Berserk Button: One Piece

  • Monkey D. Luffy of One Piece. He has two; run far, far away if you damage his hat, or hurt one of his best friends — or for that matter, one of your own. Very nicely seen here.
    • The entire plot of One Piece seems to be based around this. If you fight Luffy without having hurt one of his friends, you at least have the possibility of victory. If you hurt one of his group... not so much.
    • And if you hurt one of YOUR group members, you are so screwed.
      • A notable example is Captain Kuro, whom Luffy defeated in righteous anger for turning on his own crew.
      • Another notable example is Arlong, who made Nami cry after not only killing her mother years before, but using Loophole Abuse to undo her EIGHT YEARS of work to earn her freedom.
      • Boa Hancock and her sisters petrify and almost kill their subordinates, which sets Luffy off. Once they're restored, though, Luffy forgives them and doesn't hold a grudge.
      • Another notable example is Caesar Clown, who gleefully sacrifices his own Mooks for the sake of his experiments. He got constantly punched to the face and finished with an Armament-haki giant Bazooka for his trouble.
      • Doflamingo's treatment of Bellamy is one of the angriest we've seen Luffy. After being forced to One-Hit KO Bellamy, despite tears running down his face the entire fight, Luffy looks up to the sky and screams "DOFLAMINGOOOO!!!!"
    • Never hurt people who shown hospitality to you. He won't hesitate to try and kill you, even if you're his own crewmate. If only he gave Zoro the opportunity to explain why he fought the people of Whiskey Peak...
    • Do NOT say you're the one who is gonna be Pirate King within Luffy's earshot (or at least not as mockery; he at least tolerates the ones he sees as rivals).
    • As of the timeskip, he's also not terribly thrilled with people who harm brothers.
      • Another new way to piss him off is to mock his brother Ace's murder. So long, Don Chinjao.
    • Hody Jones threatened Luffy's friends, threatened the Kraken's brothers (Luffy having tamed and befriended the Kraken several chapters sooner), and claimed to be pirate king. He's lucky Luffy just gave him a royal ass kicking.
    • While played more for comedy, taking his meat is also a fine way to piss him off.
  • Zoro is normally the type of guy who doesn't take revenge on things. But once, Ohm's traps brutally cut and mangled Chopper...
  • Do not spend money without consulting Nami first. Do not steal anything from her, especially if she stole it first. The repercussions for those two can be comical… but above all else, do not hurt the people she cares about. Miss Doublefinger, Kalifa, and Absalom are among those who wound up electrocuted as a result of doing this.
  • Usopp is a Lovable Coward, and would rather run away than fight. But if you insult Luffy in front of him, you're doomed; he may be the weakest of the Straw Hats, but he's still a One-Man Army when he needs to be, and he won't put up with insults to his captain. Mr. 4 and Miss Merry Christmas found this out the hard way, after hitting him with enough force to kill a normal human a thousand times over.
    • Another one with Usopp is his friend Kaya; he wouldn't hesitate to risk his life for her, and hearing Kuro hammer home how he was Evil All Along made Usopp want to kill him. But this button isn't pressed after the Syrup Village arc, for obvious reasons.
    • Another one of his would be making fun of his father, Yassop. When Kuro (as Klahadore) does this, he gets a punch in the face for his words.
  • Sanji's biggest berserk button is when anyone wastes food, including using food to fight with. He and Old Man Zeff almost died of starvation when Sanji was a child, so this one's very understandable.
    • A close second is if anyone mistreats a woman, especially Nami, Vivi, or Robin.
    • A third is his wanted poster. Don't bring it up, but if you do, do not say it looks like him.
  • Chopper will beat the hell out of you if you take the concept of life lightly. He also lost his shit when he found out that Caesar Clown was experimenting on children and kept them in captivity with drugs.
  • Robin is also quite angered by those who disrespect history, as she demonstrates on Yama in the Skypiea arc. She also gets angry when people talk about her past and why she got her bounty often because what they're saying is not true.
  • For Franky: do not hurt his Family. Do not insult his master/foster father Tom. And do not take his speedo.
  • Brook's afro is precious to him as it is the last defining feature he has that his old friend Laboon can recognize him by. So... Do. Not. TOUCH. THE. AFRO.
    • As of chapter 645, Brook hates people who waste lives. And considering his past, this is understandable.
      • In One Piece Film: Strong World when man-eating ants ignore Brook because he was considered "leftovers", he angrily states it was "a bit inconsiderate" and proceeds to cut all the ants down. This Berserk Button is pushed again in Chapter 682, when the little dragon from Punk Hazard looked disappointed that Brook didn't have any meat on his bones. This actually serves as a minor plot point, as it reveals that Kinemon also hates dragons, but for a much darker reason.
  • If you so much as injure any of Shanks' friends (such as Luffy), expect Shanks to show no mercy.
  • Buggy the Clown. If you insult his clown nose, he will freak out, and given the chance, he will shoot you with a cannonball capable of destroying several city blocks. When you account for the fact that he tends to mishear things and assume they were insults to his nose…
  • Rob Lucci, Dragon-in-Chief of the CP9 arc. Typically, he's cold, calm, and collected, but he does not take kindly, at all, to mockery. And he's more than dangerous enough when he's not angry.
  • Boa Hancock. If you so much as lay a hand on Luffy, and not even a Logia Devil Fruit Power will save you from the Snake Princess tearing your ass to shreds. Yeah, when Sengoku mentioned that Hancock is strong? That is NO Informed Ability, she's the strongest Action Girl in the whole world.
  • Go ahead, do anything to seriously harm any of Whitebeard's "Sons." Go on, do it. Then pray to whatever deity you worship that he doesn't find you.
  • Portgas D. Ace can be seen as a deconstruction of this trope because in the Marineford arc, when he was rescued from execution, he let his emotions get the better of him. When Akainu starts to insult Whitebeard, Ace is drawn into a hopeless battle that ultimately kills him. This happened despite everyone, including Whitebeard, warning him to run away.
  • Averted by Hatchan when Zoro cuts his hair. He... decides to forgive Zoro because it's only hair and it'll grow back.
  • Gekko Moria has two notable ones. First is his old crew of True Companions, who were massacred by Kaido; just thinking about it is enough to provoke a Villainous Breakdown. Almost as big of one is stating, or even just implying, that he's weak.
  • If anybody mocked Eustass "Captain" Kid's dreams about becoming the pirate king, he wouldn't hesitate to straight out kill them for that.
  • Smoker cares deeply about his subordinates, even if he doesn't show it. Just try and lay a hand on them. Vergo, we're lookin' at you.
  • Bartolomeo, a character who first appeared in the Dressrosa arc, was introduced as a rude, Ax-Crazy Jerkass. It's bad enough if you provoke him at all, but he absolutely worships Luffy; say one bad word against him in this fanboy's hearing, and it will be the last thing you ever say.
  • Kelly Funk from the Dressrosa arc, a boxer short in stature and temper with prodigious strength but no endurance at all. Call him shrimp or anything of the sort, and he'll pummel you within an inch of your life. As for the "no endurance" part that makes him less than a threat to those who are at least as strong as he, his Devil Fruit powers let him merge with his brother, a Gentle Giant with a ridiculously strong and sturdy body. When that happens, the threat level skyrockets.
  • Out of all people, Trafalgar Law's berserk button seems to be a massive one. If anyone insults, laughs at, or slights Donquixote Rocinante, a.k.a. Corazon, he noticeably loses his cool and flies into a violent, screaming fit. And God forbid if you actually kill him. After Doflamingo murdered Corazon, Law vowed to murder Doflamingo at all costs; his entire career as a pirate, thirteen years of it, has been focused on avenging the man who saved his life, even if it cost him his own.
  • Donquixote Doflamingo has two notable ones: people who would mock or insult his family in any way, and people who bear the name of D.
    • One of Doflamingo's top three executives, Pica, also has one: do not mock, insult, or laugh at his voice. And unfortunately, in spite of—no, because of the fact that he is a very tall, very muscular, and very powerful human, this button is pressed too often thanks to how little his high-pitched voice suits him. Heck, even Zoro was incapable of holding back his laughter.
  • Do not try to harm Monkey D. Luffy. Because if you do, his big brother Sabo will find you, and he will murder you for daring to go after his precious baby brother who, after the death of their other brother Ace, is the only family he has left in the world.