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Kai Chisaki — Overhaul

Voiced by: Kenjiro Tsuda (Japanese), Kellen Goff, Caitlin Glass (young) (English)

Debut: Chapter 115 (Manga), Episode 62 (Anime)

Playable in: My Hero One's Justice 2

Quirk: Overhaul

Rank: B

https://static.tvtropes.org/pmwiki/pub/images/overhaul_action_pose_7.png
"Don't touch me."
Click here to see him unmasked
Click to see his fusion with Shin Nemoto.
Click to see his fusion with Rikiya Katsukame

"There are so many capable men... and all they can think to do is rob a convenience store? Kinda weird... you'd think a group this big might just, y'know... have bigger goals than that... You're all sick. And you need a cure."

The second in command, and current leader in his boss's absence, of the Shie Hassaikai. A strange, mysophobic man obsessed with cleanliness and sickness, he wishes to restore the Shie Hassaikai to its former glory using special bullets and his daughter, Eri.

His Quirk, "Overhaul", allows him to disassemble and reassemble anything that he touches with his hands.


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    A-I 
  • Abusive Parents: While he isn't really Eri's father, he pretends to be so he can corral her more easily. He shows absolute contempt for the little girl, seeing her as nothing more than a tool for his plan. Said plan involves draining her blood to make his Quirk-destroying drug. Whenever she runs out of blood to give, he uses his Quirk to disassemble and reassemble her back to square one, a process that's noted to be very painful and has clearly traumatized her. Mirio is completely horrified when he learns about all of this.
  • All for Nothing: By the events of the Paranormal Liberation War Arc, everything Overhaul has accomplished is undone. His organization is completely dismantled, he loses his arms (and his Quirk) to the League of Villains, the Quirk-destroying bullets he created are now gone and the one person he did hit with one, Mirio, had his Quirk restored.
  • Always Someone Better: Subverted and deconstructed. Initially, Overhaul appears to be Shigaraki's better in every way: he has more resources, more manpower, a wider sphere of influence, better finances, is a more effective long-term planner, and his Quirk is even a better version of Shigaraki's Decay. By all accounts, he would have been the next Big Bad, reducing Shigaraki to a Big Bad Wannabe, but it's because of this that Shigaraki steps up his game and ultimately outgambits him. His scale as a potentially worse threat than the League drives both the heroes and villains alike to bring him down, ending with Overhaul's organization dismantled, and Shigaraki removing his arms to render him Quirkless and using him as a stepping stone by reaping the benefits of his life's work.
  • Animal Motifs: Everyone in his group wears some kind of beak-like mask, much like his plague doctor's mask, making the lot of them look like birds. He himself is also occasionally represented with molting black feathers.
  • Antagonist Abilities: Overhaul has an unusually powerful Quirk that gives him a great advantage in fights despite his lack of actual combat skills. Even when meeting him for the first time, Mirio notices he isn't someone they can just fight and defeat easily. His Quirk even allows him to turn into a kaiju-like monster by mixing himself with Rikiya and the ground.
  • An Arm and a Leg: He ends up losing both of his arms to the League of Villains. Mr. Compress takes one by compressing it off his body, while Shigaraki takes the other by decaying and cutting it off before the effect spreads to the rest of his body. While Overhaul could reassemble lost or damaged limbs without issue, his Quirk can only be activated through his hands, meaning this disfigurement has effectively rendered him Quirkless.
  • Arc Villain: As the leader of the Shie Hassaikai, he serves as the primary antagonist of the Internship Arc and the shadow of his actions toward Eri persists in the U.A. Culture Festival Arc.
  • Ax-Crazy: As if he wasn't vicious enough as he blows off Mr. Compress' arm for merely touching him. He goes straight off the deep end fighting Mirio, who has the combat skill to match him and maniacally disgracing his attempts to save Eri. Even against his final opponent, Midoriya, he intends on gaining more power by fusing with his subordinates, thus becoming monstrously insane and attacking wildly as if he were a raging animal.
  • Bad Boss: He's fully willing to use his subordinates as meat shields, only seeing their deaths as minor inconveniences, and even kills a lackey because Eri escaped under his watch. Outside of his inner circle and the Eight Bullets, most of his underlings actually despise him and only follow him either out of fear or loyalty to the old boss, with some of them complaining when interrogated by heroes during the raid about Chisaki "taking a villain's name" and acting like a supervillain instead of in accordance with the family's traditions.
  • Bad Powers, Bad People: His Quirk has equal potential to heal and destroy, but his callous, harsh attitude makes it clear he uses it for the latter more often.
  • Badass in a Nice Suit: His normal attire consists of a black suit with a white necktie under his bomber jacket. He's seen wearing other suits in flashbacks, like a black one with a white shirt he wore while recruiting Rappa, and a white one he wore when he recruited Nemoto.
  • Beauty Is Bad: He is a Bishōnen, but mysophobic and antisocial sociopath.
  • Because You Were Nice to Me: Exploited mercilessly. Despite treating the vast majority of his underlings like expendable pawns, Overhaul's inner circle have Undying Loyalty towards him because he specifically uplifted them after they crossed the Despair Event Horizon. Nemoto, Hojo, Setsuno, and Tabe are the most obvious of these, and the only ones that are able to see through this false empathy are Rappa and the yakuza who are loyal to the old boss. Tamaki likens it to brainwashing.
  • Berserk Button
    • In his earlier years, he was easily enraged by people looking down on the yakuza who took him in as a child. He's mellowed out of this somewhat in the present, but this button was replaced by an even more sensitive one.
    • He really doesn't like being touched, as Magne and Mr. Compress found out the hard way.
    • People referring to him by his real name since he gave up his old identity once he became Overhaul and has no use for it.
  • Big Bad Wannabe: On one hand, Overhaul is a genuinely dangerous villain whose resources and manpower make him a bigger, more immediate threat than Shigaraki and his League, and his plan would have shook hero society to its core had it succeeded. However, his attempts to become the new "King of the Underworld" never reaches fruition as his attitude earns him too many enemies, resulting in the heroes and villains alike bringing about the Shie Hassaikai's downfall and his plan being foiled before it can get off the ground. To add insult to injury, Shigaraki steals his life's work to elevate the League of Villains and leaves him to fade into obscurity.
  • Boomerang Bigot: Despite having a Quirk himself, and using his Quirk to further his own goals, he sees Quirks as a disease and despises other Quirk users.
  • Break the Haughty: At the start of the Internship Arc, Overhaul dismisses the League of Villains as being overhyped and makes a big show about recruiting them onto his side for his grand, Evil Plan. By the end of the arc, his entire operation is in shambles thanks to a well-planned assault by Sir Nighteye's operation, a fully empowered Midoriya crushes him in a duel with the help of Eri, the girl he tortured for his plan, and he's left at the mercy of the very same "overhyped villains" he had earlier derided.
  • The Bus Came Back: After being defeated and imprisoned at the end of his arc, he returns in Chapter 297 during the Tartarus breakout, albeit as a mentally broken wreck.
  • Casting Gag: This isn't the first time Kellen Goff has voiced a mafia leader who is also an abusive father figure.
  • Character Tics: When he's stressed, his face and then the rest of his skin breaks out into hive spots and lines. Them appearing with increasing speed and number during his fight with Mirio is an indicator of an internal Villainous Breakdown, despite him appearing calm on the outside.
  • Clipped-Wing Angel: While he's definitely stronger when fused with Rikiya, Midoriya's sheer speed thanks to 100% Full Cowl renders that strength and his own Touch of Death Quirk nigh-useless, since he can neither touch nor even react fast enough to Midoriya's movements. As such, his intimidating kaiju form just makes him a big, slow target for Midoriya to pound on without remorse. The biggest "threat" Midoriya faces in their fight is Eri, as while her Quirk allows him to use his Quirk at 100% by quickly rewinding his injuries, he needs to keep taking damage or the Quirk will outpace and kill him.
  • Combat Medic: He's known to heal his minions from injuries mid-combat, and even revive someone he just blew up just to make a point.
  • Cool Mask: He wears a Plague Doctor's mask.
  • Creepy Monotone: He talks like this in the English dub whenever he's at least relatively calm, courtesy of Kellen Goff.
  • Curb-Stomp Battle: On the receiving end of one from 100% Full Cowl Midoriya. Thanks to Eri mitigating the risks of One For All at that power output, Midoriya utterly thrashes him in only two chapters.
  • Death is Cheap: As a result of his Quirk, he can kill and bring people back to life freely by tearing them apart and putting them back together again in an instant, so he doesn't really care if his underlings die and freely kills them when he gets pissed off. Rappa was apparently killed and brought back six times due to challenging him to fights. But if someone is already long dead or Overhaul disassembles someone past the point of no return, then that's that. He did this regularly to Eri so he could harvest her blood.
  • De-power: Because his Quirk can only be activated through his hands, the League removing both of his arms has rendered him functionally Quirkless.
  • Despair Event Horizon: His total defeat left him completely drained of will, remaining emotionally detached and reacting with an almost dead monotone to Shigaraki when he attacks his police convoy with the intent of getting even with him for what he did to the League. Shigaraki steals his Quirk-destroying bullets right in front of him, then destroys both of his arms, thus removing his Quirk. While horrified, what truly pushes Overhaul well over the horizon is when he realizes that this means he can no longer heal his boss from the coma he put him in, and can only let out a truly heart-wrenching Howl of Sorrow.
  • Devour the Dragon: When things start looking bad for him, he seemingly kills Nemoto and fuses with him. Later, after being de-fused, he does the same thing to Rikiya. Both are brought back after Eri rewinds the fusions.
  • Discard and Draw: Overhaul tries to fuse with Nemoto to gain more power, but Eri's Rewind Quirk undoes the fusion. Overhaul simply trades up for the much bigger Rikiya and fuses into an even more horrifying monstrosity.
  • Disproportionate Retribution: He blows off Mr. Compress's arm not for attacking him, but for simply touching him.
  • Do Not Call Me "Paul": Overhaul hates being referred to be his birth name and, depending on his mood, reprimands or kills anyone who presumes to use it.
  • The Don: In contrast to Shigaraki's League of Villains, he's the second in command and acting leader of an organized crime syndicate with plans on bringing a proper return to the yakuza.
  • Establishing Character Moment: His first meeting with the League of Villains completely sets up his character:
    • First, he challenges Shigaraki for the top spot of the villain world by criticizing the League's lack of plans before trying to enlist them as his minions to fund his Evil Plan. This sets him up as an Foil to Shigaraki.
    • Secondly, he easily kills Magne with a single touch by blowing her up, complaining about how messy things are, and then blows off Mr. Compress' arm for simply touching him. This further parallels him with Shigaraki as both have a Touch of Death Quirk, while also showing the audience how little he cares about other people's lives.
    • Thirdly, when Shigaraki tries to retaliate by decaying him, he summons a minion to take the hit for him and then summons the rest of his crew, with whom he leaves. This shows that he's a Bad Boss who has no issue with his minions dying for his sake.
  • Even Bad Men Love Their Mamas: The Shie Hassaikai's old boss, who took Overhaul in when he was young, is the only person Overhaul cares about beside himself. He even created his whole Evil Plan with the intention of saving the yakuza and repaying the Boss's kindness. However, the Boss was appalled by the lengths Overhaul was willing to go to do so, specifically the torment Eri would have to go through and forbade it. Overhaul disagreed with and decided that only he knew best about what the Boss would want, so he put the Boss in a coma so he wouldn't be able to interfere with the operation. Overhaul genuinely believes that what he's doing is in the Boss's best interests and that the Boss simply needs to see the plan come to fruition himself to understand that too. After being freed from prison, it's shown that being unable to heal his boss has completely destroyed his sanity, with the only thing he cares about upon being freed is reuniting with his boss. He is even shown crying while he begs to go back to the boss so he can apologize.
  • Even Evil Has Standards: For all his reprehensible acts and personality, Overhaul seems genuine when he corrects his mistake referring to Magne as a man while apologizing to Toga and Twice for killing her.
  • Evil Plan: To get the Shie Hassaikai back into power over the underworld, Overhaul intended to create both a Quirk-destroying drug and a Quirk restoring serum using Eri's Quirk, flesh and blood as base, selling them to villains and heroes, respectively, to create a monopoly over an untapped market regarding control of Quirks, essentially destroying the world as they know now that Quirks aren't safe. This is ultimately deconstructed when it turns out that, despite his formidable abilities as a long term thinker, he is ultimately undone by his inability to adapt when things stop going according to plan.
  • Evil Sounds Deep: Kenjiro Tsuda plays him with the husky baritone most people associate with his voice acting, which lends itself well to Overhaul's menacing aura.
  • Evil Uncle: Although he pretends to be Eri's father, he's actually her adoptive uncle on her mother's side.
  • Evil Virtues: Believe it or not, Gratitude and (a warped idea of) Love. Overhaul is sincerely grateful to his adoptive father, the boss of the Shie Hassaikai, for taking him in as a child, and wants the Hassaikai to rise to its former glory for his sake. So much that he was willing to put the boss in a coma when said boss disapproved of his methods for making Quirk-erasure bullets, believing what he was doing was in the boss's best interests. When he loses both arms courtesy of Mr. Compress and Shigaraki, his first horrified thought is not that he's lost his Quirk, but that he can't heal the boss of the coma he put him in.
  • Exact Words: He believes that the sick villains must be cured and this is exactly what he has done to Reservoir Dogs, by healing them from their diseases after defeating them.
  • Explaining Your Power to the Enemy: Overhaul gives Midoriya a short description of Eri's Quirk while telling him that she will kill him. This bites him in the ass big time when Midoriya uses this knowledge to unlock a Deadly Upgrade and proceeds to cumbstomp Overhaul.
  • Family Relationship Switcheroo: When he meets Midoriya and Mirio, he claims to be Eri's father. However, a flashback in Chapter 156 reveals that she's actually the granddaughter of the Shie Hassaikai's old Boss, who was his Parental Substitute, meaning that he's actually her adoptive uncle.
  • Fatal Flaw:
    • Strategy Versus Tactics - despite his abilities as strategist, Overhaul's poor short-term decisions and inability to adapt when things stop going according to plan ultimately leads to the downfall of both himself and his organization.
    • His lack of respect for his underlings becomes a key part of his defeat—or more specifically, failing to understand that Shigaraki does respect his underlings. He kills Magne and Shigaraki kills one of his men; as far as Overhaul is concerned, they're square. The League hates him for what he did, and Toga and Twice work against him multiple times after he invited them into his base. The heroes might not have won without Toga and Twice, and the League definitely wouldn't have been able to intercept the police transport and steal all his hard work.
    • Overdependence on his Quirk. For all his ranting about Quirks being a disease, Overhaul is overly dependent on his own. As shown in his fight with Mirio, Overhaul is sorely lacking in close quarters combat. Even after erasing Mirio's Quirk, Overhaul still can't land a hit on him without the use of his Quirk. In revenge for removing one of Mr. Compress' arms and the death of Magne, Shigaraki removes both of Overhaul's arms, leaving him a "helpless, Quirkless, worthless man".
    • Aggression. Overhaul is an extremely dangerous individual, a ruthless criminal kingpin and a genius, but he was too ambitious for his own good. Instead of being patient and waiting for things to cool down after All Might's retirement and All For One's imprisonment, Overhaul quickly tried to take All For One's place as Japan's greatest criminal lord. Unfortunately, his impatience and lack of diplomacy not only gained him attention from pro heroes, but also alienated the League of Villains as an ally. He quickly earned many more enemies than he did allies, which was a major contribution to the downfall of his criminal empire.
  • Fate Worse than Death: When the League of Villains attack the prison convoy Overhaul's in, Overhaul suspects that Shigaraki has come to kill him, but Shigaraki has much more sadistic plans in mind. He lets Mr. Compress pay Overhaul back for the loss of his arm by compressing Overhaul's left arm off his body. Shigaraki then proceeds to steal the two cases necessary for the production of Overhaul's Quirk neutralizer. Afterwards, Shigaraki decays and severs Overhaul's right arm, permanently crippling him and making it impossible for Overhaul to activate his Quirk. Finally, he taunts Overhaul with the knowledge that the League of Villains will be the next overlords, not him. Furthermore, unbeknownst to Shigaraki, this leaves Overhaul with no way to heal his adoptive father from his coma anymore.
  • Fusion Dance: He can use his Quirk to fuse with others by disassembling both their body and his own, and then amalgamating the two.
  • Good Scars, Evil Scars: It's a bit hard to notice, but he has a faint scar near his hairline on the upper left side of his forehead, the kind that looks like it was from surgery. The volume 17 extras reveal that he got the scar during his scuffle with Magne.
  • Good Powers, Bad People: His Quirk has both Touch of Death and Healing Hands functionality, but he's much more prone to using the Touch of Death and is an utterly repulsive person.
  • Gory Discretion Shot: When Overhaul's limbs are torn off, Kōhei Horikoshi makes an effort to avoid showing us what it looks like, only depicting what it looks like after he's had them severed and obscuring any clear shots of the bloody amputated spots.
  • Harmful Healing: Overhaul can use his Quirk to heal people completely, but the patient has to experience the agonizing pain of having their body torn apart on a molecular level and forcefully rearranged into a new shape.
  • Hate Sink: Overhaul is a ruthless yakuza boss who abuses his young ward, Eri, draining her blood to make Quirk-destroying bullets, reassembling her body when she runs out of blood to give, and calling her a cursed being born to destroy people. The ordeal has traumatized her so much that even after his defeat, she doesn't know how to smile. He treats his subordinates no better, using one as a meat shield against Shigaraki, killing another for failure, and forcing two to become part of his One-Winged Angel forms. He has Nemoto use a Quirk-erasing bullet on Mirio, destroying the Nice Guy's promising career as a hero. Later chapters somewhat downplayed this, as they reveal that he's a Well-Intentioned Extremist who wants his syndicate back to power in hopes of repaying his old boss, but even then, he put his boss in a coma in order to do so because his boss was against his methods. He also despises how heroes and villains use Quirks, berating them as narrow minded, even though he will use his Quirk to murder people for petty reasons. Laser-Guided Karma hits him when Shigaraki and Mr. Compress destroy his arms to avenge Magne's death and the loss of Mr. Compress' left arm. Overall, his character deconstructs this, because it makes him nothing but enemies when dealing with others, and a common target that people ideologically opposed to each other have no problem prioritising as the bigger problem to take down, leading to the League of Villains and the heroes technically collaborating to take him down during the raid.
  • Hates Being Touched: Exaggerated. When Mr. Compress touches him, his mysophobia triggers hives to break out all over his skin. Cue Mr. Compress losing his entire left arm. He also kills Magne while irritably stating that he hates being "so damn dirty". It's implied that this attitude is due to his perception of Quirks being a side effect of a disease that has mutated the population, setting off his germophobia when he's in physical contact with "infectious" carriers.
  • Healing Factor: During his battle with Midoriya, the close proximity to Eri's out-of-control Quirk undoes any damage his final form takes. It doesn't end up mattering.
  • Healing Hands: When he disassembles and then reassembles someone, he resets their body to its base form, healing them of their injuries and curing them of any illnesses such as the Reservoir Dogs gang who at first appear to killed, only to show up afterwards completely fine and are amazed that they're actually much better off.
  • Hero Killer: He officially becomes one when the catastrophic wounds he deals Sir Nighteye are so bad, he dies later that evening — not even Recovery Girl could help him. It makes Overhaul's Laser-Guided Karma even more deserved.
  • Howl of Sorrow: Overhaul lets out an agonized scream of despair the League steals his life's work and cuts off his arms, leaving him a functionally Quirkless, broken man who's lost all his life's work and can no longer undo what he did to his father figure.
  • How the Mighty Have Fallen: The loss of his arms reduced him from a feared yakuza boss to a blubbering wreck completely dependent on Lady Nagant.
  • Humiliation Conga: He suffers one bad ordeal after another, and every single one is well-deserved. First, he gets thrashed by a de-powered Mirio, then gets another beating from Sir Nighteye, and is on the receiving end of probably the most one-sided Curb-Stomp Battle in the series by Midoriya going 100%, with some help from Eri, and is beaten in just two chapters. Finally, the League of Villains get their own slice of the revenge pie by stealing his work and destroying his arms, leaving him a pathetic, Quirkless wreck.
  • Hypocrite: Overhaul's arrogance and self-centeredness leads him to feel the need to preach to others, even when he himself is guilty of what he condemns others for.
    • When they first meet, he chides Shigaraki for losing so many powerful members of the League of Villains, such as Stain, Muscular, and Moonfish, so easily. Meanwhile, Overhaul has an entire group of powerful yakuza that he's dubbed expendable and is known to kill his followers over minor mistakes. When the heroes raid his headquarters, he has absolutely no issue leaving pretty much his entire crew, sans Chronostasis and Nemoto, behind to escape.
    • He utterly disdains the idea of breathing the same air as others without his mask and fully willing to kill people just for having the nerve of touching him, even if it's just the jacket. Yet when backed in a corner, he doesn't hesitate in the slightest to willingly merge a complete stranger's genetic material into his body or breathe the same air as everyone else the moment his mask becomes his actual mouth, thinking nothing of it. And then when his mask gets knocked off, he starts screaming and continues fighting on; the mask is hinted to be a token of his vanity and degrading sanity after becoming obsessed with sterility as he used to get along just fine without it.
    • He wants to eradicate Quirks from society, but is extremely reliant on his own Quirk. Shigaraki calls him out on this one.
    • He berates heroes and villains as small minded for how they use Quirks, even though he will murder people for very petty reasons with his Quirk.
    • His stated goal is to destroy Quirks completely and purge them from society. But we eventually learn that once he's completed his Quirk erasing bullets, he plans to develop Quirk restoring bullets so that he can sell the destroying bullets to one side of the law and the restoring bullets to the other side. In the end, he cares more about money and power than he does his own beliefs.

    J-Y 
  • Jerkass: The genuine loyalty and compassion he has for his boss is his only saving grace. Otherwise, he's pure scum.
  • Jerkass Has a Point: Deconstructed. While he was correct to point out that Shigaraki's lack of planning and loss of big players like Stain, Muscular, and Moonfish looks bad, he's so condescending and insufferable, the League immediately despises him and conspires to bring him down.
  • Kick the Morality Pet: He created his Evil Plan with the intention of saving the yakuza and repaying the Boss's kindness to him throughout his life, but the Boss was appalled by the plan and forbade it. Overhaul, thinking he knew better, put the Boss in a coma so he wouldn't be able to interfere with the operation, planning to fix it once his plans had come to fruition and convincing himself that surely seeing what a success his plan was would bring his father-figure around.
  • Knight of Cerebus: He's the first villain to actually murder major characters in the series upfront, both Magne and Sir Nighteye, a villain and a hero, respectively. He also nearly killed several others, and introduced the prospect of Character Death to the story and how sometimes a hero can pay the ultimate sacrifice.
  • Lack of Empathy: Zigzagged. As shown by his treatment of Eri and his minions in the Hassaikai, Overhaul demonstrates almost no care for anybody around him, willing to sacrifice or kill his subordinates in a heartbeat if it will benefit him or if he's annoyed by their performance. His abusive treatment of Eri and utter lack of remorse for his torture and emotional blackmail of her verge on making him The Sociopath, but he does have one, and only one, person besides himself he cares for: The Hassaikai's old boss, who adopted Chisaki and tried to give him a better life growing up than he would have had as an orphan. However, even this care wasn't enough to stop Overhaul using his Quirk to put the boss in a Convenient Coma when he felt the boss' Noble Demon tendencies were crippling the Hassaikai and leading to their current decline. On the other hand, when Mr. Compress and Shigaraki remove his hands, and his ability to restore the boss, Overhaul is later shown to be driven utterly mad from grief over his mistake, having thrown away all his ambitions and obsessed with finding the boss' comatose body so he can apologise to him. Midoriya actually calls him out over this singular instance of human emotion from him, stating to Overhaul that he'll help him meet the boss— but only if he sincerely apologies to Eri first for the abuse he'd put her through, a concept that Overhaul seems to struggle with.
  • Laser-Guided Karma:
    • He tormented a little girl for a very long time to mine her of her Quirk, and forced the League of Villains to follow his lead after he killed Magne and crippled Mr. Compress. By the end of the arc, not only is his organization crushed, but after the heroes defeat him, the League of Villains decide to mount an attack against him while he is helpless and steal the materials used to make his Quirk nullifying bullets, which were used to remove Mirio's Quirk, and destroy his arms that he needs to use his Quirk, taking away everything Overhaul ever had and leaving him functionally Quirkless and broken.
    • When he and Midoriya meet again after the latter's fight with Lady Nagant, Midoriya promises to help fulfil her deal with Overhaul to meet the boss after he shows his sincere remorse and empathy towards his adoptive father's current condition— but only if Overhaul can sincerely express that same empathy towards Eri and apologise to her for everything he'd put her through. Overhaul's expression at that statement implies he struggles to grasp the concept, meaning that the same Lack of Empathy that made him such an abusive monster towards Eri is now the one thing that's denying him his only remaining desire in life.
  • The Leader: He's the leader of the Shie Hassaikai. The invasion reveals that he is not well liked by his mooks, who prefer the old Boss over him with only his inner circle and the Eight Bullets of the Hassaikai, sans Rappa, actually respecting him.
  • Logical Weakness:
    • His Quirk's ability to disassemble and reassemble just about anything is extremely versatile, but he actually has to physically touch his target to make it work. As such, Mirio's Intangibility Quirk lets him pound his ass, which is why Overhaul goes to great lengths to remove him from the picture.
    • Overhaul takes some time to assemble and disassemble, something Midoriya exploits to prevent him from healing. He's defenseless against overwhelming power and speed.
    • He needs his arms to use his Quirk, so now that the League of Villains cut both of his off, he's effectively Quirkless.
  • Manchild: After Lady Nagant breaks him out of prison, his constant pleading for his boss combined with his total dependence on Lady Nagant (she's even shown dressing him at one point) makes him come across more as a little boy crying for his father than a fearsome villain.
  • Made of Iron: Despite his Quirk having nothing to do with increasing his physical abilities, he's quite tough; he takes multiple punches from Mirio in their fight without any protection, a notable feat since Mirio is strong enough to casually one-shot almost all of Class 1-A as well as two of Overhaul's own lieutenants. Even more impressively, he takes a 100% One For All punch from Midoriya directly to the face and doesn't die.
  • Meaningful Name: His surname contains the kanji for "to treat (disease); to cure", referring to his Healing Hands abilities.
  • The Mob Boss Is Scarier: Invokes this reaction in his minions, as can be seen when Bubble Girl speaks with the captured mooks who rushed out to buy Overhaul time to escape, even though they don't stand a chance against the heroes and police:
    Bubble Girl: I can't believe you all came out to try and stop us. It's hard to believe you're sane.
    Yakuza: We're sane. Everyone going out to fight right now is sane. If we didn't do anything, then Overhaul would take our lives.
  • Morality Pet:
    • Overhaul has genuine love and compassion for his father figure, the old Shie Hassaikai boss, to the point where he attempts to reshape the yakuza as a form of repayment for the boss taking him in as a child. Of course, said methods are extremely twisted, to say the least.
    • Outside of the old boss, his Childhood Friend Kurono is the only other yakuza member he shares a mutual friendly bond with.
    • Eventually, he's on the other end with Lady Nagant, the only Tartarus inmate to take pity on him in his broken state, releasing him from his cell and looking after him as she goes after Midoriya.
  • More Hateable Minor Villain: In the Big Bad Duumvirate, Shigaraki is a Tragic Villain and Benevolent Boss while All For One has entertaining qualities with his intelligence and power. Overhaul, on the other hand, is a despicable Jerkass who manipulates, uses and murders his minions without a shred of remorse and abuses and tortures Eri, a child, for years while gaslighting her into feeling it's her fault. He also causes Mirio to briefly lose his Quirk and murders Sir Nighteye, making him the first Hero Killer of a major character in the franchise.
  • My God, What Have I Done?: After the League of Villains steal his life's work and cut off his arms, Overhaul realizes that he now has no way of undoing what he did to his father figure, leaving him unable to do anything but scream in agony at the situation and essentially go mad out of guilt.
  • My Species Doth Protest Too Much: One of the biggest problems Overhaul had with the yakuza's boss is that he was always locking horns with him over ideals they didn't share, and eventually Overhaul's mindset departed far away from what the Shie Hassaikai yakuza stand for and he started lashing out because he felt so undermined by a code he didn't stand for.
  • A Nazi by Any Other Name: His obsession with purging Quirks and returning humans back to the way they were and denouncing Quirks as sickness goes well past a yakuza mind frame and hits extremism that is right up there with eugenics and Nazism.
  • Nephewism: He's essentially the guardian of his adoptive niece, Eri, ever since his adoptive sister left her in the Shie Hassaikai's custody. Unfortunately, he's extremely abusive towards the girl.
  • Nice Job Fixing It, Villain: He explains how Eri's Quirk works to Midoriya in an attempt to get him to give up. Instead, Midoriya figures out how to use her Quirk to his advantage.
  • Not-So-Well-Intentioned Extremist: For all of his preaching about how Quirks have ruined society and how he intends to "cure" the world by removing Quirks, Overall's full scheme is to create Quirk destroying bullets and Quirk restoring bullets so that he can sell the cure to his own weapon and ensure an endless supply and money and power for the Yakuza.
  • One-Winged Angel: After breaking down Nemoto's body and fusing it with his own, he takes on a monstrous multi-armed appearance with a gaping beak formed from his mask. After Eri cancels the fusion with her Quirk, he does it again with Rikiya and the ground around him, taking on an even larger, more monstrous appearance that looks like a Kaiju made of flesh and stone with multiple limbs and Overhaul's upper body in place of Rikiya's tongue.
  • Personality Powers: Overhaul's Quirk perfectly mirrors his ambitions of controlling modern society through destruction and restoration of something that's part of people.
  • Pet the Dog: After beating the Reservoir Dogs, he cures them of their diseases and ailments when he could've just as easily killed them.
  • Pragmatic Villainy: Any good he does is for his own benefit. He doesn't want to kill people because he doesn't want to get blood on him, he showers Eri with gifts in order to buy her loyalty, takes in suicidal people to make them his meat shields, and he seems to only "cure" people of illness because of his mysophobia.
  • "Psycho" Strings: Particularly heavy in the scene where his experiments on Eri are fully revealed, with shots of him cutting open and rewinding flesh while more and more bandages appear on the poor girls arms.
  • Rank Scales with Asskicking: Overhaul is the second in command and acting leader of the Shie Hassaikai and also has the most powerful Quirk amongst the group.
  • "The Reason You Suck" Speech:
    • He makes sure that Shigaraki knows how little he thinks of the leader of the League of Villains since he still managed to lose even after garnering the help of first grade villains such as Stain, Muscular, and Moonfish.
    • He gives these to Eri a couple of times throughout the Internship Arc. They all amount to him claiming that her very existence is a curse and that it's her fault that so many people have been injured in their efforts to save her. Mirio and Midoriya obviously disagree, with the latter saying that the girl has a gentle and kind Quirk before their final battle.
    • He calls all heroes fake for not appreciating the glory of Eri's Quirk. It backfires when Midoriya gets pissed and kicks him into the sky. Afterwards, Midoriya totally fodderizes Overhaul in just a few minutes.
  • Sanity Slippage: Throughout his fight with Mirio and Midoriya, whatever was left of his cold, condescending behavior is sent down the drain as he begins to lose his mind raving on about Quirks being a disease and holding Eri as the key to curing humanity. By the time of his escape at Tartarus, Overhaul has lost what little sanity he had left due to being unable to heal his boss and has become unstable without his arms.
  • Scenery Censor: After Mr. Compress destroys the joint attaching his right arm to his body, the bloody stump and the broken bit of arm still lodged in his restraint are masked by a sound effects bubble in the manga, creating an impromptu Gory Discretion Shot.
  • Secondary Color Nemesis: As seen on his render above, he wears all of the three main secondary colors and is one of the series' vilest villains yet.
  • Shadow Archetype: To Sir Nighteye. Both were very stoic and calculating men who dedicated themselves to work as someone's right-hand man and had their characters centered around a big disagreement with their bosses about what was best for them, leading to both of them acting against their boss' will for their boss' sake.
  • Shirtless Scene: He's seen shirtless in Chronostasis' flashback in Chapter 159.
  • Shout-Out: The ability of his Quirk is identical (or almost identical) in effect to Josuke Higashikata's Stand, Crazy Diamond, including the power to fuse things or people together by disassembling both targets and then instantly reassembling them as a single being. However, unlike Josuke, he doesn't use it for any benevolent purposes.
  • Skewed Priorities: He's more concerned about his enemies touching him rather than attacking him, which is why he blew off Mr. Compress's arm.
  • Small Name, Big Ego: A dangerous individual, no doubt, but in a world where organized criminal groups like the yakuza are all but extinct, his reputation as a crime lord falls flat, yet he believes that he'll be the next Big Bad. Despite Overhaul himself admitting that the Shie Hassaikai are small-time and that the League of Villains have more recognition, he still has the nerve to try and position himself as their leader.
  • Smart People Play Chess: He and Shigaraki are depicted playing a game of shogi in one scene, with Overhaul using it as a metaphor to negotiate recruiting a few of Shigaraki's underlings. He winds up outplayed by Shigaraki in a more abstract game of chess, with Shigaraki using Toga and Twice to sabotage him and assist the heroes in taking him down.
  • Smug Snake: Overhaul constantly boasts about his plans to reform society and reassert the yakuza's position as supreme, and how much he can stand unopposed with his Quirk, to the level he becomes insufferable. Shigaraki and Mr. Compress hate Overhaul because of the fact he's arrogant and use this as their reason to exact payback on him for the loss of Magne and Mr. Compress's arm, which robs him of his ability to use his Quirk and pose as a threat anymore.
  • Squishy Wizard: His Quirk is very powerful and versatile, but his actual fighting skills are lacking. This is seen when a depowered Mirio still manages to give him a thorough beatdown and without his abilities, he's basically defenseless.
  • The Starscream: Heavily implied. There was a prior boss to the Hassaikai before him, of which he was an underling, but the Boss is now ill, with implications Overhaul is behind it, and he took over the organization to make it follow his own plans regarding the Quirk cancelling drug. Chronostasis and Overhaul scoff at the idea in private when trying to escape with Eri, suggesting it's more a rumor amongst the "loyal" underlings than true. The truth is actually more along the lines of Metaphorically True: Overhaul did cause the Boss's illness, but contrary to the "loyal" underlings' claim that it was for his own personal desires, he did it because he wanted to make sure the Boss wouldn't be able to stop him from using the Quirk canceling drugs to bring the yakuza back to power out of the desire to repay the Boss's kindness to him growing up. The Boss was against using Eri as Overhaul planned, so he was removed but kept alive so Overhaul could eventually show him the results and prove it was all Worth It.
  • The Strategist: He managed to formulate an ingenious Evil Plan for taking over the underworld and slowly develop a formidable organization right under the nose of the law. This is ultimately deconstructed as Overhaul's poor short-term decisions ultimately lead to the downfall of both himself and his organization.
  • Super Mob Boss: He's a superpowered crime lord with a group of dangerous lackeys capable of standing up to professional superheroes.
  • Superpower Lottery: Definitely one of the biggest winners of the Quirk lottery seen thus far, as his Quirk is unusually powerful and versatile compared to the vast majority of others. Killing with a single touch is nasty enough as it is, but it also comes with Healing Hands, allowing him to heal even otherwise fatal injuries in an instant. To make it worse, it also works on non-living matter, allowing him to warp the landscape, and it can even perform a Fusion Dance by disassembling/reassembling both his own and his minion's body. About the only Quirk shown capable of countering his is Eri's own, since she has the power to rewind things to their previous state and thus undo the effects, and even then it can only counter his Quirk's effects on living things. His Quirk is so powerful, in fact, that it allows him to pose a real threat to the legitimately super-powered Midoriya in spite of Chisaki otherwise being a normal human physically.
  • A Taste of Their Own Medicine: Early in his arc, he blows off Mr. Compress's left arm during his meeting with the League of Villains. Later, when the League of Villains have Overhaul at their mercy, Mr. Compress uses his powers to compress Overhaul's left arm, basically ripping it off his body. And then just to be even more sadistic, Shigaraki goes and decays the other away and severs it before his power kills Overhaul.
  • Tears of Remorse: Is shown crying while he begs to be taken back to the boss so he can apologize.
  • Terrified of Germs: This seems to be part of his motivation for erasing Quirks, and how he hates dirty things and being touched.
  • That Man Is Dead: He insists that he's abandoned the "Chisaki" identity, and gets angry when people call him that.
  • They Look Just Like Everyone Else!: In a series where most villains look Obviously Evil, he's got an eerily normal face underneath that mask. He's not especially handsome outside Generic Cuteness, and his short, spiky hair isn't especially distinctive - the only things that stand out are his Exhausted Eye Bags, and those wouldn't be out of place on a background character having a bad day. It throws his appalling deeds into much sharper relief.
  • Thousand-Yard Stare: As of the Tartarus jailbreak, this appears to be his default expression.
  • Too Dumb to Live: The first thing he does when contacting the League of Villains is to kill one of its members and make fun of its leader. After this, he expects them to just fall in line and help him. Instead, they predictably decide to get payback instead.
  • Too Many Mouths: After cannibalizing Nemoto, Overhaul now has Nemoto's mouth on one of his hands. It's a side-effect of his monstrous fusion and he's later revealed to have a normal mouth.
  • Toplessness from the Back: His Shirtless Scene is shown from the back.
  • Touch of Death: Has the ability to instantly disassemble (and reassemble) matter with his hands, which translates to causing people to explode with a single touch.
  • The Unmasking: Midoriya punches him so hard in the face that his mask comes off.
  • Ungrateful Bastard: Despite Midoriya saving him from Lady Nagant's bullet, though she wasn't actually trying to shoot him, he angrily calls Midoriya a "diseased maggot" and tells him to shut up simply because Midoriya tried to talk to him.
  • Unskilled, but Strong: He was the strongest foe Midoriya had faced in battle up to the conclusion of his arc, but it's entirely due to his ridiculously powerful Touch of Death and Healing Hands abilities. He otherwise doesn't seem to have any dedicated combat training and his usage of his powers really just boils down to lunging at his target in hopes of touching them or launching huge spikes at them. He also gets absolutely destroyed by both Mirio and Midoriya when they're able to turn things into a fist fight.
  • Useless Superpowers: His Quirk is reduced to this once Shigaraki and Mr. Compress leave him armless, as he can't use its powers without his arms.
  • Villain Has a Point:
    • Overhaul didn't put stock in the League of Villains because, from the look of things, they didn't have any solid plan to go about attacking Hero Society, while he did. Ironically, the League heeded his advice, realized his plan was effective, and they stole it for themselves, just to make him feel like shit.
    • He tells Midoriya that Eri's Quirk is dangerous and that she has no control over it. While that doesn't justify his treatment of her, he's right about this. It's shown in a flashback that Eri's Quirk killed her father, and after Midoriya defeats Overhaul, it nearly kills him before Aizawa stops it. It also implies that, beforehand, it is why he has his associates carry her in case her Quirk activates. When he carries her during a desperate escape, Eri uses Rewind out of instinct to leave herself open to Midoriya's rescue, cancelling Overhaul's fusion with another minion.
  • Villainous Breakdown: As the raid on the Shie Hassaikai's headquarters continued on, he began to lose his composure as his plan to escape unseen with Eri breaks down. His calm attitude begins to break once he realizes Mirio is much more skilled at fighting than him and continues to decline after that. He's unable to get out without numerous witnesses in the raid, he goes up against wave after wave of heroes, and Eri finally gains the willpower to escape from him. He's forced to sacrifice his own minions and demolishes several houses just to try and get Eri back, completely negating any remaining chance of getting away quietly, but at this point, he's little more than a raging animal clawing at any possibility of getting away with Eri. The breakdown is complete when Midoriya dominates Overhaul with overwhelming speed and strength, neutralizing his healing ability and crushes him. And just add further salt on the wound, the League of Villains steal his work and take his arms to render him Quirkless, leaving him to helplessly watch as they become the new overlords and he now has to live with the knowledge that his father figure will remain in the coma he put him in.
  • Voice of the Legion: His voice becomes a harmonized, chorused bellow when he undergoes his final fusion.
  • Well-Intentioned Extremist: He created his Evil Plan with the intention of saving the yakuza and repaying the Boss's kindness to him throughout his life. However, the Boss was appalled by the lengths Overhaul was willing to go to do it, specifically the torment Eri goes through with the process of harvesting her blood and cells for the Quirk canceling and restoring bullets and forbade it. Overhaul disagreed with that and decided that only he knew best about what the Boss would want, so he put the Boss on the life machine so he wouldn't be able to interfere with the operation. However, Overhaul genuinely believes what he's doing is in the Boss's best interests and that the Boss simply needs to see the plan come to fruition himself to understand that too. Although it's played with because he's trying to resurrect a criminal organization and elevate it to the level of supervillainy, which is only "well-intentioned" from a very specific point of view.
  • Wide Eyes and Shrunken Irises: His default mode, which adds to his creepiness.
  • The Worf Effect: Is subjected to this to give readers a tiny glimpse of just how strong future Midoriya would be if he were to fully master One For All.
  • Worthy Opponent: During his One-Winged Angel transformation, he acknowledges that Mirio is definitely stronger than he is.
  • Would Hit a Girl: Not only does he blow up Magne, a transgender woman, from the waist up, he's been torturing and abusing Eri for years.
  • Would Hurt a Child: He not only has been repeatedly taking Eri's blood in a very painful process but also callously tells Mirio that he has subjected her to mortal injury and used his Quirk to reassemble her at least once, to say nothing of the deliberate emotional torment he has forcibly inflicted on her throughout the years.
  • You Have Failed Me: Overhaul uses his Touch of Death on an underling who let Eri escape, shortly after their encounter with Midoriya and Mirio. Eri's new caretaker is understandably afraid that Overhaul will do the same to him. The rest of Overhaul's subordinates are willing to fight a hopeless battle against police and heroes knowing that he'll kill anyone who refuses.

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