-no.
  • He also really, really hates traitors. How much? The second time he caught one, he nearly went Dark Side with anger and tried to Force Choke the culprit to death.
• A Hero's Wrath:
  • While it isn't hard to piss Asura off, he won't actually try to hurt you unless you do something especially despicable. Usually this translates to familial abuse, having hunted down and nearly crippled Endeavor when he found out what he did to his wife and eldest son.
  • While short-tempered, do not mock any of the Midoriya Family around Izuku. He threatened to cripple the last guy who claimed his sister was guilty of something.
• Gentaro in Horseshoes and Hand Grenades gets pissed if anyone starts bringing up the term of 'friendship', Ryusei Sakuta/Kamen Rider Meteor, or the word "Stop!". The last one is important because it was the last thing he heard before Meteor gave him the one-inch punch, and also because it was said by his dearest friend Yuki who said that, but never went to his aid.
  • In the side stories Wheel of Fortune and Month of Sundays, Mei Shirakawa gets mad when someone says the words "Rental service", and Damballa does not like it when he is stated to be similar to a Zodiarts and gets pissed upon seeing Aries the most because Aries Zodiarts killed off his son and daughter-in-law and his grandson was also lost in the struggle.
• An Impractical Guide to Godhood:
  • Making cheeseburgers out of Apollo's sacred cows is not a way to make friends with him.
  • Calling the Hunters of Artemis an "evil lesbian cult" makes their patron goddess and her lieutenant erupt into fury.
• Infinity Train: Blossoming Trail: The main one for the Red Lotus Trio is that hurting one another will have the other two retaliate in quick succession, but they individually have their own personal buttons;
  • Chloe personally has a dislike for curry and Pokémon, due to the years of emotional baggage attached to those things, and being called a princess as it makes her look weak and pathetic.
  • Atticus is attached to his little crown and taking it is just asking for the King of Corginia to chase you down.
  • Lexi, due to spending the past few years of his life consciously buried alive thanks to Grace and Simon, he absolutely detests most passengers (or "free-riders", as he calls them) as a result. Especially the two who did it to him.
• Interventions:
  • Peter muses that Caleb killing so many young women just for the sake of it has bypassed Peter’s usual ‘live and let live’ attitude and deserves to die.
  • Maury Parkman’s actions against Molly prompt Matt and Willow to terrify him even before Matt causes him to have a fatal heart attack.
  • After Doyle the puppeteer captures Dawn, the only reason Connor doesn’t kill Doyle is that he recognises that Dawn needs him, and he leaves Doyle for Spike to finish off anyway; Spike later asks Buffy if she seriously didn’t expect Spike to kill someone who had threatened to hurt Dawn like that.
  • Willow basically pushes all of Sylar's as she prepares to condemn him to a Fate Worse than Death.
• It's Always The Quiet Ones: The two girls stealing Luna's mother's pendant and then Professor Snape insulting her mother is what finally drives her to prove that Wrackspurts are real...and then things get ugly.
• Justice:
  • The two biggest ones for Sanji are disrespecting food and disrespecting women, with hurting children as a close third. The Joker triggers all three (handing out poisoned apples to children and attempting to slap Harley Quinn) in Chapter 7, and thus receives a Fate Worse than Death.
  • When Jack cockily suggests that none of the Deckhands are more educated than himself (a high school dropout), he manages to thoroughly piss off Harley, Ivy, and Cheetah, all of whom are doctors of various types, and also Clayface, who studied hard to become a professional actor.
  • Poison Ivy hates seeing plants abused or destroyed without proper care and renewal. She hates Halloween and Christmas because of the mass destruction of pumpkins and pine trees. She also has personal gripes with Usopp using his Pop Green plants as weapons but tolerates it because of his cultivation skills.
• In The Lone Traveler, the Traveler hates people being railroaded—or being forced to make a decision when the information they have access to has been deliberately restricted. This becomes such a defining trait of his character that he is eventually made God of Free Will.
• Lost to Dust:
  • Minamoto no Raikou gets very angry when someone calls having a child a mistake. To her, children are miracles and they are never a mistake.
  • Salem gets very angry if someone compares her to Ozpin. When Cinder does it, Salem threatens to kill her if she does it again.
• The Many Dates of Danny Fenton:
  • It doesn't matter if he is out on a date with you or not, Danny will not tolerate anyone hurting innocent people, especially kids. Cree and Vicky learn this the hard way.
  • A lesser one is that Danny won't accept being disrespected on his blind date and will be quick to tell the person who did it off.
• Metroid: Kamen Rider Generations: Mitsuzane has few. One, do not remind him or bring up about the misdeeds he committed in the past. Two, don't touch him; Samus is the only one who can do that. Gandrayda learned the hard way. Three, threatening his friends and his brother is the easiest way to piss him off. And fourth, you don't make fun of or insult Kouta on his ears. You'll regret it, Gou almost found out the hard way when he had to refer to Kouta as Jesus Yamato.
  • Gou has two: (1) Insulting Chase in front of Gou will ask him to kick your ass. (2) Never, EVER mention the name Tenjuro Banno when Gou is around, unless you're Krim.
• In Monsters In Paradise, Chen has no problem calling a Delcatty she didn't even own "Creampuff". However, calling her that same name is enough to enrage her into declaring an attack against the perpetrator. Not that it helped against Blastoise...
• A New Problem: T Bubbles is normally giggly, but when Horace compared her to her cousin Katrina, she screamed and slapped him.
• Eda in Owl Hearts is a Mama Bear with an absolute loathing for irresponsible adults and children being endangered, so when she finds out that Sora became a Keyblade Wielder at 14 years old, Eda goes out to find the people who had a part to play in thrusting the responsibility on to him (namely Ansem, King Mickey, Yen Sid, Eraqus, and Xehanort) and personally beat them up.
• Paper Mario X: Kirby when he hears Meta Knight kissed his girlfriend, Bow.
  • Don't make fun of Samus in front of her. Sonic and Link found that out the hard way.
• The Mountain and the Wolf: The Wolf tends to set these off in people, sometimes on purpose.
  • He manages to trigger Baelish into attacking him to no effect by questioning his fighting ability. As losing a fight is what set Baelish on the path to being the Manipulative Bastard he is today, it hits pretty hard.
  • The Wolf questions Euron's claim to kingship by stating he probably ambushed his brother to take the crown. Euron doesn't take it well, justifying himself with every swing.
  • Used deliberately on a Necrotect (long-dead but revived Ancient Egyptian architects and golem makers), defacing his work with gas-station-bathroom graffiti and insulting his craftsmanship, pissing the Necrotect off so badly that he leaves the current battle to attack the Wolf. This also prevents him from keeping the other constructs repaired.
• My Hero Academia: Unchained Predator: Injure Miruko, better hope the Slayer leaves your corpse identifiable. When Wolfram seriously injures Miruko in Chapter 19, Wolfram learns that the Slayer didn't like that at all, while Hawks and Miruko are left speechless and horrified when the Slayer breaks Wolfram's golem of junk, stomps on his organs and viciously headbutts him to oblivion. This is because Miruko reminds the Slayer of his wife Emily, and his rabbit Daisy.
• The Night Unfurls: Any remark or action that Chloe regards as an affront to her queen Olga ticks her off, even innocuous ones, like interrupting Olga, or requesting her to help set up camp.
• In the Megamind and Rise of the Guardians crossover fic Protectors, Roxanne's elder sister, Rikki, doesn't like it when adults threaten/use/discriminate young kids. To the extent that she punches her own mother when said mother makes an unwise move toward Roxanne.
• Rise of the Galeforces: Whatever you do, do NOT call Adam a "dinosaur". He's a pterosaur. Played for Laughs twice... and very much Played for Drama alongside another Berserk Button - harming Violet in front of him - in Chapter 25, leading to an Unstoppable Rage.
  • And while we're at it, it's probably not a good idea to call Dash a "morsel" either. Velociripper does exactly that in Chapter 6, and gets toasted.
  • If you fuck up the canon Violet is participating in, threaten her family, or yank her chain on a personal level, she will END you. Ludlow learned all of these the hard way, and did not live to tell the tale.
• RWBY: Epic of Remnant: Lancelot does not like his former king being brought up. Even saying "Arthur" in a casual conversation is enough to send him into a rage.
• Say It Thrice: Betelgeuse does not take kindly to anybody messing with his girl, or keeping him away from her. Lydia is his Protectorate and Morality Chain, and her well-being is his highest priority. On the flip side, Lydia doesn't really like it when anybody messes with ghosts in general, and him in particular; befriending Danny Phantom and his pals only makes her feel this more strongly.
• In Scream for Me, 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.
• In The Search for Victory, just hearing about what the Goa’uld did to Cassie when she was just a child nearly causes Bruce to transform into the Hulk.
• A Shadow of the Titans: Don't come between Gadjo and his pies. For a good example of why, it's shown that a previous employer of his once tried to summon an Eldritch Abomination; when Gadjo realized that The End of the World as We Know It would mean no more bakers and therefore no more pies, he proceeded to rip his boss' head off with his bare hands.
• Shadows over Meridian:
  • After realizing how much she's been kept Locked Out of the Loop by her well-meaning advisors, Elyon quickly develops a hatred of information being kept from her.
  • Following his Heel Realization, Vathek develops a loathing for anyone whose actions risk making Elyon's reign no different from Phobos'.
  • Though Tyrian is already Ax-Crazy, insulting Jade (whom he worships as a goddess) is a sure-fire way to make him seriously consider killing you.
  • You'd better not compare Sofia to Cedric or any other snake shapeshifter, even if she's able to take it with Tranquil Fury.
• The Shield's Dragon: Coming from the contemporary universe of Yakuza, Kazuma Kiryu abhors any mention or act of slavery, even if he has to begrudgingly accept its existence in Melromarc as the norm. He even shoots Naofumi a Death Glare when he first hears about Raphtalia's relationship with him but stands down only when she speaks on the Shield Hero's behalf. Also, you will be sorry if you mistreat or abuse slaves in his presence, as the demi-human slave trader convoy passing by Lute Village one day can attest.
• Sonic Generations: Friendship Is Timeless : Do not make Amy angry. Spike found that out the hard way.
  Spike: WHY WOULD YOU LEAVE ME WITH SOMEONE LIKE HER?
  Sonic: WHY DO YOU THINK I SAID DON'T MAKE HER ANGRY? WHAT, YOU THINK I WAS BEING CUTE?
• In Shadow Crystal Mage's Lyrical Nanoha/Green Lantern Mega Crossover fic Takamachi Nanoha of 2814, the fact that Pluto is no longer a planet really sets off Sailor Pluto, causing her to go into a Berserker Rage. It's very effective when the Wolkenritter show up...
• Thousand Shinji:
  • Asuka has several buttons. Calling her useless or a doll is downright suicidal. But if you hurt Shinji or try to seduce him, pray for a quick death.
  • Shinji is usually controlled. However, if you make a fool of him, he gets furious. If you hurt his family he gets homicidal.
• The Three Kings: Hunt: Ryou might be an overall nice guy but do not threaten his sister because he will hurt you if you do.
• Time Lords and Terror: Over the course of the story the Doctor manages to hit a couple of Twilight Sparkle's buttons, like accidentally teleporting one of her books to the sun.
  • For the S'Muz, all of reality is a Berserk Button to it, one that's stuck permanently in the on position.
  • The sequel, Mines of Dragon Mountain, adds another very big one for Twilight — do not try to harm Spike, or she will end you.
  • Zeitgeist Stardust will do anything to protect his employees. The Grundels' attacks on his mines were at first only viewed as an annoyance, but then they started killing his men, at which point he declared war and was initially even willing to commit genocide. Fortunately, events panned out well for everyone in the end.
• In A Triangle in the Stars, Bill Cipher alone has had so many that if it was an Oscar, he'd win it ten times over. And he's already pretty angry. Here's the most prominent ones:
  • Do NOT, and I repeat, do NOT take his hat and/or take selfies with it if you want to see the light of another day.
  • People backing out of deals, as carried over from his home series, still gets him angry. Especially when they're trapping deals.
  • Betrayal, or moreso perhaps wasting time, is also a big one, and Keyhole learned it the hard way.
  • Touching him is a minor one. He won't outright blow up, for reasons, but he'll be miffed. Except for the first time, which was a hug. This goes away by Chapter Twenty-Nine.
• Turnabout Storm:
  • Do NOT ask Rarity about why she didn't show up at the trial, NOR mention the post office or pens in her proximity. Phoenix learnt it the hard way.
  • For a more subdued but serious one, do not talk bad about your siblings around Cruise Control.
  • Do not call Gilda slow, she's already ballistic enough as it is without the entire courtroom telling her that.
• The Ultimate Big Brother: As in canon, do NOT look under Katakuri's scarf to get a look at his mouth, or you're going to regret it.
  • Additionally, do not mock his Trademark Favorite Food of donuts, and especially if the donuts were a gift to him.
• Ultraman Hero Academia: Hiroshi detests people treating him like he's helpless without a quirk. During the chapter "Obstacles", this reaches a Rage Breaking Point when smothering from his older siblings — Hayate and Kana — causes him to get injured twice. Needless to say, this causes him to direct a The Reasons You Suck Speech towards them.
• Voyages of the Wild Sea Horse:
  • Anyone who's fought the Kamikaze Pirates learns the hard way that you do not want to try and hurt Ranma Saotome in front of Nabiki Tendo, Kodachi Kuno, Shampoo, or Ukyo Kuonji. They will take issue with it.
  • Ranma is infuriated by abusive moms, to the point that despite being normally averse to fighting girls seriously, he tells Masami Tsukuyomi that he's going to enjoy hurting her after learning that she's the one who encouraged her students to beat on her Incompletely Trained son for years.
  • Harumi Tsukuyomi flies into a furious rant about people assuming that because of his looks and traditional dress, he "must" be either a homosexual, a transsexual, or both.
  • Shiki the Golden Lion absolutely despises the sea known as the East Blue, as well as anyone who comes from it. The instant he hears that a guest of his actually hailed from an East Blue nation, he goes from happy-go-lucky party animal to trying to murder her with his bare hands. Although he was drunk, so a certain degree of Alcohol-Induced Idiocy was involved, the sheer murderous rage stemming from the revelation was entirely from his loathing. He also hates storms, to the point that when one of his weather-reporters fails to predict a storm will buffet his Floating Continent, he shoots him on the spot.
• In The Wizard in the Shadows, if you hurt someone Harry cares about, he will burn you until there is nothing left, hit you with lightning bolts that vaporised a Mûmak (and that was a secondary effect), or use the Cruciatus curse in fairness, he had just found Sirius who Saruman had been torturing for the last seven years on you repeatedly.
  • Ginny has the Violently Protective Girlfriend thing going on with Harry (not that he can't fight for himself). When he dies temporarily, she destroys most of Mordor's army (by channelling some sort of higher power), utterly destroying the physical forms of three of the Nazgul.
• The Equestrian Wind Mage:
  • Don't ever let Vaati catch you bullying someone. EVER.
  • Don't kidnap Rarity. Maulgrim will not be pleased.
  • Don't call Maulgrim a chicken. He will make you regret it.
• Wonderful (Mazinja): If you steal L33t's tinker technology and, to add insult to injury, make it work, he goes very, very mad.
• Callista Wilson in Zero Context: Taking Out the Trash hates being called a cow, and will mistake cow-related comments directed at others as pertaining to her, which causes her to flip out. The story's antagonist is quick to catch on and press this button deliberately, using the subsequent distraction to shoot her in the back.

Ace Combat

• Three Strikes
  • Having lost so many friends and comrades in arms in previous battles, harming friends or family members is a pretty big one for Naomi, as Clemens learned the hard way. She's even willing to give up her career and risk court-martial if it means she can get back at the ones who threaten someone close to her.
  "If you ever tried to harm Count, my family, or any of my wingmen ever again - if anybody tries it - then I'll show you a 'villain'. I don't care who you are or what rank you've got or what happens to me. You hurt them, you answer to me. They're more important to me than my career will ever be."
  • Naomi is getting sick of people using her Belkan heritage as a reason not to trust her. She is a born and raised Osean. When she hears that the Eruseans on Tyler Island have been killing civilians for their Belkan descent she, as well as her father and likely Tabloid, is furious.

Aladdin

• In Queen of Diamonds, injustice of any kind prompts this from Jasmine, ranging from her own ‘need’ to find a husband to learning about how the poor are treated in Agrabah, such as Aladdin being arrested when he was only seven years old.

Animorphs

• In Eleutherophobia, Tom is normally passive and slow to react to things, but call him "Visser Seventeen" and he'll have to resist the urge to murder you on the spot.
• In What Tomorrow Brings, Visser Three appears fully in control and ready for anything when he finds himself in the new reality facing the Animorphs... but the moment he realises that Elfangor is alive on a fighter nearby, he abandons his goal of dealing with the Animorphs to focus on killing Elfangor, even blowing up Visser One's ship to try and destroy Elfangor's fighter.

Avatar: The Last Airbender

• Bring Me All Your Elderly! has many:
  • Toph loses it at the "Pebble Dance", deciding to break off from the main fic and beat some sense into the Earthbenders.
  • Narrating is one for Katara (particularly when Katarola is doing it). She also hates the scene in the Earthbender prison because of 1) the fact that Aang gets her inspiring speech and 2) the sheer stupidity of the scene in general.
    • She also flips out when Katarola attempts to make out with Aang, understandably.
    • Most things Katarola does are a berserk button for Katara, actually.
  • Zuko has a brief mental breakdown when he discovers that he is actually a cartoon character.
  • Lord Shyamalan goes berserk when Awng, of all people, starts criticizing some of the movie's flaws.
  • Sockson loses it at one point when Sokka abruptly chops off his ponytail. Unfortunately for Sockson, Sokka is a much better fighter than he is.
  • Sockson's failed attempt to hit on Katara works as a berserk button for Katara, Aang and Sokka simultaneously.
• In How I Became Yours, Zuko has two that Mai pushes- insulting Katara and calling him a "chard monster".
• Kyoshi Rising: Kyoshi is not fond of imposters pretending to be the Avatar.
• 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.

Batman Beyond

• Batman Beyond Revisited:
  • Jake does not like being seen as inferior to Bruce.
  • Dick does not like anyone insulting Bruce.

Bleach

• Vow of the King: Insulting David Hasselhoff's music causes Bambietta to threaten to "shoot Candice's tits off".

Blood+

• In the Blood+ fanfic Nobility, Anjou's initial fight with Nathalie. Nathalie goes berserk and kills Forrest because he ripped a few strands of her hair out.

Bolt

• The Bolt Chronicles: In "The Blood Brother," Bolt's new canine buddy Duke appears to be reasonably personable early in their friendship. However, he soon discovers that his pal has at least two topics that make him irrationally angry — cats and pop music. It turns out that Duke is both bigoted and sociopathic, something that ends their friendship abruptly once Bolt realizes it.

Buffy the Vampire Slayer

• The One With The Angelic Face:
  • Angela uses Spike’s old insecurities about how he compared to Angelus to try and provoke him into killing her before he can heal Drusilla; Buffy later suggests that Angela found it a lot easier to abuse Spike in the past compared to the effort he made just to tie her down here (while unaware that Angela was a man at that point).
  • Any threat to Angela’s life tends to do this for Buffy, particularly after she’s separated from Angelus (even if the threat comes from Angela herself).

Calvin and Hobbes

• Calvin & Hobbes: The Series shows that it's best not to call Dr. Brainstorm "Frank", lest he (loudly) correct you.

CLANNAD

• In An End to All Things, messing with Kotomi appears to be one for Okazaki, as evidenced by his reaction when Kotomi's godfather shows up.

Code Geass

• In Code Geass: Redo of the Rebellion, Suzaku is C.C.'s button because of Lelouch's death. She declares that she doesn't hate Suzaku for killing Lelouch, she hates him for helping drive Lelouch to that point and not protesting Lelouch's plan to have himself assassinated.
• In The Black Emperor, Lelouch is quick to get angry if somebody accuses him of being motivated by mere ambition. He emphasizes that he's not just out to take the throne of Britannia.

Danganronpa

• Despair's Last Resort has a few:
  • Ayame can't stand being told that she's not feminine enough. People would tell her this constantly because she enjoyed playing football/soccer.
  • Kumiko hates being called an otaku. She may visit Akihabara, collect manga, and play video games, but she wants no association with the otaku name. She also gets mad after Ryouta slanders Shizuka's name, and punches him in the face for it.
  • The usually stoic Miyako gets irritated after everyone starts fighting with each other over petty things. She actually chews them out for acting like idiots.
  • Shuuya gets furious when Saemi starts badmouthing the late Miyako, going so far as threatening to kill her right there.
• System Restore:
  • Following the second murder, Togami goes off on the other students for trying to reassure themselves that they'd done all they could to prevent it.
    Togami: What could we have done? Are you saying you don't know the answer to that?
    Saionji: What, and you do? Wow, good job keeping that to yourself.
    Togami: I don't think that anyone didn't know that preventing (the murder) would have been a simple matter of not setting fire to her cottage.
  • Saionji flies into a screaming rage upon seeing Souda's shrine to Sonia.
• Through The Cracked Mirror: Hiyoko insults Izuru by implying that the Kokeshi Dynamo can pleasure his girlfriend more than he can. He responds to this by slamming her head down on the table, breaking her nose.

The DCU

• Can't Get You Out Of My Head has Joker, who takes a very, very dim view of implicating him in something that he didn't do, as he put it:
  "There isn't enough room in this town for me and somebody who would do a thing like that, and they're going to be the ones to go. I am going to find whoever did this, expose them, and clear my name. And then I'm going to teach them the error of their ways. Over several days. With a dull knife dipped in iodine, so it really hurts and so they don't get an infection and die before I want them to."
• DC Nation:
  • Terra found out the hard way: If you're going to try and kill Changeling's girlfriend, do not follow it up by "making fun" of the way Doom Patrol died.
  • Harm a single hair on Corrine Bertrand's head OR his sister's head, and Caleb Zukov will show up with his demon's blood-based magic and a Desert Eagle to make you terribly sorry about it.
• From The Doctors and the Nurses They Adore Me So, hurting the Joker's dog is bad for everyone.
• Stephanie Brown/Spoiler puts up with a lot of crap in Angel of the Bat, but mocking the events of War Games (in which she was raped, tortured, and forced to fake her death) is a surefire way to get your face broken. Just ask Scarab.
• Our Own League series:
  • Kara has an intense hatred for any form of captivity, due to being trapped in Brainiac's city collection for thirty years.
  • In Teen Titans: Together for Tomorrow, upbeat-verging-on-Stepford Smiler Conner gets so angry at Damian for resorting to using an obedience-inducing Trigger Phrase on him, he blasts eye lasers close enough to singe the tips of Damian's hair.
  • Arsenal, a Recovered Addict, is prone to flipping out at the mere mention of drugs. Especially so if it's said around his daughter Lian, the reason he got sober in the first place.
  • Lian is a pretty violent person in general, but either insinuating that archery is lame or that the "Arrowfam" are B-list heroes will send her into a specific rage.
• Jordan James in SuperLife: Season 1 hates any and all forms of bullying due to suffering from bullying so bad in the past that he needed to move to a new city. Not even his friends/teammates are exempt from his hatred, laying into the ones he caught laughing at Leslie's embarrassing videos and getting pissed at them after asking if they'd still laugh if he was in the video and realizing a couple of moments later that they're deciding! At the end of the chapter, Jordan can't find it in himself to immediately forgive the Superhero Girls (barring Diana, who took no part in their behavior) for the way they acted.

Death Note

• In All You Need Is Love, Light flips out at any mention of Matsuda's soap opera, or more specifically of Matsuda's "reimagining" of his character as poor wimpy Hikaru Imagay the gay prostitute.
• Those Who Stand for Nothing Fall for Anything: Don't damage Light's suits. Just don't.

Devil May Cry

• In the AU fic Like Father Like Son, while it takes several chapters for Dante to confirm that Nero is his son, once he does confirm it, messing with the kid is a very good way to bring down Dante's full Papa Wolf wrath on your head.

Discworld

• In the Discworld of A.A. Pessimal, it is not wise to display any racial prejudice in front of proud Howondalandian graduates of the Guild of Assassins. Miss Ruth N'Kweze is normally pleasant, easy-going, and possessed of a pleasantly barbed sense of humour. But for a while, she was a teacher at the Assassins' Guild School, and an White Howondalandian student who used the word "kaffir" where she could hear it soon realised his teacher was annoyed, and prepared to do more than throw the blackboard eraser at him. Horst Lensen still carries a slight scar on his throat where her sword was pressed against his vocal cords, just to make the point.^note while angry, Ruth had enough self-control to be aware it would be frowned upon if she actually killed him. Not even the Assassins' School allows this to its teachers as a method of enforcing class discipline. Similarly, any anti-Cenotian slurs expressed where Miss Rivka ben-Divorah can hear them are usually met with telling retribution.

Disgaea

• Tyrantly Ever After: Valvatorez eventually learns that Artina's story is playing out anew, with Celestian forces intending to drag her back and punish her for joining his army in much the same way she was previously punished by her country for treating wounded soldiers. This injustice enfuriates him, and he immediately makes clear that he will not allow her to go through that again.

Doctor Who

• The Bugger Anthology: Dalek Jast does not take kindly to his sensor globes being misidentified. When a pair of Cybermen refer to the globes as disco balls, he responds by exterminating them.
• In Time and Space by Eureka2000, Epsilon's sore spot is the Time War implying that she was anything like Rassilon and his followers.
  • And don't ever do anything stupid in front of Zanna Sterling. Just ask her brother.

Dragon Age

• In the Skyhold Academy Yearbook series, the teachers at the eponymous school will get angry very quickly if anything endangers the school itself, the other staff members, or worst of all the students. Varric has an extra one; don't even imply that you're a danger to either of "his girls" (the Hawke sisters), because he will end you. Literally.

Ever After High

• In Poisoning Apple, do not make fun of Apple's singing or say that she's a terrible singer.
  • Don't mess with Rotbart's pet owl or force cute stuff on him and for all that is holy, don't mess with his sister, Raven.

Fairy Tail

• In Magma Dragon King, Dragon Slayers view the Dragon Soul Ritual as sacred. As such, when Natsu and Gajeel learn that Laxus used a dragon lacrima to make himself an artificial Dragon Slayer, the Magma and Iron Dragon Slayers royally flip out and stop holding anything back, determined to destroy the lacrima and remove this perversion of their ritual.

Fate/stay night

• Fate/Harem Antics:
  • Caster is Medea, who was abandoned by her husband Jason for another woman. So she's not particularly fond of any mention of cheating or stealing someone's significant other. She's normally shy and reserved, but when Luvia suggests stealing Shirou from Rin, Caster immediately gets angry. She grudgingly accepts Luvia just flirting with Shirou to piss Rin off.
  • Temptress (Elizabeth Bathory) hates anything that even remotely implies that her voice is not beautiful or that people don't want to hear her sing. When Assassin politely asks her to please keep her voice down because they are in a sleeping neighborhood, Temptress goes berserk and says she will pay with her life for that "insult" before trying to kill her.

Final Fantasy VII

• Us and Them:
  • Don't spell Aeris' name wrong, she really doesn't like it.
  • Due to a mishap that causes her to skip ahead in time ten years, Ifalna finds herself becoming a grandmother while still in her thirties. She doesn't like being called "Grandma" at all. (She eventually comes around to it.)
  • Do not bring up the JENOVA Project around Sephiroth.

Fireman Sam

• Everyday Craziness in Pontypandy: Svetlana is from Sweden, and can't cook to save her life. As such, she gets very angry when people make Swedish Chef jokes about her; they're enough to make this Spoiled Sweet ballerina threaten violence.

Frozen

• In Lady In White, even after over a century since Anna's death, threatening anything associated with her sets Elsa off, as a potential mugger discovers to his cost.
• In What About Witch Queen?, threatening Anna - or even suggesting threatening her - is a sure way to attract Kristoff's ire, and boy, fear his wrath. Also, any news about Hans is bound to make Friedrich go full berserk, and the same - although to a lesser extent - applies to Anna as well.

Fullmetal Alchemist

• The Fullmetal Alchemist fanfic series The Elemental Chess Trilogy has all the same berserk buttons as the original canon. In addition, though, some others come up. Don't mistreat women in the vicinity of Alex Louis Armstrong (or, as shown in a flashback, Roy Mustang). Don't mess with the members of Team Mustang if you don't want to feel the wrath of the rest of the team. And pray for deliverance if you're caught red-handed having something to do with the disappearance and possible murder of Riza Mustang, because if her husband doesn't incinerate you (and that's a really big if), their friends will.
• In Son of the Desert, don't make racist comments about Ishval in front of Ed or Al.
• In i'm giving you a nightcall, don’t threaten Ed, even if you are Ed. Edward as Fullmetal tries to give Roy information and flirt with him to put him off his game. But then Fullmetal says something sounds like he’s threatening Edward which causes Roy to go ballistic.
• Aside from his usual feelings about his height, Edward in My Master Ed hates it when Van calls him Master. Van will often press these buttons on purpose.

Futurama

• In Blame It on the Brain, 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 Walt prompts her to mount a one-woman assault on Momcorp to find the answers.

Girls und Panzer

• Boys und Sensha-dō!:
  • For Akio, it's anyone treating members of their family poorly, especially casting them out of the family, which hits hard for him because he lost his father. He also dislikes Maho because he believes she is not there for Miho enough, but while Miho's defending her sister doesn't convince him, he doesn't press the issue.
  • For Shiho, it's having her personal honor questioned, as seen when she loses her temper when Saburo and Akio each give a "The Reason You Suck" Speech against her.

Glee

• Hunting the Unicorn:
  • 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 sleep with sixteen-year-old Blaine, break up with him, and then string him along for weeks—without correcting his notion that Sex Equals Love— then his brother will threaten to burn you alive.
  • Kurt doesn't take Blaine's kidnapping very well.

Godzilla

• Abraxas (Hrodvitnon):
  • Vivienne Graham has a couple. These include mocking or questioning her Parental Substitute feelings towards Dr. Serizawa and threatening her loved ones such as Madison Russell. It's also worth noting, directly visually reminding her of Ghidorah, the monster who psychically tormented her for years and ultimately killed her, can set off her PTSD and the results of that can be messy.
  • San has no tolerance for anyone inflicting serious harm on his sister Vivienne, whether that's physical harm like Alan Jonah's barbaric experiments on them or emotional hurt such as Ren Serizawa's outburst.
  • For Ichi/Eldest Brother (the middle head of Ghidorah), it's any reminder of the alien Abusive Precursors who invoked Being Tortured Makes You Evil on Ghidorah in its Backstory, and that includes human beings or any living things resembling them. The entire reason Ichi ate Vivienne alive and instructed San to bring her back for a Fate Worse than Death was because the Monarch task force she was leading unwittingly pressed his button by building a "cage" around the glacier holding Ghidorah, like the cage where Ghidorah had been born in torture.
  • For Madison Russell, anyone attempting to dare justify her late mother's villainous actions when alive is such a button. She suddenly explodes in fury when Mariko starts to mention Emma's actions in a positive light and doesn't mince her words when telling Mariko just what kind of a mass-murdering, friend-betraying hypocrite her mother was in actuality.
  • Mothra will not tolerate any unjust harm being inflicted on those creatures she considers her children, including San and Vivienne.

The Grim Adventures of Billy & Mandy

• Scott from The Sibling Rivalries Of Scott And Penelope goes absolutely berserk if you even DARE call him "Scotty".

Halo

• Company0051 has the The Captain of the eponymous Company. Basic inspection shows him as a calm, collected leader. Question how he runs the place, though, and he'll retaliate...

Harry Potter

• Beneath The Surface: When using the spell to locate Horcruxes, Ragnok becomes infuriated that there was a Horcrux smuggled into Gringotts, and even more so when Dumbledore admits he knew about the soul fragment in Harry's scar and did nothing about it.
• Finding A Place To Call Home: Horcruxes are considered a button of anger for Hera, but an even bigger one is intentionally using one to strip an unfortunate victim of their soul. Lucius is punished by going from rich Aristocrat to a pauper and beggar and Voldemort is trapped in the Sea of Crossroads forever.
• Harry Potter and the Methods of Rationality: People implying Harry's adoptive parents (his aunt Petunia and uncle Professor Verres) are abusive sets him off. He at one point gives Professor McGonagall a lecture about how innocently asking a child if their parents harm them can leave a muddy reputation even if the parents in question are Good Parents.
• Harry Potter and the Nightmares of Futures Past: Harry is adjusting well to the new timeline, he really is, and he's generally far less impulsive than his original canon self. But there's still a part of him that has fought a guerrilla war against Voldemort for thirteen years, and when a Boggart turns itself into a smirking Dark Lord, he reverts to old reflexes and casts a spell that blows up the whole classroom.
• Hermione Granger and the Boy Who Lived: It's quite reasonable to get angry about someone calling you a "slag", but not everyone would react the way that Petula Black does — exploding into action, knocking out a bodyguard, then putting a knife to Dolores Umbridge's throat and forcing her to soil herself as an alternative to killing her on the spot.
  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.

Hercule Poirot

• From The London Syndicate, messing with Poirot's friend Hastings is this for the detective. He even gets into a physical fight during the events of The Rival Gang to try to protect him.
  • As Absent Without Leave shows, these sentiments are reciprocated entirely.

How to Train Your Dragon

• In Black As Night, anyone mistreating Hiccup after he's blinded starts to set Astrid off; during the final lesson in Dragon Training, which pits her and Snotlout against the Zippleback, Astrid uses the cover of its smoke to hit Snotlout a few times for sticking Hiccup in the forest with his hands tied by his blindfold.
• Still sore from Hiccup's (supposed) death, Stoick from Prodigal Son is quick to lose his patience when he is brought up in conversation.
• While Hiccup in What Lies Beneath has given up defending himself from Berk's mockery and shaming, he will not tolerate it when it is directed towards Astrid or Zephyr. Snotlout learned this the hard way, getting punched in the face when he implied that the newborn Zephyr would be a "dud" like him.

The Hunger Games

• In Some Semblance of Meaning, the usually timid Vale has a huge Berserk Button when it comes to people trying to hurt Kit. This sort of Big Sister Instinct has caused her to ally with him even though he's probably the weakest competitor in the Games, run through the bloodbath to reach him at risk of her own life, and let's not forget the time she furiously killed another tribute who attacked him. It's also safe to say that another of Vale's Berserk Buttons is Obsidian Citrine.
  • Speaking of Obsidian, he sums up his own Berserk Button quite nicely for us: "You don't hurt innocent things. That’s just wrong. You don't kill sweet, innocent, harmless things."
• In the Valkyrie on Fire series, Finnick spends most of his time relatively controlled, essentially resigned to the role he has to play to protect his loved ones, but when Flash (the District One Tribute in the Quarter Quell) starts talking about how Annie (Finnick’s wife) didn’t deserve to win her Games, Enoboria is the only reason Finnick didn’t stab Flash straight away, even though he and Flash were officially still on the same team.

Invader Zim

• Becoming a True Invader:
  • Zim accidentally destroys Gaz's Game Slave, enraging her. She only stops inflicting pain on him when he agrees to do whatever she wants.
  • Gaz is even more pissed when she realizes that Tak has stolen her diary, to the point of agreeing to join Zim's invasion plans (which she previously didn't care about) for a chance to hunt her down.
• Invader Zim: A Bad Thing Never Ends:
  • When Skoodge accidentally breaks her Game Slave during their fight in the first chapter, Gaz enters an Unstoppable Rage against him.
  • Bob hates being reminded of his former status as the Tallest's table drone. And he hates the Announcer's constant mockery of his short height even more.
  • The only thing that gets under the Announcer's skin is the suggestion he wears stilts to artificially add to his height.
  • The one surefire way to piss off either Skoodge or GIR is to hurt Zim.
  • Tak is quite insistent that her vendetta against Zim is not about revenge. Saying that it actually is tends to send her into a rage.
• Ruby Pair:
  • Minimoose does not take being dismissed as a serious threat very well.
  • When Dib refers to Tenn as Zim's minion, she flips out and almost attacks him.
  • Tenn vaguely threatening to blow up a Bloaty's Pizza Hog restaurant is enough to make Gaz unleash her Killer Robot toys on her (and Zim too by association).
  • Also, Gaz hasn't been able to stand the taste of pork ever since the Pig Girl incident. When the Carne Bees accidentally shoot some into her mouth, she goes into an Unstoppable Rage against them.

Jackie Chan Adventures

• Queen of All Oni: Don't mess with Viper's hair. Just don't.
• The Ultimate Evil and its sequel, The Stronger Evil:
  • You'd better not mess up with Shendu's "belongings". That includes Valerie Payne, Shendu's Other and love interest. If you cause her to nearly die or kiss her, he might kill you. Hak Foo learns this through Cold-Blooded Torture and Daolon Wong through a Cruel and Unusual Death.
  • As for Valerie, it's dangerous to disrespect books.
  • Jade hates it when Valerie lies to or keeps secrets from her and the others. Learning from Hsi Wu that Valerie knew about Jade's status as Hsi Wu's Other is a major example.

Jojos Bizarre Adventure

• Jonathan Joestar, The First JoJo: As in canon, insulting Josuke's distinctive hairstyle is this.
• Oh The Weather Outside Is Frightful reveals that Josuke has another berserk button besides insulting his distinctive hairstyle, namely saying that his mother is lying about her snow-related trauma for attention, as Rohan found out the hard way. For clarification, both Tomoko's fears and Josuke's hairstyle came from the night they were nearly buried in a snowstorm while she was trying to get him to a hospital until a man with a pompadour (from whom Josuke got his hairstyle) helped them get back on the road.

Katawa Shoujo

• In Lilly Epilogue Family Matters, no one is especially fond of Mr. Satou insulting Hisao and Hanako, but Lilly takes it especially hard.

Kill la Kill

• From Secret Sunshine, Ryuuko has three:
  • One of them is Satsuki and much of anything related to her, as the latter abandoned Kiko (who was two days old) and her, two years before the main story.
  • The second one is someone bringing up her weight, as Uzu finds out when she threatens to beat him up.
  • The third one is her "sunshine" Kiko being unhappy and, as we can see, she will not take kindly to that.

Kim Possible

• In The Ronless Factor, 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 he'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 Shego for calling Ron 'the buffoon' to beating up Drakken to such an extent that she broke his jaw.

Kingdom Hearts

• Axel in The Reluctant Father Universe really doesn't like it when people other than himself call Roxas and Xion 'Rox' and 'Xi'.
  • In the same series, messing with Xion too much will bring on the wrath of Roxas, which you do not want.

Kung Fu Panda

• The Vow:
  • Lady Lianne is a pacifistic and gentle noble swan, but she becomes riled if you insult her mother or judge people of their congenital traits (like her mother's black plumage or Lord Shen's white coloring), even if she's not on good terms with said people. She also doesn't take kindly to beating up children. She may not attack you because of her pacifistic convictions, but she can harden your life with words alone.
  • Lord Shen develops a couple of these: you'd better not hurt or court Lianne or compare him with her father.
  • Shen's father Lord Goa is a fair ruler and hard to anger, but should his son or his honored guest be put in immediate danger or disrespected, he loses his calmness quickly.

The League of Extraordinary Gentlemen

• The Private Diary of Elizabeth Quatermain : It's a bad idea to mess with Elizabeth Quatermain's True Companions, because the rest of them will make sure you regret it. And it's a very bad idea to mess with Elizabeth herself because Skinner might not let you live to regret it.

Left 4 Dead

• In Left 4 Dead fanon, Louis likes pills a lot. Stealing his pills, or even having pills when he doesn't, will drive him into a frenzy.
• Go ahead. Try harming Ellis in front of Nick. 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 Nick thought that Brenda ordered Jerry to kill Ellis, he went completely NUTS and tried to kill her with his bare hands.
  • Actually, just try harming any of the Survivors. The others will make sure that you regret it for the rest of your life.

The Legend of Zelda

• In The Legend of Zelda: The Wind Waker, if you're a monster, do NOT mess with Link's hat. Kalle Demos found that out the hard way after spitting Link's sword out and pinning his hat against the wall.
  Link: Right! That does it! No one messes with my hat!
  Kalle Demos: Oh, actually, I think I just did, greenie! AH HA HA HA HA HAAAAA!
• In Malon's Epic Cow Delivery, if you value your life, do not ever insult Malon's mother. She nearly kills 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. Malon Punch!

The Lion King

• A couple of examples in The Lion King Adventures:
  • Don't insult Nala in front of Simba. You will regret it.
  • In The Return of Hago, Simba attacks Hago after he dishes out an insulting speech to him.
  • In The End, the Writer jokes about Sarafina's death, causing Haiba to lash out. Sadly, this leads to his death.
• In When Did I Become a Parent?, Timon does not react well to someone trying to harm Simba and in fact attacks the lion who does so.

The Loud House

• Flowing Star: Girl Jordan felt personally offended when Stella implied she was only interested in dodgeball when she was planting trees, but she calmed down and apologized for her outburst.
• Gal Pals: The Squirrel Suit becomes this for Lincoln, to the point that seeing it throws him into a blind rage that he tears it apart in the middle of court.
• In Mall Rats, Leni is normally a kind, if ditzy girl. However, when she sees three jocks bullying Lincoln, they go down HARD.

Love Hina

• An Alternate Keitaro Urashima:
  • Keitaro ignores Motoko's Girl Posse harassing him until they start insulting his girlfriend.
  • Striking Keitaro causes Miyabi to turn into a Violently Protective Girlfriend, going after the culprit with a slap.

Marvel Cinematic Universe

• Spider-Man: Finding Home;
  • After his first fight with Kraven, Peter apologies to Yelena for ruining her brand new apartment by giving her the spear Kraven threw at him. She becomes violently defensive of it, having to be talked into letting Clint even take a look at it and fully prepared to fight off a full squad of Dora Milaje when they demand she hand it over. Peter and Kate quickly surmise that Yelena hasn't really received any gifts before, and so values them, especially when they come from people she loves like Kate and Peter, beyond all reason. They have to explain to her that they'd never, ever want her to endanger herself for a thing they gave her. As Kate puts it, the whole point of giving someone a gift is to show how much you appreciate them, the person themselves is more important.
  • Felicia is particularly brutal when confronting a potential rapist, to the extent that Peter has to stop her outright killing the man rather than just leaving him to be arrested.
• Turning Tables: In Chapter 27, Peter loses it when he overhears someone call Pepper a gold-digger and Morgan a bastard.

Marvel Universe

• Life After Death Trilogy: 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.
• In Of Lovebugs And Promises, don't try to harm Bruce's siblings. You won't like him when you do...
• Jackson in We Don't Need Another Hero. He's a Straight Gay who has two moms and is something of a Perky Goth with a comment for everything. He'll let most insults slide but should his height come into play, he won't hesitate to put someone in traction.

Mass Effect

• Under no circumstances should you point a gun at Joachim Hoch in the Uplifted series. Hanala'Jarva will ruin your day and not even feel an ounce of remorse for it.
• Admiral Daro'Xen from Project Gethinator is Yandere for Shepard in a big way, and does not take kindly to anyone who suggests that she and he are not meant to be. When she is directly turned down by Shepard himself, who is less than pleased with her horrible experiments and is in love with Tali, goddamn, does she ever lose it.

Medaka Box

• World as Myth: Kumagawa apparently got "a bit hysterical" when Zenkichi was almost drowned in mud by Tangeshima. It Makes Sense in Context.
  • Koga getting shot sends Medaka into War God Mode.

Mega Man (Classic)

• In Mega Man: Defender of the Human Race, Wily's is being called out on his mental instability.
  • Bass's is hurting Roll or intending to hurt her.
• In Mega Man Reawakened, Roll's is making fun of her or Robert.

Merlin

• Unlike in the show, Merlin never uses his magic to kill people in The Student Prince... until he realises Val is about to kill Arthur. When this happens, Merlin bends the fabric of space itself to get between them and creates a swarm of angry bees, which goes after Val. Merlin later says that he does not regret killing him.

Miraculous Ladybug

• Dad Villain AU:
  • Gabriel can't stand anything that reminds him of Ladybug or the fact he's not an Invincible Villain as he proclaims himself to be that always gets what he wants.
  • Mistreating Marinette is the easiest way to get on Tom's bad side. When Kim tries to brush off the cruel prank he pulled on Marinette and won't take no for an answer, Tom intervenes with a Nightmare Face. And that's not counting his personal vendetta against Hawkmoth...
• Feralnette AU: Felix accidentally hits one of Marinette's when he tries teasing her about standing up to akumas more effectively than she does to bullies, leading to her calling him out.
  Marinette: You think I put up with that shit because I'm a coward? You have the luxury of fighting back with sass and lies without consequence. But not everyone is some pretty blonde from England with a rich mom and famous family. Sometimes people are baker's daughters who have to choose their battles. Sometimes you have to choose between personal happiness and risking an akuma. The best thing I can do in my position is survive this and endure it. Or else someone's tantrum will summon Hawkmoth again. I appreciate you backing me up, and the sass is funny, but if you're going to scold me afterwards, you can save it. I get enough criticism from Bustier.
• The Karma of Lies: Being called an 'Everyday Ladybug' becomes one for Marinette after she realizes how her classmates took her generosity for granted, shunting her aside in favor of Lila and expecting to be Easily Forgiven upon learning that she was Ladybug all along.
• Oh, You Don’t Have to Do That. (Communication):
  • Due to an undescribed event in her past, Marinette has a strong hatred towards liars, especially those who use their lies to manipulate them.
  • Lila has a "hate trigger" when anyone calls her out of her lies and becomes single-mindedly obsessed with ruining their lives as retribution.
• Papa Bear: When Gabriel Agreste makes Marinette cry, Tom Dupain single-handedly starts the chain of events that gets Adrien away from him forever and outs Agreste as Hawkmoth to all of Paris. Don't mess with his daughter.
• Scarlet Lady: Tikki needs to invoke this trope at times to get Chloe to actually step up and do her job as a superhero (and even then she's The Load for pretty much every fight).
• Spellbound (Lilafly): The Fair Folk really don't like being called "fairies". One of the ways Adrien notices how distant Chloe (a half-fae) is becoming is that she starts responding negatively to the word. Felix temporarily becomes sensitive to it as well after his experiences at the Samhain revel.
• What Goes Around Comes Around:
  • Marinette becomes increasingly irritated by Alya and Adrien insisting that Luka is nothing more than a 'rebound' for her and that she should dump him on their say-so in favor of Adrien.
  • Juleka also gets increasingly upset by this, given how they're insulting her brother by claiming he's 'nothing special'.

My Hero Academia

• In Fear No Evil, 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.
• Haigha:
  • Simply seeing Midoriya is enough to make Shigaraki completely lose his shit and abandon the League's original plans for the USJ Attack, as he immediately orders everyone present to focus on taking Izuku out.
  • When Tetsutetsu declares that Class 1-A was "lucky" to have a chance to fight villains, Izuku angrily goes off on him, ranting about how he was "lucky" to keep his arm after the assault. This manages to shut up Tetsutetsu and everybody else who'd been expressing jealousy over the incident.
• Heroes Never Die:
  • Izuku hates it 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 and accuses him of not taking the exam seriously. This also makes him even more annoyed at Todoroki's attitude than in canon.
  • Kaminari implies that Bakugo is gay for Izuku. That doesn't go well for him.
    Izuku: Ooh... he pressed the "Deku Button". Always a mistake.
• In Juxtapose, one of Principal Nedzu's buttons is hit when Izuku tells him that because his grade school thought his Quirk was so useless, the teacher passed Izuku off as Quirkless and never assigned him a Quirk counselor. Because of how fundamental Quirks are to a child's growth, this constitutes nothing more than child neglect, and Nedzu is all but planning to bring the school up on every charge possible for that.
• Passion on Display: Bakugo has no shortage of them, but Mineta presses one by asking insensitively about his sexual preferences.
  Mineta: Well, after the sports festival, I discovered your tastes for the more extreme. You like it rough, don't you?
  Bakugo: WHAT THE SHIT ARE YOU TALKING ABOUT, YOU DAMN DIAPER BRAT?!
• Bakugou in The Undead Schoolgirl: Dead Pulse hates 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.

My-HiME

• Duran And Kiyohime's Omake Theater: A few characters have them.
  • Duran, after all that time dealing with District One, does not like or trust long black sedans. Also, he's not too keen on unverified intruders, like the mailman.
  • Nao and Julia are free to have all the glazed and jelly-filled they want, but try to take Aoi's chocolate donut, and she will go Attack Maid on you.
• Inter Nos: For Shizuru, anything that threatens or demeans Natsuki.
  • Don't mistake Natsuki for a slave, and offer to buy her from Shizuru.
  • Don't call Natsuki a whore in Shizuru's presence. This one is shared by Natsuki's Lupine Division. A regular Otomean officer who made that mistake was dispatched by the Lupines.
  • Do not suggest, no matter how badly injured Natsuki is, that she is going to die. Shizuru nearly strangled the medical officer for that.
  • In another instance, Shizuru is informed by her men that an Otomian had challenged Natsuki to a duel. Natsuki tried to anchor her in place, without much success, until she explained that she'd already dealt with the matter.
  • Windows of the Soul: Shizuru's father Shinri doesn't like Social Climbers, students of kenjutsu who don't take the art seriously, or public officials who subvert their official duties to make money at the expense of the people they're supposed to be serving.

My Little Pony: Friendship Is Magic

• The Alarmaverse: Fluttershy gets angry when she thinks somepony is hurting her chickens—angry enough to terrify Ditzy.
• Bride of Discord: Discord himself has a couple:
  • Don't call him a freak or a monster.
  • Also, don't insult Fluttershy, not even his own reflection can get away with insulting her.
• A Diplomatic Visit:
  • Swift-Pad, and wolves in general, have one - once an apology's been made, that's it, no further ones needed on that subject. Bringing it up again is considered incredibly insulting since it implies that the other person forgave them too easily or that they didn't know what they were forgiving. Twilight accidentally triggers this for Swift-Pad, but once he explains about it, she promises to do better when it comes to learning such things so she won't accidentally offend others as she did him.
  • Harming endangered animals such as phoenixes is also a major berserk button for Swift-Pad, and when he finds out some teenage dragons were trying to smash defenseless phoenix eggs (and tried to bully Spike into doing so as well), he promises to pass it on to his counterparts in the Dragon Lands so they can tell the Dragon Lord, who will punish the ones responsible.
  • Wolves feel rather strongly about parents who shirk their responsibilities and effectively abandon their children to the care of others. And they especially hate it when the caretaker is incompetent; they consider leaving a child with someone like that to be abuse on a criminal level.
  • Even if you mean well, don't ever tell Twilight to act against one of the qualities that Princess Celestia praised in her when she became an alicorn. Luna learns this the hard way in chapter 21.
  • 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.
• Discord's New Business: A transformed Starlight (now a Chrysalis-style changeling queen) ends up pushing Discord's by taking on Fluttershy's form. She apologizes afterward though, having only taken the form out of an instinct to inspire love that she can feed on.
  Discord: "Don't. You. Dare." (with his eyes glowing red from anger, he snaps her back to her changeling form)
• In Epic Unicorn History The Beards Of Harmony, 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.
• Getting Back on Your Hooves: Losing is one for Checker Monarch and has been since she and Trixie were foals.
• Inner Demons: Once she's taken over by her Queen persona, it becomes a very bad idea to betray Twilight Sparkle. Or do anything that in her mind constitutes betrayal. Oh, and if you value your life, do not come between her and her brother.
• The author Kalash93 has included a few throughout his stories.
  • Racer and the Geek has the term Foal Killer, which is a Fantastic Slur that is explicitly stated to be so that being called one can be considered a salient defense for homicide.
  • Luna's and Celestia's in Reflections are Do You Think I Can't Feel and trying to dodge questions, respectively.
• A Kingdom Divided: After Diamond Tiara dies, saying anything bad about her to Silver Spoon is the best way to start a fight.
• In Legionnaire, just about everything pisses off the Khan religious authorities. Yes, they are Feeling Oppressed by Their Existence.
• Loved and Lost:
  • When Princess Cadance is injured in the tenth chapter and the distraught Twilight Sparkle asks the disgraced heroes — Celestia, Shining Armor, Spike, and the rest of the Mane Six — how they could have put her former foalsitter in danger, Celestia tries to pacify her by saying they didn't know it would happen. In response, Twilight — whom Prince Jewelius has manipulated to stop trusting her friends, brother, and mentor for their treatment of her at the wedding rehearsal — lashes out at them all, imprisons them in a magic dome, and coldly leaves them at Commander Hildread's mercy.
  • Jewelius really hates it when his cousin Cadance and/or aunt Celestia are openly praised/loved in his presence. This first shows when he's still pretending to be a nice prince; he glares angrily for a split second when Rarity praises the wedding of "the wonderful Princess Mi Amore Cadenza". After he has stolen the throne and made all the other heroes but Twilight public enemies, he gradually becomes more open about this. He eventually smacks Twilight in the cheek when she insists he pardon all the fugitives, and when Canterlot's citizens demand the same thing, he decrees that anypony who sympathizes with the fugitives will be accused of treason and severely punished.
• Apple Bloom from Moody Mark Crusaders will change your life into hell if you ever mention Applejack in her presence.
• The Pieces Lie Where They Fell:
  • 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 their hidden enemy is responsible for everything that's happened to her species, including the Fantastic Racism aimed at Changelings.
• Pony POV Series:
  • 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 Tuxedo and Martini, they stick to the shadows and risk their lives every day against real villains, not stereotypical cartoonish ones. This goes away when history is changed by Makarov getting Ret Goned, meaning Bond's spy parents are still alive. Bond is more jovial and enjoys Con Mane stories.
  • Chance, the Anthropomorphic Personification of Luck and Unpredictable Outcomes, cannot stand anyone cheating in a game of chance.
• Progress: Don't break Luna's glasses. Just don't. Also don't threaten anypony under her protection.
• Inverted for Raindrops in RainbowDoubleDash's Lunaverse. Rain is pretty much the only thing that lets her stop being angry.
• In Rites of Ascension, you do not want to express any tribalist leanings in Princess Celestia's presence, no matter your station (especially since 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.
• Shining Armor in the Stallions Of Harmony Verse does not appreciate saying bad things about his little sister.
• Starlight Over Detrot: Taxi will put you in a world of hurt if you bring up her (lack of) cutie marks, and Swift flips out at the mere mention of Essies (Magically-made constructs).
• The Vinyl Scratch Tapes: If you mess with one of Octavia's friends, she will beat the crap out of you. If you mess with Octavia, Vinyl will call you a jerk, go out of her way to humiliate you, and then have security (the Diamond Dogs) beat the crap out of you.
• The Wanderer of the North: Anything to do with Diamond Dogs is this to Nikóleva because of what they did to her father.

Naruto

• Chasing the Shadow: Never tell Sakura she can't do something, or for that matter say anything homophobic in front of Haku.
• Escape From The Hokage's Hat: Sakura's is people calling her a "useless fangirl" and insulting Naruto. Heaven help you if you push this button repeatedly. Ask Kiba.
• Kitsune no Ken: Fist of the Fox:
  • Don't waste pudding around Ino. She'll chase you all over Konoha High School and beat the crap out of you.
  • Don't destroy artwork that Sai has spent considerable time to make. Four bullies did it to a painting he'd spent an entire class period to make, in an attempt to intimidate him... and he ended up battering all four of them bloody and might even have killed one if Kakashi hadn't intervened.
• Legacy of the Rasengan: Don't ever steal Naruto's jutsu. When Kakashi does it on accident, Naruto's willing to let it slide after he promises to never teach it to anyone. When Naruto sees Sasuke use it while fighting Gaara, Naruto drags Kakashi outside and is perfectly willing to put him in the hospital.
• A major piece of the character development in People Lie is the three main characters slowly learning to overcome their individual buttons. Naruto overcoming the memories of his traumatic childhood, shown using his Shadow Clones to inflict pain on himself. Hinata, scorning Neji and the rest of her family but tempered by Naruto's influence, and Sasuke, given a tongue-lashing by Naruto and Hinata in order to make him refrain from snapping at the mention of Itachi.
• The Raikage: You can insult Naruto or his father all you want, but whatever you do, don't insult his mother or any of his wives because if you do, you're dead meat.
  • Don't insult or threaten Naruto in front of any Kumo nin, especially his wives.
• Son of the Sannin:
  • Kage in general get pissed off when the leaders of lesser villages are treated as their equals. This is actually what led to the fall of Uzushiogakure since Kuniotoko Uzumaki declaring himself to be the "Uzukage" during the Second Ninja War was considered so egregious that Kiri and Kumo (who were at war with each other at the time) joined forces to wipe them out.
  • Do not bring up the Uchiha Insurrection around Sasuke. Neji made the mistake of pushing that one a little bit too hard during their match in the Chunin Exam preliminaries and he nearly ended up having to be hospitalized.

Neon Genesis Evangelion

• A Crown of Stars:
  • Shinji's button is Asuka, and he is quite aware of it.
    Crush... destroy... kill... all of them. They hurt her. Make them PAY.
  • Asuka gets mad when someone tries to take Shinji away from her. After returning to their original timeline Rei presses that button constantly, sending Asuka in “apocalyptic” rages. In contrast, “people” as Winthrop, Jinnai, or Barceló piss her off, but she displays cold fury towards them.
• Advice and Trust:
  • When Leliel almost killed Asuka, calm, soft-spoken Shinji went berserker and tore it in pieces, roaring the whole time. Hurt her emotionally is also a very, very, very bad idea.
  • Hurt Shinji, upset him, or try to take him away from Asuka, and she will plot your demise and look for places to hide your corpse. And Rei will assist her.
  • Talking about Rei, threaten Shinji and Asuka in front of her and there will be nothing of you left after she is done with you.
    Rei: "You... will not... harm them... I... will... not... permit... it!"
  • Basically, the three main Pilots function as this for each other: harm any one of them in any way, and the other two will come down on you like the wrath of God.
    Rei: You will not touch them! Their bond is the most beautiful thing in this world! They love me and I them, and even I will not risk disrupting it! You will not ‘love’ them! You will do nothing that might disrupt it! DO YOU UNDERSTAND ME?
• The Child of Love:
  • Misato is a very overprotective Mama Bear. Usually she acts self-controlled, calm, and respectful when in the presence of a superior. When she heard Gendo was scheming something might kill one of her wards and would hurt the other, she walked into his office to put a bullet in his head.
  • Rei is unemotional and collected... but where her niece is concerned. Threaten Teri and she will snap and will crush you.
• HERZ:
  • Asuka has several buttons, most of them related to her husband: Do not flirt with Shinji, try to steal him away, or act perverted around him. Asuka will ensure it is hazardous to your health. Do not poke fun at her relationship with Shinji, suggest to her face they have S&M sex, or make Nazi jokes around her. Kurumi is constantly pressing the first button. Kensuke gleefully punches the second one every time he opens his mouth.
  • Rei. Threatens her niece’s life and she will liquefy you. Not a hyperbole.
• The One I Love Is...: Do not even think about hurting or harming Asuka or Rei in some way, shape, or form. Shinji… will not be nice to you. Unfortunately for them, the MP-Evas did not get the meme.
  Shinji: "Die... die... die... die! Die! Die! You monsters! You killed Asuka! I'll kill you! Kill you! I'LL KILL YOU ALL!"
  • Zeruel found out the hard way.
  • And later when he saw the MP-Evas munching the last remnants of Unit 02, he went utterly nuts and tore them apart savagely.
• Evangelion 303:
  • Asuka has several of them. It is NOT a good idea to pull a suicidal stunt during a friendly duel and getting her nearly killed, mock her, or flirting with Shinji.
  • Rei is usually calm but she does not like when someone endangers her Eva.
• Rise of the Minisukas: Shinji is usually a soft-spoken pushover...unless someone insults or attempts to harm a Minisuka in his presence. Then he gets mad in a scarily eerie cold way...or, if you are an enemy, in a homicidal way.
• Scar Tissue: Do not insult Asuka, do not pick on her, do not threaten her, and do not hit her in the presence of Shinji. If you do so much as badmouthing her or being rude to her, Shinji...will snap.
  "How dare you threaten my Asuka?!" Shinji slammed his foot against the beast's chest, forcing it to drop its grip on his throat and step back.
• The Second Try:
  • Taunt Asuka with her daughter's name or threaten to harm Shinji in front of her. Come on! I dare you! When Gendo tried this, he was a tad bit surprised when she lunged at him and nearly got her hands around his neck.
  • Likewise, Shinji doesn't take too kindly towards anyone who tries/threatens to harm Asuka. While he's pretty good at keeping his cool, some MP-Evas found out the hard way what happens if this button gets pressed too hard. Stupid bastards never saw it coming.

Omen IV: The Awakening

• Always Visible: Delia's death drives Inspector Galbraith crazy, even though he has only seen her once in his life.

Once Upon a Time

• Mr and Mrs Gold: Any parent that abandons their child is considered a bastard in Gold’s books. Even with Belle safe and sound, he does not take it well when she uses the chipped cup to feed a cat either.

One Piece

• Luffy's Renewed Adventure:
  • Luffy obviously has the canon one of his hat. He also, however, has an almost uncontrollable hatred towards Blackbeard and Akainu. He doesn’t think highly of Wapol and his disgraceful ways as a pirate either.
  • DO NOT so much as remind Alvida of what she used to be, let alone insult her about it.
  • Usopp retains his canon one as well: the one thing that can snap him out of a hopeless, Screw This, I'm Outta Here stupor in the face of extremely powerful enemies is mocking Luffy. Mr. 4 and Miss Merry Christmas discover this the hard way, and it also reaffirms Chopper, Valerie, and Greg.
• Second Wind: Crocodile doesn't take mockery well at all, but the one thing that pushes him over the edge faster than anything else is bringing up his defeat at the hands of Whitebeard.
• In Supernova (One Piece), Zoro rips Tashigi a new one when, like Kuina before her, she attributes her loss to women being weaker than men. Besides reminding him of his dead rival, it's an insult to his skill that he won simply because of his gender.
• This Bites!: In addition to canon Buttons, the fic has a few new ones thrown in.
  • Do not insult Tashigi's womanhood if you have any interest in not being castrated.
    • Destroying swords infuriates her. She is so enraged to hear how cavalierly Captain Shu uses his Rust-Rust Fruit to destroy swords being wielded against him that she not only has to be sedated but after she recovers, goes out of her way to beat him up.
  • Do not insult Emporio Ivankov in front of Mr. 2.
  • Do not disparage Donquixote Doflamingo in front of Bellamy, or worse, tell Bellamy that Doflamingo will never respect him.
  • Do not insult Sengoku's choice of goats as a pet. Not even if you're Akainu.
    • In a version that is not even remotely Played for Laughs, the subject of his deceased son in all but name Rocinante is taboo. Even for Kong. Double on this if there's even a hint of it being used as emotional blackmail.
  • For Garp, do not call his son Dragon a hero. As far as he's concerned, the Revolutionary is just a jobless bum using his "hobby" of changing the world as an excuse to get out of "real" work.
  • Do not mention "sins of the father" anywhere near Ace unless you want to be extra crispy.
  • Do not look down on Jabra because you think he's weak. He gets enough of it from Lucci, and it really gets under his skin.
  • Do not make light of a life-or-death struggle in front of Kalifa; she takes her assassination work very seriously. And thanks to Cross, really don't call her "bubbly".
  • Amazingly, even the Dirty Coward Smug Snake Spandam has one: Do not insult his father.
  • Cross himself has a few of his own:
    • Do not call him any variation of Jeremiah, and do not mess with Soundbite.
    • Spandam's entire existence. Cross absolutely and completely loathes him, to the point of telling the crew point blank that he would have no issues in killing him.
    • He doesn't like the notion that just being a pirate means he has no morals. There are pirates like that but he and his crew do not fall into that camp, thank you very much.
    • Out-of-series references are another, more comical button. It grates heavily on his sanity whenever Soundbite (or by extension B.R.O.B) gives any animal a voice from a different series, and even more so when their names happen to match. To the point where he wonders if they're intentionally trying to drive him insane at some points.
    • Do not put him through an Amnesia Episode. He hates them and after going through the Filler one for the anime he clobbers the party responsible.
    • On a more serious note, bigotry really pisses him off. In chapter 67, he finally snaps for what is only the second time in the story and goes on a massive "Reason You Suck" Speech toward Kuroobi and Chew on how their behavior led to the rise of Hody Jones and the representation of pointless cruelty. Enough so he begins foaming at the mouth and was about to get violent before Koala knocked him out... and Luffy was holding him back the whole time!
    • Hypocrisy and denying any responsibility for your own actions tend to be lower yield though no less provocative subjects for him. Usually when he gives a "The Reason You Suck" Speech to any Marine officer it's either kickstarted or focused around one or both of these subjects. When Aokiji shows up Cross emphatically wants to avoid aggravating him for risk of what might happen but when the Admiral tries twisting things in his Breaking Speech to paint Robin in the worst light possible (which "conveniently" excised his role and misdoings in those events) Cross has enough and returns fire, delivering a tirade that ends with him bringing up exactly what Aokiji's old friend Saul would really think about his actions.
    • He didn't precisely lose it and was coming off of a massive blow-up, but Cross did get testy when Koala assumed that he had some Freudian Excuse for hating bigotry so much rather than that he was just morally opposed to it, implying that something so fundamentally wrong had to be personal for him to hate it.
  • Soundbite takes offense when people treat him as less than sapient. He'll bite anyone who calls him a "pet". He's a full-fledged Straw Hat pirate and Cross' partner, thank you very much.
  • Luffy hates "Rape, Pillage, and Burn" pirates with a passion and sees them as fakers who give adventure seekers, who Luffy sees as the actual way pirates should be, a bad name. And lord help you if you dare to imply that kind of amoral behavior is what pirates are supposed to be like.
  • Do not touch Nami's tangerine trees unless you have her express permission. Soundbite apparently took a single leaf once in the past, and whatever happened put him off of them for good.
  • Chopper has two notable buttons; Don't disregard Doctor's Orders, and don't perform any medical "malpractice" in front of him.
  • 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 role at your peril.
  • Both Franky and Going Merry share a button; People who abuse or neglect to care for their ships. Franky is a professional shipwright who takes pride in the craft and Merry is a ship herself transformed by a Devil Fruit. She can hear the voices of other ships and can empathize with their pain if abused.
  • Anything involving either the destruction of Flevance or Donquixote Doflamingo will rile up Trafalgar Law. Even if he doesn't show it physically.
  • Chief Warden Magellan upholds the sanctity of the law over all else, especially within Impel Down. When he's told outright by the World Government to break the law and ship Ace to his execution ahead of the appointed date, Magellan erupts in pure fury.
  • The Straw Hats have a shared one due to their bonds of loyalty to each other — while they might needle and smack each other around on occasion, but any legitimate insults and threats from outsiders to any member of their crew will be met with serious anger as a minimum. As the World Government and Shiki found out when they abducted Robin and Nami, respectfully, if you mess with one Straw Hat, you mess with all of them.

Phineas and Ferb

• In any piece by KicsterAsh, insinuating that Phineas "cracks" when not allowed to sketch and/or invent. Given that it's Phineas Flynn, it's more adorable than anything else.

Portal

• Wheatley, in the Portal 2 fanfic Test Of Humanity, still hates being called a moron. However, it's also a very bad idea to say he's anything like the HAL 9000 or GLaDOS. And, whatever you do, don't you dare hurt Chell or imply that he can't feel love because he's not really human. He may be a Gentle Giant cyborg in the fic, but he won't hesitate to punch you in the eye (as GLaDOS found out) if you so much as harm one hair on the girl he loves.

Power Girl

• A Force of Four: Don't remind Badra that she was a one-time villain who disappeared after Wonder Woman kicked her butt once. She'll not take it well.

Power Rangers

• Sean O'Callahan is a walking one in Power Rangers GPX, particularly in the form of Daisuke Miyazawa, who keeps pushing it to his detriment. Eventually, Daisuke pushes it so much that after he mutinies, he gets a massive punch from Sean and a big earful. He calms down more in subsequent episodes, but he keeps it subtle, especially in an alternate universe version when his alchemist enemy compares his alchemy to Clarke's Third Law.

Pokémon

• A New Chance Series:
  • For any of Ash's Pokemon, it is threatening his well-being. Only now he has a Latios and Latias in his collection, and they are rather attached to him. The Fearow finds this out the hard way, when Pidgeot decks him after he tried to kill Ash.
  • Bianca has several. Don't ask her out in a perverted way, as Brock found out. Don't hurt Latios and Latias, and because of that, she chews Ash out every time he uses them in battle.
  • Don't call Latios an unimportant Legendary. Don't separate a child from his mother. Rico, who sold Larvitar's mother, pays the ultimate price.
• Black Albino: Don't come talk to Kuu about how darker Nidoran are stronger, faster, smarter, overall awesome, and bound to lead. No matter he's the darkest possible a Nidoran can be. That his mother was killed because of it doesn't help things.
• In Cori Falls's fanfic series, insulting or harming Jessie is this for James (Domino found this out the hard way). For Jessie, it's insulting or harming James or saying anything bad about her deceased mother (Misty found this out the hard way). And the existence of Ash Ketchum, of course.
• Legendarily Popular: When a flock of Taillow start stealing items from the party's lunch, Zapdos merely makes irritated remarks about how rude it is. But then, one of them steals a dango ball.
  Zapdos: You did not just do that.
  Pikachu: Get down!
  Zapdos: THUNDER!
• Pokémon × Nimja: Play the Game: "I'M NOT A GIRL, YOU PESKER!" For context: in the web series based on this fanfic OGiNiM is played by a girl, who (due to admitted vagueness by the author for the audition) made no attempt to make him sound like a dude. Though she rerecorded the lines in a more male voice, the author loved the original voice so much that she asked the woman playing him to keep it and put this gag into the fanfic in "Nevermore" as a result.
• Pokémon Reset Bloodlines has these:
  • For Ash, people abusing or hurting Pokémon in general has always been one, but when Paul blasts Primeape into the sky, possibly with fatal results, this sets him up into a full-blown Unstoppable Rage against the perpetrator. He seems to be developing another; namely, threatening Misty and/or Iris.
  • Misty really, really hates Pokémon thieves. She also can't stand seeing Water-types being hurt or abused by their trainers.
  • Giovanni doesn't like Juan. At all.
  • For Koga, it's jetpack ninjutsu, of all things.
  • The Draconids can't stand the sight of Fairy-types, and have little if any tolerance for Sootopolitans.
  • Azalea Town's collective one seems to be stepping on a Slowpoke's tail, like in the anime.
• Pokemon Shadows Of Time;
  • Serena shifts into a blind rage when Bonnie suggests she marry Clemont on their first meeting in this new timeline, and later goes on a rant when she learns that the Olympic was attacked while Ash was on it.
  • Even years since his last confrontation with Surge, Ash still has anger issues relating to Surge's belief that non-evolved Pokémon can't beat their evolved counterparts.
  • Misty flies into a rage when Snorlax comments on her former lack of cleavage.
  • Ash's entire team goes on a rampage when Ash is shot by one of the grunts; Ash himself only survives because Natu put him into psychic stasis and teleported him to safety. Later on, Charizard and Gabite/Garchomp are willing to tear through N with their bare hands when he tries to 'free' Charizard from Ash by destroying Charizard's Poke Ball by literally melting the ball in Ash's hand.
  • Ash is so determined not to be forced to go cross-dressing again to get into the Celadon Gym that he's willing to consider burning it down if Erika refuses to let him challenge her, and has a negative reaction to Mandi just wearing a kilt during the League conference.
  • Bulbasaur delivers a decisive beat-down to Erika's Tangela as payback for his loss in the last timeline.
  • Charmeleon evolves back to Charizard to protect Ash from Aerodactyl.
  • While Ash tries to control himself, he loses his temper with Paul when Paul insults Goodra.
• The Pokémon Squad:
  • Don't call Ash or T.J. fat.
  • Don't take away coffee from Sailor Pikachu.
  • Don't refer to Spinelli by her first name (Ashley)
  • Don't say any derogative comments toward purple people in front of Telly, Count Von Count, or Beebe
  • If Brock sees Red, he WILL go insane.
  • Dora gets extremely angry if someone criticizes her cooking. RM learned this the hard way.
  • RM goes into an Ax-Crazy state if someone messes with his hat, as "Mad Hatless" shows. He even beat up June for it, to the point that she became unconscious!
    • He also becomes angry if someone messes with his Swedish Fish or doesn't pay attention to his intelligence.
• Pokemon Take Two: A good tip for dealing with the lead of this Send Your Original Characters fanfic: In the name of all that is holy, if your name isn't Ry, do not, under any circumstances, call Raion Ryhorn. Just... don't. There are better ways to commit Suicide by Cop.
• Return of the Hero: Do NOT call Rosa "Rose" or "Rosie".
• Tales Of Faith: If you are a guy and state anything about Cress's flat chest, regardless of whether she's a Flaffy or Ampharos, prepare to receive either the end of her sledgehammer or a suplex if she's drunk.

Pretty Cure

• Yoko in Futari Wa Pretty Cure Blue Moon cannot stand destruction of property and is often set off ranting about it... like the time she walked up to the Monster of the Week in the middle of a battle and lectured it about the mess it made. Oh, and you might not want to remind Kainatrol of her sister unless you know what you're doing.
• Futari wa Pretty Cure Dragon: The man in black does not like being called a "super spade" simply because he acts like a stereotypical Mexican even though he isn't Mexican in any sense of the word. Go ahead, call him that three times. He'll go batshit on the poor sap who's unlucky enough that the third instance of that phrase in a single episode comes out of his mouth.
• In The Pretty Cure McLaughlin Club, Honoka does not like when people bring up scientific myths and act like they're real.
  Honoka: 10% of my...? Don't tell me you've been watching Lucy again!

Protectors of the Plot Continuum

• fanfic/Things I Am Not Allowed To Do At The PPC: Deliberately riling up 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.

Rango

• Old West: Rattlesnake Jake dislikes liars, which is one of the reasons he can barely tolerate the habitually pretentious Sheriff Rango. When he witnesses the No-Holds-Barred Beatdown 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 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 and leaves in disgust.

Ranma ½

• When Shampoo learns that Mousse has been throwing their fights in Ranma: Happenstance Gone Right , she's outright furious as it's an insult to any warrior for another to face them with anything but their full ability.

Real-Person Fic

• Harm an animal, or one of the others, around Paul in With Strings Attached and he may quite violently stop being an Actual Pacifist... though he has such a horror of hurting anyone that it's not too hard to talk him down.
  • All of the four have a Berserk Button if one of the others is threatened. Certainly John laid some heavy (tho' nonlethal) offscreen water whoop-ass on a handful of Raleka after George was badly injured falling through a roof. No matter that none of the Raleka had anything to do with this... but they were approaching in a slightly threatening manner.
    • Given that John had just been awakened from an enchanted sleep by George peeing on him through said roof, had no idea what was going on save that it was bad, and was pissed as shit, he seems justified in attacking anything that moved at that point.
  • The only time in the book that Paul followed through on an attack was when the Hunter's BFG threatened the others.
  • Ringo immediately threw As'taris back when he threatened John.

Rugrats

• Tommy Pickles: The Terrible Twos: Unlike his friends, Tommy absolutely can't stand Goober the Gopher.

RWBY

• I Can Almost Hear The Hounds: Weiss pushes Yang's when she suggests they leave their teammate alone to fend for herself. Yang, who still blames herself for leaving Ruby by herself to "die", takes it poorly to say the least.
• In Patience, nothing can faze Pyrrha...except for her unrequited crush on Jaune, which he is unaware of. Simply bringing it up causes her to get very angry very fast.
• Professor Arc: Jaune has gained so much popularity among Beacon's staff and students, that they'll react poorly to anyone who harms or hurts him in any way. Blake becomes visibly enraged when Jaune's sisters vocally belittle the guy, and barely holds herself back from attacking them, and from intervening in Jaune's fight with his father. Even Pyrrha can barely contain her contempt for them.
  • This becomes viciously exploited by Cinder and her crew. She has Jaune arrested by General Ironwood, which stirs up enough anger and distrust by the citizens of Vale toward Atlas, that it attracts Grimm. Emerald uses her powers to have Pyrrha hallucinate Penny making damning remarks about Jaune during their fight in order to manipulate Pyrrha into destroying her in a rage.
• A Rabbit Among Wolves
  • Cinder Fall, the selfish egomaniac she is, goes into cup-shattering fury when Jaune indirectly puts her on hold.
  • Qrow barely holds himself back from attacking a police officer who used a racist slur.
• In Tending to the Soul, don't read Jaune's journal or bring up his family or past, particularly his failure to get into Beacon. His Tranquil Fury when he catches Neo reading his journal is enough to momentarily scare her and earn her respect. Jaune's reaction to someone pressing one of his buttons is downplayed in that he'll then apologize and offer them a free drink.
• White Sheep (RWBY): After the Battle of Beacon, Adam's faction of the White Fang turns into a crazed cult worshiping him. Blake, Adam's ex-girlfriend who hated Adam even before this mess, noticeably twitches every time someone mentions him. At the Battle of Haven, Ren takes advantage of this by telling Blake "trust in Adam, and he will watch over you." Blake screams and starts killing everything in sight.
  

The Sentinel

• A common sentiment in The Sentinel's fandom is "The only thing more dangerous than a Sentinel whose Guide is threatened is a Guide whose Sentinel has been hurt."

Sherlock Holmes

• Don't mess with Sherlock Holmes or Dr. Watson. Seriously, don't. If you hurt one of them, the other one will come after you, and it won't be pretty. And, for the love of heaven, do not beg Watson for mercy if you played a part in Holmes's long-term imprisonment. You will probably end up dead.

The Smurfs

• Empath: The Luckiest Smurf: In the alternate timeline of Papa Smurf being married to Smurfette, Sassette dares mention that Empath is the one who truly loves Smurfette to Papa Smurf, and Papa Smurf slaps Sassette in the face for it, just having disowned him after he and the other Smurfs exiled the married couple and their child and then were trapped in time!
  • And in turn, Papa Smurf slapping Sassette becomes one for Smurfette, who promptly ends up leaving him and taking their daughter with her.

A Song of Ice and Fire

• Lady Stoneheart in The North Remembers is cold and emotionless to the point of being dead both figuratively and literally. Whether it be hanging Freys or witnessing a failed trial-by-combat or the reunion with her missing daughter, Stoneheart never so much as makes an expression of relief, satisfaction, rage, or sorrow. However, during her little reunion with Littlefinger, the man responsible for literally everything that happened to her family over the story, he makes the mistake of mentioning the Red Wedding and how it was only meant for her son Robb to be killed and for her to be ransomed back into his hands. She completely loses her shit and unleashes herself upon him, strangling the guy and nearly killing him before being stopped by her daughter Sansa.
  Lady Stoneheart: "Robb? Robb! ROBB!"

Sonic the Hedgehog

• Don't tease Tails in Journey Into Darkness about Cosmo's death if you know what's good for you, Shadow learned this the hard way.
  • In fact, Tails seeing Shadow in general pushes his Berserk Button.

Soul Eater

• In Breaking Point, Maka and Crona's biggest ones are anyone trying to harm the other. Violently Protective Significant Other is in full force in this story.
• In Oblivion, Medusa smacks her younger sister Shaula around and insults her fighting skills, plans, intelligence, and general competency, and Shaula remains relatively controlled through all of it. The second Medusa implies that Shaula was The Unfavorite to their parents, she immediately loses her shit.
  • Mother's Day, by the same author, reveals that potential Parental Favoritism was teenage Medusa's Berserk Button, too, from this exchange after she's just finished beating the shit out of Shaula for an Orphan's Plot Trinket that their mother gave to Shaula instead of her:
  Medusa: You see? I told you, you're too slow and too weak.
  Shaula: So is that why Mother preferred me over you when it really mattered?
  Medusa: (immediately loses her shit and rams her sword almost into Shaula's face) You want to say that again, you little - ?!

Star Trek

• In Insontis II, according to McCoy, one of the few things that can make Kirk lose control in front of crewmen is any threat to "their (currently fun-sized) Chief Science Officer and said science officer's precious dignity."
• In the fic Written in the Stars, Jane Kirk is a capable, level-headed Captain and generally a nice girl. But like her male counterpart, harming her crew is a bad idea, particularly Spock. This goes for her Prime counterpart, too. Added to that in this particular story, she gets pretty pissed in the first half whenever her counterpart makes not-so-subtle suggestions that she's gaining feelings for Spock.
• Worffan101's recurring Star Trek Online character D'trel ir'Aehallhah tr'Rihannsu has a pathological hatred of the Tal'Shiar that tends to make her go on Roaring Rampages of Revenge at the mere mention of them in a positive light. (Many years before, a Tal'Shiar secret police unit destroyed a Unificationist group of which she was a member, including her lover Adani, whom they raped to death.) First exploited, then subverted in Peace Forged in Fire:
  • Exploited by Colonel Merik tr'Kiell, who intentionally provokes D'trel into Berserker mode by speaking fondly of two other Tal'Shiar, one of them being Hakeev. He was luring her into her customary berserker charge so he could trap her ship and kill her. But he underestimated how much gun Praetor Velal had brought along.
  • Subverted after Merik's ship is disabled. He claims to have been one of the men who raped D'trel's lover Adani to death, to get her to destroy his ship to deny intelligence to the Republic and Empire. It backfires: D'trel decides death by exploding starship is too good for him and Merik is taken alive.

Star Wars

• In one Knights of the Old Republic fanfic, Saul Karath isolates Carth while his Dark Jedi honor guard interrogates Revan and Bastila. After trying the We Can Rule Together tactic (which fails miserably), he proceeds to test every Berserk Button Carth has. Carth holds it together pretty well, until Karath mentions what he plans on doing to Mission...
• While Jinn, from Star Wars: Light in Dark Time, is already a bit Ax-Crazy to begin with (he's basically a Sith convincing himself he's a Jedi), however, comparing him to Palpatine is just too far. Similarly, hurting his friend's, especially Leia, will make Luke explode.

Stargate SG-1

• In What You Already Know, as Daniel’s powers develop, threatening the rest of SG-1 is a quick way to get on his bad side, to the point where even Daniel is scared of what he’s capable of when a Kull warrior injured Sam and he retaliates by burning it to death inside its indestructible armour.

Steven Universe

• In Gift of A Diamond, Blue Diamond snaps at Yellow Diamond when she requests the Human Zoo and all of the gems and humans in it destroyed, Blue seeing it as an insult to their fallen sister.
• In Learning to Breathe Underwater, the Crystal Gems won't tolerate anybody badmouthing Rose Quartz, especially in front of Steven. Also, due to her time in the mirror, Lapis utterly hates being told what to do.

Supergirl

• In Hellsister Trilogy, NEVER make puns out of Darkseid's name. The Dread Lord has NO sense of humor and doesn't mind obliterating the perpetrator since he can bring the loud-mouthed idiot back to life as many times as he wants.
  "Fitting, indeed," said the assistant. "To have taken the Supergirl-clone from her imprisonment, Boom Tubed her to a point one year in her future, kept her comatose until her child's delivery, then sent her back to confront the Supergirl... a stroke of genius."
  The assistant grinned. "Why, you might even say, Dread Lord, that the Satan Girl was Supergirl's dark—"
  The master whirled and swiftly pierced the other's gut with the spear he was holding. The Spear of Destiny.
  Desaad clutched at the shaft transfixing his midsection in agony. His master shot forth beams from his eyes which reduced him to his primal atoms. Later, he would reassemble them, and trust that Desaad would learn by that not to make jokes using his name.

Super Mario Bros.

• Clash of the Elements: For Joe Dark, ANYONE defending Alex Whiter is this for him.
  • As Part 2 reveals, Anyone performing a futile Heroic Sacrifice is this for Driad
  • Never, NEVER UNDER ANY CIRCUMSTANCES, Mess with Ezekial Gaia's beard. Considering his powers, the results are not pretty
  • Chaos Alex goes completely berserk after Alex insults his mother's (Cackletta's) name one too many times

Team Fortress 2

• If Pizza Fortress is anything to go by, then never, never, ask for pineapple on your pizza in the presence of the mercenaries. Scout ends up learning this the hard way.

Teenage Mutant Ninja Turtles (2012)

• Master Shard in Shards of a Memory understandably has a knee-jerk hatred of men who have an "Entitled to Have You" idea of her, as the Cat King learned the hard way.

Thomas & Friends

• In Old Habits Die Hard, James does not take kindly to being called a "scarlet devil".
• In all of AaronCottrell97's stories featuring him, David Rider does not like people bullying Emily, and won't hesitate to retaliate, verbally or otherwise. In a more specific example, he goes ballistic in O Mother, Where Art Thou? when the Diesel deliberately crushes a picture of him and his mother.
• In Imitation Steamrollers, Thomas and Percy were already angry with George, but they outright erupt when they learn that his actions lead to Emily and Gina derailing.
• In Dynamite for the Quarry, Gina goes berserk when 'Arry and Bert insult Percy and harshly bumps them before giving them a savage profanity-filled rant in Italian.
• In The Brother's Grimm, Emily is absolutely furious when the Grumpy Passenger hits her brother Bernard with a cane.
• In Pumping Engine, Thomas goes berserk when one of Emily's passengers says that Emily should be turned into a pumping engine.
• Asking about The Wiggles on the blog Ask the Famous 8! is a surefire way to get you blocked from asking questions. No, seriously.

Total Drama

• In The Legend of Total Drama Island, Chris gets genuinely angry—something he rarely does—when Sadie tries to guilt him into letting her switch teams by accusing him of discriminating against her because she's fat.
  Chris: If you play the ‘oppressed minority’ card on me again, you’ll be out of here so fast it’ll make your head spin. Capisce?”
• In Monster Chronicles, Cedric hates when he's mistaken for his Cockney accent his mistaken for an Australian one. But that's nothing compared to what he'll do if you knock off his top hat.
• Total Drama All-Stars Rewrite:
  • Harming wildlife is a quick way to piss off Dawn.
  • Owen hates being called useless.
  • Gwen really hates it when Chris calls her Gwendolyn
  • Based on his reaction to Leonard calling it a spell, Mike gets pretty offended when his disorder is treated lightly.
• Total Drama Voyage:
  • Don't imply that The Ridonculous Race counts as an official Total Drama season in Chris' presence.
  • Arséne Lupin soon becomes just as equally infuriating to the host.
  • 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 brutally beats him down.
• Unbreakable Red Silken Thread: Anyone insulting Cody in front of Heather. She even was about to confront Jasmine when she insulted Cody in chapter 11, even though Jasmine is at least three feet taller than her, and in chapter 15, smacked Gwen in the face for insulting Cody.

Touhou Project

• Amongst Touhou Project fans, a lot of portrayals of Sakuya have her react incredibly violently if anyone implies that she pads her bra, or even writing or thinking the word "pads". She also doesn't like people who sleep on the job, which is bad news for Meiling. None of this, however, comes close to what she'll do to you if you mess with her ojou-sama, as Yukari found out in Koumajou Densetsu II.
  • Cheating Reimu out of donations is one of the surest ways to piss her off in fanworks, and has been the source of more than a few "Digging Your Own Grave" pics on Danbooru.
  • Patchouli likes to Throw the Book at Them on occasion in the fighting games, but as Musou Kakyou: A Summer Day's Dream demonstrates it's not a good idea to do the same to her. When Aya does this accidentally, it sets up a big throwdown between her and Reimu.
  • Calling Yukari any variation of "old hag" is a good way to be sucked into one of her gaps. She's 17, after all.
  • Very few things can piss Yuyuko off, but two things, according to fanworks, will do it: interrupting her meal may get you put through a wall, but stealing her food will make her go Hollow on you.
• In the Gensokyo 20XX series, do NOT call Yukari a whore, as she will make you wish you didn't.
  • A minor one that Yuuka has is being rude to her (like shouting at her and, if you're a child, calling her a bitch) and, as we recently find out, apparently dealing harm to Ran and Reimu is also this.
  • Yuyuko does not like being "fucked over".
  • Apparently, an age-regressed Reimu doesn't deal with wangsters too well and, if you deal her pain, she deals it back

Touken Ranbu

• Tales of the Undiscovered Swords: You can hit Hinata Aoe anywhere you like but do not touch his ornate obi sash. The only one seemingly managing to do so with no dire consequences is his brother Juzumaru, who only gets "vocal, noisy protest".
  Hinata: I don't care even if you stab my heart, but the second you touch my obi, you're as good as dead!

Toy Story

• Hurting or nearly killing Buzz Lightyear's adopted sis is not a good idea, even if you're the EVIL Emperor Zurg. Captain Lightyear takes his role as a big brother very seriously.

Transformers

• In Transformers Meta, Grimlock has a few berserk buttons:
  • Like any time Bumblebee is threatened or something bad happens to him otherwise.
  • Jazz also has a habit of pushing his buttons. Appropriately, these tactics occasionally include implicating Grimlock's friendship with Bumblebee.
  • Barricade also naturally has a few berserk buttons.
• In Dirty Little Secrets, Jack's hinted-at canon Berserk Button of threatening and/or insulting his friends (who he's come to see as younger siblings) flares up with a silent but fiercely angry flash of steel in his eyes when a "police officer" looking for Miko refers to her as "a whore". Arcee mentally expresses surprise that the adults confronting her partner aren't backing down given the heat of Jack's glare.
• In Prisoner of Destiny, the normally calm Sheba does not take kindly to Starscream being threatened.

Trollhunters

• Son of the Black: Do not mentions his father around Jim. Steve tried taunting him with it and wound up being carried away in an ambulance.

The Twilight Saga

• In Before The Dawn, after Bella spends months being raped and tortured by the vampire Joham, she escapes captivity when her newborn part-vampire son turns her during his birth. She runs into the Cullens while trying to find Charlie, but remains silent at first until Bella recognises her from Charlie's memories (still unable to read Bella herself) and Carlisle's words suggest that he thought it was all right that she may have killed people on her way to Forks. Bella is so horrified at the idea that she might have killed people that she immediately denounces the Cullens as “sick, horrible… things!” and is disgusted at the idea that they (seemingly) think it’s OK to kill people. Throughout the fic, apart from when Joham forced her to feed Bella's only human victim was when she acted a car on instinct while hungry, the Cullens helping her control her thirst as she refuses to be like the monster that changed her.
• In Bonne Foi, anything that threatens Bella to any degree becomes this for Edward; he even kills Aro, leader of the Volturi, because Aro’s abilities allowed him to essentially ‘intrude’ on Edward’s private moments with Bella as Aro saw Bella through Edward’s memories.
• Luminosity:
  • Bella does not react well to being interrupted. Notably, she also doesn't like the fact that this is a button for her, and uses her "mood-zapping routine" to keep it under control, to the point where it's barely noticeable even when she's a newborn vampire and could more or less kill anyone before thinking about it.
    Bella (thinking): But my annoyance was the ascription of motive to the secretary, glued down with entitlement and habit. If the motive were recognized to be nonexistent and the entitlement dissolved and the habit fought as a thing in my brain that I did not welcome, they ceased to trouble me.
  • Siobhan apparently has a strong opinion on the name of a certain set of islands. Nobody ever pushes the button on-screen, but Maggie stops Jake from using the name "British Isles", warning him that "it would be an inauspicious way to start your day if you provoked Siobhan into perforating your face".

Vocaloid

• In The Road Roller Rampage, Rin and Len go berserk and trying to run over Miku with their steamroller after she accidentally threw away their stock of oranges and bananas from the kitchen.

Warcraft

• In Tales of a Warrior, it's safe to say that as of chapter five, you should never, ever threaten Ayuri when Keleria is around. The 'berserk' is complete with Red Eyes, Take Warning and Laughing Mad.

Warhammer 40,000

• In Everqueen, Isha finds the strength to fight against the Daemonettes once she sees one using her daughter's appearance and calling her mother.
• A Wolf in the Garden: For Admu, the demi-goddess daughter of the uncorrupted version of Nurgle, Chaos as a whole, and the servants of Chaos!Nurgle in particular, becomes this once she learns of them. Hearing deranged cultists and Traitor Marines invoke the names of her beloved family as they commit acts that are, from her perspective, perversions of everything they stand for sends the burgeoning nature goddess into an animalistic fury, as Typhus and the Death Guard found out in the most painful way possible.

Wicked

• In The Land of What Might-Have-Been, while Elphaba still dislikes being used, but she controls it because she has to concede that the Mentor is right that there's nothing else they can do but help her against the Empress.
  • After spending time with Dorothy, the knowledge that Dorothy has handed herself over to the Hellion prompts Elphaba to immediately fly into a rage and resolve to find the Hellion to rescue Dorothy.

Worm

• Quicken: Lisa is a nice, kind girl most of the time, but don’t ever pry into her past, or she’ll use her power to pry into your head.

The World Ends with You

• Eri, Shiki's best friend, in Eri's Game will attack anyone who tries to hurt or insult Shiki. The beating with Beat, who is a Reaper, really does it.

Xenoblade Chronicles

• Where We Don't Belong:
  • Even before she meets Dughall face-to-face, Mio is up in arms the moment she hears the title of "Consul" given her experiences with Moebius. She immediately draws arms to resist arrest.
  • Unsurprisingly, Mio and Noah are hostile the second they find out Moebius, especially X and Y, have returned.

X-Men

• X-Men: The Early Years: For the love of God, DON'T diminish biochemistry and Twinkies to the face of Hank McCoy. Your demise will not be quick or painless.

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