Ray hates the cake item. He'll smash it on sight and once dug out of his own home when Gavin and Geoff sabotaged his home to shoot cake out of the walls. Also, as a fan of Sailor Moon's Tuxedo Mask, don't mess with the roses. Just don't.
Gavin is a troll, no ifs, ands or buts about it. But, stoop down to the point where you're cheating and he'll take offence at that. As well, as an Ill Boy, Gavin doesn't entirely enjoy a Groin Attack.
By extension, do NOT joke about animal cruelty.
Geoff is well known for being the creator of Achievement Hunter, as well as being the hard-drinking, foul-mouthed, walking storyboard of Rooster Teeth. He also has a daughter he loves dearly. So when he heard about the trailer for Dead Island containing the death of a little girl, he got about fifteen seconds in before he stopped the video, Googled the company, and proceeded to call them out on it.
Also, don't ruin something he put a lot of work into. He'll drop his controller and start pounding the shit out of you. In Real Life.
Everything is a button to Michael, though don't mess with his soon-to-be-wife, Lindsey.
Though part of the larger Rooster Teeth family, don't mention Las Vegas to Gus.
Flocculencio in AH.com: The Series whenever anyone mentions the name of his nemesis, Justin Pickard. Particularly noticeable considering Flocculencio is usually one of the more laid-back and sedate characters, but this makes him go Ax-Crazy.
Don't dig up Linkara's old fanfic, force him to listen to you read it, and then have the temerity to insult Doctor Who. When Bennett the Sage pulled this stunt, Linkara escaped the ropes holding him into a chair and started laying a smackdown.
One More Day and everything to do with also tends to send him into fits of rage.
Apparently, a comic adaptation of Star Trek II: The Wrath of Khan getting the movie's famous KHAAAAAAAAAAAAAAAN!!!!!!! scene incorrectnote The comic reduced that particular bit to just one panel and Kirk just simply shouting it. is enough to cause Linkara to just absolutely lose it.
Don't ever try to continuously fart near Mewtwo, or else, even at the cost of his own job, he will end up mind-wiping you, as Wario learned the hard way.
There are 2 things that Ganondorf does not tolerate: Vaati implying that Ganon's time as a villain is up, and villains not getting the hint that they were not accepted into the group. He blows them up to the shock and horror of his comrades.
Do not go on the Mass Effect RP site Cerberus Daily News and try to sell slaves, unless you like having armies of enraged mercenaries trying to kill you.
Chakats. Let's count the buttons, shall we? Harming children in general? BEATINGS. Kidnapping/harming one of their own kids? WORSE BEATINGS. God help you, killing one of their own kids? You'll be lucky if there's enough of you left to bury.
Both Cactuar and Tonberry from the Final Fantasy series by Crazy Boris have theirs.
Tonberry is eventually pushed to such a breaking point by Cactuar's stupidity that he sets the poor idiot on fire— twice— in "Gil Quest".
Cactuar goes ballistic upon being called "Fatty" by a cop in "Final Fantasy: Fugitive", and proceeds to morph into a giant, psychotically violent, needle-throwing version of himself. If a fleet of fighter jets arrive, he turns back to "normal" self, but saying "ARE YOU KIDDING ME?" and runs.
He also gets really pissed at Aerosmith for misspelling his name in "Resident Cactuar".
And whatever you do, DON'T mention Mary Kate and Ashley around him...
In another one of Crazy Boris' animations, Dimwit Quest, don't even think about trying to take Jim's bag of Powdered Sugar.
In the Ranger Up military humor series The Damn Few, if you say the word "pirate" around Sealy, he starts blazing away with a submachine gun. (Arguably a Damn You, Muscle Memory moment, as Sealy doesn't actually get angry.)
In Darwin's Soldiers, a group of thugs at a food court insinuated that Aimee, who has robotic arms, was a cripple. Seconds later, five of the thugs were dead.
In the 3rd Darwin's Soldiers, the Horseman of Death just killed Neku's girlfriend Hailey. This was a very, very bad idea. Neku is now in a hyper mode that BURNED HIS SKIN OFF, and is now out to slaughter the remnants of Dragonstorm. And anything that gets in his way.
In Database Rangers Power Reviews Just as in Power Rangers RPM, never, ever say the word "spandex" around Dr. K, especially regarding the suits' material. Just don't.
Do not hug Dracon. He doesn't need a hug. He needs you to stay far away.
Anna Demorah, in Felarya, tends to be somewhat cranky, but she'll leave you alone... unless you make the mistake of smoking in front of her. The fact has come up so often in fanfiction that it's rather killed the original humor.
Fighting Leaf does not approve of jokes made about a child's death, even if it's fake, especially ones made by the villain.
In Freddie Wong's short Don't F With My Cream, two robbers who knock over an ice cream parlor learn a verypainfullesson when they mess with Freddie's ice cream.
The two guys whose fighting ends up destroying the work of the Sandcastle Sensei also don't get out of things unscathed.
Gordon Freeman, at least as interpreted by Freeman's Mind, isn't the most stable of individuals by any means, but what really sets him off are bugs, which he will chase while flailing away with his crowbar before pulling out an MP5 or shotgun. He also gets upset when confronted with yet another locked door or dead end.
Jon will actually devolve into angry cursing mid-sentence if Arin belches. It almost makes him physically ill in Part 30 of Sonic 06.
One of the Grumps has never seen The Lord of the Rings. This revelation causes the other Grump to cough blood. (Sonic #57)
Jon: It's just like, "durr, I haven't seen Star Wars..!" Arin: What the fu— There's a lot of people who haven't seen Star Wars! Jon:FUCK THEM! Arin: Corey didn't see Star Wars, and I just showed it to him last night! Jon: Corey hasn't seen Star War— (indistinct) GET OVER HERE YOU PIECE OF SHIT! I'm gonna go beat him up!
In Pokemon Emerald episode 13, Jon and Arin talk about how one night, they went to Disneyland during grad night and, while riding Star Tours, most of the grad night students were yelling obnoxiously about how awesome they were. At the end of the ride, Jon, who had politely asked them to quiet down before, ends up yelling at them for being rude and disruptive throughout the whole ride.
In The Gamers Alliance, Belial is a reasonable and polite fellow even to his enemies. However, those who insult his loved one Razia in front of him will quickly regret ever opening their mouths.
From the Global Guardians PBEM Universe: Never, ever mention the fact that Dreamcatcher's father died in an insane asylum after a life of villainy if you value your sanity. Dreamcatcher, as the name might imply, can manipulate your nightmares so you regret ever mentioning his father in the first place.
Want to press Eightball's Berserk Button really, really hard? Make fun of Bamm-Bamm's condition or use any variation of the word "retard" in his presence. Go head. I double-dog dare you.
The Hitler Rants videos, particularly the commonly-used bunker scenes, involve Hitler himself melting down over anything, no matter how trivial. He also doesn't take well to the antics of Hermann Fegelein or Jodl's objections.
Jeff, the hero of Ewen Cluney's anime-inspired story "Interesting Times," is a nice guy, if something of a Weirdness Magnet. But that comic collection that he maintains? Don't mess with it. You will not like him if you mess with it.
A number of characters have one of these in The Mad Scientist Wars, most noticeably Andrew Tinker. No matter how tempted you are, or how true it is, do not call him 'girly' or refer to him as female. The last guy got pinned to a wall by his neck.
Kora, leader of the Media Whorz round table has no tolerance for bad movies using legendary quotes from great movies. When Uwe Boll's Bloodrayne film used a quote from The Godfather, he got angry enough to break.
J from Misadventures Of Awkward Black Girl hates when people touch her stapler. She ends up being forced to go to an anger management people with other people whose pet peeves include e-mails written in Comic Sans and people who don't let the microwave time run out.
Do NOT brag about torturing Sonya Blade in front of her partner, because Jax will punch your eye out (and this is before he gets his bionic arms).
Threatening the family of General Hanzo Hasashi (AKA Scorpion) is likewise a bad idea. As for killing them, well you might want to get your affairs in order. Not even death will stop him.
MSF High Forum: Fortunately, Mitchell (as an obvious example) keeps this strictly to real life, never letting it interfere with his duties as a GM. (Mainly, it's people who try to start R Ps over IM while he's working on MSF High, though he often simply logs off and cools down. He has gone into Angrish before, however.)
In NoobSparadrap of all people has three of them. Insulting his grandmother and hurting his friends are already bad enough, but if you really want to anger him, kill these pets he's constantly talking about. Preferably via burning the bag that contains them all.
Season 3 finale of Noob reveals that Sparadrap has three of these: do not insult his grandmother, do not hurt his friends, do not kill his pets.
So much that most of the times Doug went to conventions, there'd be at least one person who asks about the Bat-Credit Card, and then Doug would go into a comical rage and 'beat up' the asker. Creator Backlash has settled in really hard though, as he'll only do it once at each con (even said he would never do it again when he thought he could be done with Critic for good), has called it the worst part of his job and it's actually given him a Twitchy Eye. However, he still personally likes the joke when he looked back to it.
A recent Running Gag involves Douchey McNitpick playing the Doug theme when the Critic orders another piece of music he doesn't like to stop playing.
Because of his past experiences, he hates it when kids get mistreated in any way. He really gets disgusted during the Baby Geniuses review when he realized they must have pinched or otherwise put some mild abuse on the baby actor to get him to cry.
Whatever you did to make that kid cry, it wasn't worth it.
Doug Walker got extremely agitated over the presentation of a deeply serious, hotly debated, very adult topic like abortion showing up in Twilight Breaking Dawn, a movie that's part of a series he enjoys because of what he feels is its poor presentation and good only at "manipulating its target demographic." You can even see the anger seeping through during the bum review, and Chester A Bum NEVER gets angry at a film.
Speaking of Doug, go too far with insulting him while Rob is nearby and the big brother anger will flame you to a crisp.
Apparently though Dan Rizzo was doing a bunch of corrupt things behind everyone's back and abusing his admin powers, so he was already skating on thin ice at that point, that was just the final straw.
Doug is furious with the very idea of the "State Home For The Ugly" from The Garbage Pail Kids Movie, as shown here. Apparently the anger shown in the NC review wasn't played up for laughs, since he goes into a legitimate boiling rage while discussing the film after remaining relatively calm when discussing the other ones. He then delivers an especially brutal "The Reason You Suck" Speech at the film by saying it was worse than Manos because at least that was made by a farmer with no budget and wasn't intended for kids. He further goes on to say that the only good thing about the movie is that because there is nothing remotely good about it that it'll be quickly forgotten.
During his review of King's Tommy Knockers, he started ranting about how the deputy's husband not only was cheating on her with some woman at the post office, but also throwing away food she made for him, laughing at her behind her back, and sleeping with his mistress rather than looking for a missing child. He must have strong values if all of this bothered him.
Professor Otaku is prone to bringing himself to the brink of sheer breakdowns, but more often than not reigns himself in. However, MD Geist and Sorcerer Stabber Orphen Revenge have seen him lashing out at his hated foes of Moe and stupidity rather loudly.
Vixen wound up in such a rage that she denied her traditional Chill-out Food a mere 10 minutes into New Moon. The terror that was wrought on the universe will never been erased.
Unless you want to unleash Tranquil Fury, don't insult JesuOtaku's boyfriend Nash in the comments on their videos (especially for using an e-cigarette without knowing what they are), or directly attack him, his taste in music and his fans on the chat for his live radio show. The reaction you'll get can be best described as Linkara's reaction to Lian Harper's death in Cry For Justice, but directed at YOU!
Cin Wicked blows a fuse over the Canadian music groups on display at Disneyland.
Most Protectors of the Plot Continuum agents have a Berserk Button of some form or another. Common causes are messing with favourite characters, breaking the English language, trivialisation of child abuse, or misogyny, which offend the PPC community as well as in-setting.
It's well known that ProtonJon of Let's Play fame hatesInvisible Coin Blocks. Naturally, people sent him tons of Mario Rom Hacks with egregious levels of invisible coin blocks being used in tedious ways. Initially when he's angry he sounds like Ren from Ren and Stimpy, but over time it gets less comical and more like Regan from The Exorcist. Eventually Jon got so ticked that he responded by creating an incredibly tedious rom hack level himself with nothing but invisible coin blocks, and promised to make more levels with other things that irritated him if people didn't lay off some of these tricks. Here's a video of another Let's Player going through the level. To quote a youtube comment:
ProtonJon hates all of his old CatchPhrases being referenced, but special mention goes to "MOVE FASTER POKEY!"
Both he and Chugga also seem to get annoyed when people take their Vitriolic Best Buds relationship in the videos seriously since the two are actually good friends in real life.
NintendoCapriSun, though generally the quietest and nicest of the three, has a Played for Laughs berserk button in the form of green rupees. He also has a straight version in the form of his own constant failures, which usually result in either a Big "WHAT?!" or him temporarily becoming a Deadpan Snarker.
RWBY gives us YangXiaoLong. To whit: you pull out a lock of her hair, make sure you bring a shoe box with you, because you'll be going home in it.
While she doesn't get violent, Blake can barely contain herself when faced with Weiss Schnee's Fantastic Racism against Faunas. Her ear-blistering and very emotional arguing seems to be completely against her established character at first, and then shortly afterwards it is revealed that Blake is not only a Faunas but a former White Fang member as well. No wonder she took Weiss' comments so personally.
Sonia, from The Saints, hates the in-universe book and film series Bone Eclipse.
SCP-076-2, code-name "Able" is Ax-Crazy nearly all the time, but if he ever sees the symbol on SCP-073's (code-name "Cain") head, he goes utterly berserk and drops everything to attack Cain.
SCP-096, code-name "Shy Guy" is normally passive and no threat to anyone. However, if anyone sees it's face, in person, or through a photograph or video footage, it enters a screaming fury and runs towards the viewer at breakneck speed intending to tear the unfortunate person limb-from-limb, and nothing will stop it. It doesn't flinch at high-power weapons and will tear through concrete to get to you. Because of this, 096 is a huge threat to the public if it escapes; if an image of it's face was put on the news...
SCP-457, the so-called "Burning Man", hates water.
Being a family man, his anger is prevalent in the VOY episode "Real Life" during the clumsy use of a dying child as a plot device.
He has a low tolerance for 'zany' scenes of childbirth. His "Annoying Character" award for "The Begotten" went to everyone involved in the childbirth B-Plot. Everyone.
Episodes with Star Trek's "Prime Directive," are known to make him especially furious. He compares it to "Watching a child burn to death trapped in a car, and listening to it scream and beg for help... and then calling yourself a hero for letting it die."
He absolutely hates Good Old Ways aesops, pointing out how technology has improved our lives. He can tolerate scientific flubs and technobabble, but insinuating that cavemen are morally superior really grinds his gears, to say the least.
Their review of Maid RPG has them joking and laughing about the RPG and it's quirkiness, but as soon as they get to the page that has stats and NPC behavior advice for the ghost of a little girl and said advice revolves around what to do if the PCs seduce her, they drop the idea that it's just a harmless anime-inspired RPG and start calling it out.
Oh, yeah, and don't praise any Sonic the Hedgehog game past 1999 on Sonic Retro. You will be trolled.
Please don't ask Carlyle a Dark Knight question on ACOCO. He will flame you on air.
There's a lot more, but these are probably the biggest.
A few characters have at least one in Survival of the Fittest. For example, in v3, Darnell Butler has his protectiveness towards women extend towards being compelled to attack anyone he sees severely mistreating one, and Bobby Jacks becomes uncontrollable when called a murderer, causing a fight at the senior year's bonfire and, eventually, driving him to murder Tyson Neills. Especially notable since this seems to be the only thing that can make Bobby actually snap or get angry at all.
Unassuming little Hazel Callaway breaks bones whenever somebody speaks ill of her mum.
Steff has a large half-ogre boyfriend who is very, very protective of her.
The crew of Talk Radar does not appreciate people who call them biased, or ones who imply that they've accepted money for review scores. Many of them went to journalism school and see lying to their readers and listeners one of the worst things they can do.
In Tech Infantry, Erich Von Shrakenberg has a bit of a thing about aliens, and about rebels who compromise humanity's unity in the face of the alien threat. And then there's Hex, who alternates between flipping his lid whenever someone calls him "Hex," and flipping his lid whenever someone calls him anything but "Hex."
TV Trash: Chris "Rowdy" Moore (the character, at least) has gotten pissed off at a lot of bad TV. He finally went over the edge during his review of "Road To The Multiverse", in which a Disney styled sequence turned into a stab at Walt Disney's rumored Anti-Semitism, by having Mort BRUTALLY assaulted. He goes into the other room to scream, and he comes out with a rant that makes "The Reason You Suck" Speech he gave to Seth MacFarlane just two episodes later seem MILD by comparison.
Derek the Bard has a laundry list of them: Damaged library books; stupid weaknesses; people trying to steal from, infiltrate, or otherwise harm the Library; Adaptation Decay; deus ex machina abuse; lazy writing...
Longram from We Are Our Avatars hates genocide and anyone who inflicts misery on the innocent. Reckless Gun Usage is another as he demonstrates this by confiscating Pinkie Pie's plasma gun during an incident in battle.
Whether it has to do with that countdown or not, he seems to take issue with pros who make rookie mistakes in their work. Like a voice actor in RWBY checking his mic on the job.
Hades: "You left the sound of an adjusting microphone in your PROFESSIONAL, SOLD-ON-BLURAY WEBSERIES!! *sigh* We'll tolerate you..."
YouTube microwave guru Kenny Irwin (known also as "dovetastic", "dove" for short) is generally very cordial and accepting of dissenting viewpoints, even thanking people for taking the time to watch his video that clearly disliked it. And if you find his dislike his narration, he won't argue with you since he dislikes his own voice. He also supports other microwave shows. However, there are two ways to push his berserk button. The first one is by claiming that he's copying Is It A Good Idea To Microwave This, a show that started almost a year and a half after his did. The second one is to insult his religion. Any comments about destruction of the Qu'ran or hateful comments about Islam in general will also draw his ire. Repeatedly insisting that he's copying the other major microwave show or insulting Islam will result in being permanently blocked. He's stated repeatedly that it's not Jon or his microwave show that he dislikes, it's the fanboys that spam other microwave shows with hateful comments.