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Introduced in Book 1
Katsuki Bakugou
Katsuki Bakugou
A brash and vulgar boy who believes highly of himself because of his hero potential. He is Izuku's childhood friend turned tormentor who also goes after Yuugi. His Quirk is Explosion.
- Adaptational Wimp: In canon, he was regarded as a formidable hero hopeful and rarely lost a fight, even to adult villains. In this story, he badly loses against people who know how to fight (Jounouchi) along with Mental Quirk users.
- The Bully: To Izuku. He also targets Yuugi since they always hang out together.
- Bullying the Disabled: He likes to hurt Izuku for being Quirkless and taunts Yuugi for being autistic.
- The Bus Came Back: In Book 2, he returns during the later half when the Yuuei-First Days Arc takes off.
- Dehumanizing Insult: He constantly calls Izuku "Deku" as a way of calling him useless for his lack of Quirk.
- Demoted to Extra: He isn't as involved in the story after Izuku befriends Yuugi who makes every effort to avoid him. It also helps that Inko transferred Izuku to a different class to stop the bullying and how Yami practically traumatized him with a Mind Crush attack. After the incident, he doesn't make any appearances for the rest of Book 1.
- Enemy Mine: In Book 2 Chapter 20, he and Jounouchi work together in keeping a concussed Kirishima safe during the Sports Festival Invasion.
- Foil: To Hirutani. Both of them were former friends to the main protagonists and are perfectly content with terrorizing them when given the opportunity (Bakugou with Izuku and Hirutani with Jounouchi). The main difference is that Hirutani still wants Jounouchi as a "friend" while Bakugou views Izuku as his personal punching bag. And while Hirutani uses delinquent stooges to fight Jounouchi for him, Bakugou prefers to be more direct in harming Izuku. Additionally, Hirutani dreams of making it big as a criminal leader while Bakugou dreams of being the next Number One Hero.
- Glass Cannon: He easily crumbles like paper after Jounouchi beats him up with two simple moves.
- Hair-Trigger Temper: It's very easy to make him lash out like a baby.
- Having a Blast: His Quirk involves making explosions from his hands.
- Hey, You!: He still gives people insulting nicknames. Such as Deku for Izuku, the r-word for Yuugi and Corgi ass for Jounouchi.
- Ignored Epiphany: In Book 2, he yells at Yuugi proclaiming that he isn't afraid of him in spite of what Yuugi and Yami did to him three years ago. He even gets mad at the boy for not being scared of him like before.
- Laser-Guided Karma: He is the first victim of Yami's Mind Crush attack which would have left him brain dead if he wasn't treated by expert empath doctors. Additionally, using his explosion Quirk to harm Izuku has resulted in him being cited for illegal Quirk usage which is now on his permanent record.
- Oh, Crap!: He gets a moment of shock when he realizes how Jounouchi learned to fight people with hand-related Quirks.
- Ordered Apology: After Bakugou voices a desire of learning how to fight from the street rat after losing to him twice, Jounouchi orders him to apologize to Izuku for the leg incident. And after the Sports Festival Invasion, he gives a short, vague apology to Izuku and also accepts Yuugi's warning of never getting another chance to hurt Izuku if he does anything like that again.
- Politically Incorrect "Hero": He purposefully calls Yuugi retarded whenever they meet.
- Sour Outside, Sad Inside: In spite of his hostile and aggressive personality, Yuugi could tell that he has some sadness to him given his reliance on so many mirrors in his Soul Room mixed with the fact that he had no authority figures to represent him during their Pre-Yuuei conference meeting.
- Spoiled Brat: Growing up in a society that valued him for his Quirk and kept him from facing consequences, Bakugou grew up as an egotist who believes everything should go his way and whines whenever he's beaten by someone superior than him.
- Starter Villain: The first main antagonist that Yuugi and Izuku have to deal with throughout their childhood.
- Unskilled, but Strong: As powerful as his explosions are, he actually fails when it comes to fighting with just his fists. And after losing to Jounouchi twice, Bakugou asks for his help to improve in that area.
- We Used to Be Friends: Was once Izuku's first best friend ever. But everything changed when Bakugou got his Quirk and began to hate Izuku for being Quirkless and for believing that the green child was looking down on him.
Chouno-Sensei
Chouno-Sensei
Yuugi's elementary school teacher with a haughty and condescending nature. Her Quirk is Facial Makeover.
- Bullying the Disabled: She purposefully targets Yuugi for actions that relate to his autism. Such as taking away his medically approved toys or chastising him for stimming in class.
- Didn't Think This Through: Apparently she never considered that marking Yuugi's test scores as incorrect could eventually be noticed by either his friends or Jii-chan which in turn would lead to her firing.
- Facial Horror: Her Quirk involves her face melting or changing shape whenever she gets agitated.
- Hoist by Her Own Petard: While antagonizing Yuugi, she showed blatant favoritism to class genius Tokage. It's through Tokage reviewing Yuugi's homework does Yuugi and Izuku realize that she's been failing him which would result in her firing.
- Jerkass to One: She enjoys tormenting Yuugi out of all of her students.
- Laser-Guided Karma: She's fired after she's exposed for purposefully failing Yuugi despite the boy answering the academic content correctly.
- Sadist Teacher: She constantly punishes Yuugi for petty or nonexistent reasons. From scolding him in front of the class, forcefully taking his stimming toys, to even failing him on purpose despite receiving excellent scores on his tests and homework.
- The Smurfette Principle: The only woman antagonist among the series' Rogues Gallery.
Hirutani
Hirutani
An amateur gang leader who was a former friend of Jounouchi. He has a cruel and sadistic nature as he's driven to bring back his friend regardless of his opinions. His Quirk is Unknown.
- Ain't Too Proud to Beg: Stain reveals that his last words were him begging to be spared.
- Arc Villain: He "replaces" Bakugou as the next main villain from Chapter 11 onwards.
- Contrasting Replacement Character: To Katsuki Bakugou. Both of them were former friends to the main protagonists and have no issue with inflicting violence on them. But while Bakugou has denounced Izuku as a friend and directly bullies him, Hirutani still desires Jounouchi's "friendship"/loyalty and sends armies of delinquents after him on his behalf. And while Bakugou is motivated to become a Pro Hero, Hirutani is driven to become an influential criminal leader.
- Crazy Jealous Guy: He is appalled when Jounouchi decides to cut ties with him and sends hordes of stooges to force him to rejoin his group.
- Evil Former Friend: Subverted with the evil part since he was always a delinquent. But he was this to Jounouchi before the blonde decided to move on with his life.
- Evil Is Not a Toy: He sought out the Hero Killer Stain and insisted that it would be a privilege for a murderer like him to join his ranks. Stain kills him and his remaining forces on the stop for thinking they could ever work side by side.
- Evil Mentor: Jounouchi briefly mentions that Hirutani taught him how to fight during his delinquent days.
Word of God also states that Hirutani taught him about criminal hierarchies along with the Legend of All For One. - The Ghost: He is only referenced by the boys but never makes an actual appearance in the story.
- If I Can't Have You…: Heavily implied. Hirutani's failed attempt at recruiting Stain to terrorize Yuugi and Jounouchi would suggest that he decided to kill his former childhood friend.
- Improbable Weapon User: He and his gang members use modified toys as weapons. Such as his iconic yo-yos and even fidget spinners.
- Non-Action Big Bad: Hirutani prefers to send his cronies to fight, or beat up, Jounouchi rather then confront him in person. Although it's implied that he has directly faced the Super Pal Trio off-screen.
- Self-Disposing Villain: He tries to hire Stain to go after Jounouchi and his friends. This resulted in the Hero Killer sending him to the Shadow Realm with his blades.
- Social Climber: His prime motivation is to establish himself as a criminal leader who's on par with the yakuza or major villains.
- Smug Snake: He prides himself as a rising crime leader who can influence anyone into following him. But Jounouchi knows that he's just a Paper Tiger as his followers and rivals are becoming aware of how weak he really is.
Sasorigumo
Sasorigumo
A shady shoe merchant that Hirutani has tried to recruit for his valuable expertise. His Quirk is Arachnid Manipulation.
- Adaptation Relationship Overhaul: He and Hirutani have something of an acquaintanceship in the story whereas they never interreacted in the manga.
- Bad People Abuse Animals: Yami can tell that he doesn't treat the arachnids he manipulates with the respect they deserve. Case in point with him keeping a scorpion in a shoe.
- Hidden Depths: Jounouchi reveals that he did countless jobs for multiple people and has a reputation as a valuable ally in the criminal circuit.
- Meaningful Name: His name is made of the Japanese translations for scorpion (sasori) and spider (gumo).
- Mind Rape: Another victim of Yami's Mind Crush attacks. Only this time, Yami made it so that he would be too traumatized to use his Arachnid Quirk ever again.
- Named In The Adaptation: He was nameless in the manga but was given the name Sasorigumo for this story.
- Pest Controller: His Quirk allows him to manipulate spiders and scorpions into attacking his enemies.
- What Happened to the Mouse?: It's never mentioned what became of him or if he's still involved in the criminal circuit after his traumatic encounter with Yami.
- You Owe Me: He agrees to target Yuugi if only to get a solid favor out of Hirutani.
Madara
Madara
A meddling middle school boy who constantly tries to get the Super Pal Trio in trouble during school hours. His Quirk is Unknown.
- Abhorrent Admirer: He becomes one to Jounouchi after the street rat tried to kiss him as a means of scaring him off. It ends up having an opposite effect as Madara tries to kiss him back.
- Loving Bully: Downplayed example. He's not really a bully but more of a nuisance but after Jounouchi kisses him, Madara shows romantic intention and isn't even bothered when the blonde punches him.
- Original Character: There's no word on whether he's a canon character from either series.
- Villainy-Free Villain: Compared to the rest of the Rogues Gallery, Madara is the most harmless foe who keeps trying to bust the boys for minor offenses.
Stain
Stain
A twisted hooligan who's made a reputation for himself as the infamous Hero Killer. Disgusted by the decay of modern society, he vows to slay anyone that he believes is contributing to the decay. His Quirk is Bloodcurdle.
- Adaptational Early Appearance: He makes his presence known before Izuku even enters UA.
- Black-and-White Insanity: He has extreme standards for those who are beneficial to society's morality and those who are a danger. Anyone who fits the latter is meant to be killed by his blades.
- Blood Magic: His Quirk allows him to paralyze any target if he ingests their blood.
- Climax Boss: He's the main villain that gains the most focus in the last chapters of Book 1.
- Death by Irony: His whole MO involves cleansing the metaphorical decay that's ruining Hero Society. He ends up dying after ingesting Yuugi's corrupted blood which destroyed his body from the inside.
- Emotion Bomb: He also has empathetic projection which allows him to paralyze others with fear. Word of God admittedly gave him this power based on the canon scene where the heroes were paralyzed by his intense mood.
- Hoist by His Own Petard: His habit of drinking his target's blood would cost him his life as he ingests Yuugi's contaminated blood which kills him from the inside.
- A Mind Is a Terrible Thing to Read: Based on Nagare's account, Stain's mindscape is considered so dark and disgusting that it makes him literally vomit after entering it.
- Not-So-Well-Intentioned Extremist: He views himself as the solution to cure the decay and corruption of modern hero society. And he does so by promoting his exaggerated standards of heroism and killing anyone who doesn't fit them, whether they're a civilian, hero or wannabe villain.
- Psycho Knife Nut: A serial killer who wields carries an arsenal of swords and knives.
- Undignified Death: Stain is killed after receiving scratch wounds from Kuriboh which results in a fatal allergic reaction. Book 2, however, reveals that his true cause of death was ingesting Yuugi's overreactive blood which destroyed him from the inside.
- Would Hurt a Child: He has no issue using violence against Yuugi and Jounouchi for getting in his way. He even targeted Seto Kaiba who was only fourteen years old but is the CEO of KaibaCorp.
Introduced in Book 2
The Eight Precepts of Death
The Eight Precepts of Death
A sinister yakuza group with the intention of revolutionizing modern society using controversial means.
- Abusive Parents: Overhaul kept Eri prisoner in his mansion and treated her as a tool to create his Anti-Quirk bullets.
- An Arm and a Leg: Overhaul loses both his arms after failing to escape Shigaraki's Nomu.
- Barrier Warrior: Tengai's Quirk allows him to create defensive barriers.
- Brains and Brawn: Tengai and Rappa are paired up to support one another, essentially acting as the "Shield and Spear".
- The Brute: Rappa is the strong man who relies on needless violence when in combat.
- Death by Adaptation: Shin Nemoto is killed by one of the Yuuki members during the new Yakuza Raid while Soramitsu Tabe and Chronostasis are disintegrated by Shigaraki a few days later.
- How the Mighty Have Fallen: Following Eri's escape and Mako revealing about their Anti-Quirk plan, Overhaul and his men are immediately captured and their equipment confiscated by the authorities. It gets worse when Shigaraki and Dabi break him out of prison if only to have him formally meet All For One while losing his arms in the process.
- Hypocrite: Overhaul is all for eradicating Quirks while declaring that they're a pox on society but he and his group should still be allowed to keep their respective Quirks.
- Plague Doctor: Each member wears a bird shaped mask that Yuugi considers to be tacky. And Mako reveals that they're still planning on eliminating Quirks through their special bullets.
- The Rival: Constantly butt heads with the Meta Liberation Army and Tsunako's yakuza division.
- Touch of Death: Overhaul's Quirk allows him to disassemble anything he touches. Though he can reassemble them if needed.
- The Unfought: Played With. Yuugi and his friends don't directly fight them. But after he finds Eri along with Izuku and Aizawa, a hero team is sent to apprehend them a few days later.
- Would Hurt a Child: They're all complacent with Eri's abuse and experimentation to further their agenda.
The Big 5
The Big 5
A legion of greedy and arrogant businessmen who were crucial in securing Seto's takeover of KaibaCorp. Unsatisfied with their current position, they have decided to form their own plans to take down the Kaiba siblings. Their Quirks are unknown.
- Chronic Backstabbing Disorder: They were convinced by Seto to betray their former boss Gozaburo by transferring their shares to the Child Prodigy. But now they want the corporation for themselves and are doing everything in their power to eliminate Seto.
- Disproportionate Retribution: Otaki, the penguin loving accountant of the group, has attempted to fire Gang Orca from KaibaCorp's Support division eight times due to orcas being the natural predators of penguins.
- Evil Old Folks: All 5 members are middle-aged but Oshita (the freaky fish guy) stands out as the oldest among them.
- Fantastic Racism: They don't have a favorable opinion over Pro Heroes with Mutant Quirks.
- Non-Action Big Bad: Given their status as high ranking businessmen, they won't be involved in directly fighting the heroes to further their agenda.
- Put on a Bus: Thanks to their kidnapping scheme backfiring along with Pegasus losing his half of Industrial Illusions, the Big 5 have no further influence in KaibaCorp and are kicked to the curb.
- Wounded Gazelle Gambit: Oshita gains a hip injury and needed to be taken to the hospital. It was a ploy to draw everyone's attention so no one would notice Mokuba being abducted.
Pegasus J. Crawford
Pegasus J. Crawford
The dramatic and flamboyant president of the support company Industrial Illusions. In truth, he's a sinister man who's teamed up with the Big 5 to takeover KaibaCorp. His Quirk is Telepathy.
- Adaptational Wimp: In the original series, his mind-reading abilities made him a significant danger to Yuugi and Kaiba. In this story, while he still retains mind-reading as a Quirk, it's hardly effective on the people he uses it against.
- Berserk Button: He doesn't take kindly to people speaking ill of his departed wife Cecelia.
- Beware the Mind Reader: His Quirk involves mind reading as he attempts this on Yuugi and Seto. Thankfully, Yami intervenes and keeps him from invading his privacy. As for Seto, his lizard companions serve as an unofficial barrier that keeps him from having his mind read.
- Corrupt Corporate Executive: An influential owner of a support company that has a tight grip on spider silk, a special material utilized in hero outfits and accessories. He's also not against using deception and underhanded tactics to take ownership of any corporation of interest.
- Darwinist Desire: He's been collaborating with Dr. Aknadin to create a surrogate heir that takes after him and his dead wife.
- Disproportionate Retribution: Bandit Keith insulted his dead wife on a Minecraft livestream, so Pegasus retorted by having his company blacklisted and unable to obtain spider silk.
- Eye Scream: He's struck in his left eye by a metal rod sent by Wolfram.
- The Friend Nobody Likes: Despite being the president of Industrial Illusions, nobody on I-Island enjoys having him around.
- The Gadfly: He has a habit of provoking others to lose control which he finds to be entertaining.
- Good Scars, Evil Scars: Instead of a Millennium Eye, he now has exophthalmos which resulted in gaining surgical scars where his left eye is.
- Laser-Guided Karma: His efforts to sabotage Kaiba's company with his nefarious schemes result in him being exposed for his crimes and having to give up his half of the company's shares to the boys.
- Non-Action Big Bad: Much like the Big 5, he'd rather have his cronies attack the Kaiba boys and their associates as to avoid tarnishing his reputation.
- Politically Incorrect Villain: He casually calls Yuugi a "savant" which he takes offense to.
- Terms of Endangerment: Still uses the suffix "-boy" when addressing Yuugi and Seto.
- Villain Team-Up: Along with hiring Wolfram as his bodyguard, he's also in league with Aknadin Yuuki.
- We ARE Struggling Together: His carefree antics and refusal to play things safe results in Wolfram turning his back on him followed by Dr. Aknadin chewing him out for his losses.
Wolfram
Wolfram
A hulking, twisted brawler serving as Pegasus' right hand stooge. His Quirk is Metal Manipulation.
- Addiction-Powered: He steals some of Dr. Aknadin's Quirk enhancement drugs to give him a power boost as he attacks I-Island.
- Beyond Redemption: While inside his Soul Room and seeing how corrupt and twisted it is, Yami somberly remarks that it isn't possible to repair his room or salvage the metal hooligan.
- The Brute: Tends to beat people senseless if his boss commands him to.
- Climax Boss: He usurps Pegasus' position as the main villain of the I-Island Expo Arc.
- De-power: Thanks to Yuugi erasing one of the corrupt doors in his Soul Room, Wolfram becomes weaker in battle and loses control over his Quirks.
- Death of Personality: Yuugi can tell that something happened to his Soul Room which led to a deadly change in personality.
- Delayed Explosion: His second Quirk allows him to turn anything he touches into a flammable explosion.
- Double Reverse Quadruple Agent: Along with working as Pegasus' bodyguard, he's also working with Abrahams, one of David Shield's scientists, to steal some valuable drugs and All For One given that he received his Energy Conversion Quirk from him. It's also implied that he has some type of contract with Bakura.
- Extra-ore-dinary: His Quirk allows him to manipulate metal of all kinds into weapons to fight or kill people.
- Get Out!: He says this to Pegasus when he tries to read his mind.
- Karmic Death: His usage of Quirk enhancement drugs results in his body being trapped in a critical condition where he can very well die if he remains in a coma.
- Malevolent Masked Men: He wears a twisted metallic mask and works under Pegasus.
- Person of Mass Destruction: Wolfram goes absolutely ballistic on the streets of I-Island after he's exposed for his thefts.
- Playing with Fire: He's revealed to have an Energy Conversion Quirk which can create fire from anything he touches. He eagerly uses it to roast anyone, whether enemy or underling.
- Praetorian Guard: An exceptionally powerful bodyguard working for one of the most influential men in the Support Industry.
- Sour Outside, Sad Inside: Yugi and Yami encounter another pitiable man inside his Soul Room that was connected to his Second Quirk.
- The Starscream: He ends up betraying both Pegasus and Abrahams so he can get his hands on some powerful Quirk enhancement drugs.
- Would Hurt a Child: He oversees Mokuba's kidnapping and later tries to kill him and the I-Island Trio.
Mako and Insector Haga
Mako and Insector Haga
Two young lads who are associated with the Meta Liberation Army. Mako is a friendly, eager young man with the appearance of a shark while his compatriot Insector is more sadistic and hostile. Their respective Quirks are Shark and Arthropod Manipulation.
- Adaptational Species Change: In his original series, Ryuta was a human boy. In here, he's now a shark boy.
- Adaptational Villainy: Played With. Mako is in league with the MLA and has embraced their ideologies. However, he's also working directly with Aizawa by giving him information to support his cases.
- Affably Evil: In spite of his allegiance to a terrorist organization, Mako is presented as a boisterous young man who offers sincere friendliness to anyone he meets. Provided that you aren't yakuza.
- Age Lift: Insector is described as being a few years older than Yuugi, unlike being the same age as him in canon.
- Bad Liar: Mako is not one for lying on the spot.
- Berserk Button: He also does not take kindly to being called a "freaky fish guy".
- Double Agent: Mako is revealed to be Aizawa's informant and spills any tea he finds relating to criminal groups of interest.
- Evil Duo: Are introduced together while antagonizing Yuugi and friends.
- Four Eyes, Zero Soul: Haga still has his thick glasses and takes exceptional pleasure in sending his insect horde to attack his foes.
- Hidden Depths: Word of God describes Mako has having very poor self-esteem and naively joined the Meta Liberation Army under the belief that they can help him with accepting his identity as a Shark Man.
- I'm Having Soul Pains: According to Ishizu, Insector can still feel the same pain as his insect minions.
- Pest Controller: Befitting his deck motif, Insector is able to control bugs to do his bidding. He even brought poisonous mukade (centipedes) during his chapter debut to attack the yakuza and local heroes.
- Put on a Bus: Mako mentions that Insector was put on another assignment after his recent course of shameful actions.
- Shark Man: Mako is designed to look like a giant shark.
- Spiky Hair: It's mentioned that Mako still has his purple, urchin-like hair from the show. It also has a bonus feature of emitting spikes at his enemies when agitated.
- Your Terrorists Are Our Freedom Fighters: Both of them are in league with the Meta Liberation Army who yearn for eternal Quirk usage.
The League of Villains Chapter 16 SPOILERS
A rising group of evil-doers with the intention of destroying hero society and ushering in a new era where villains reign supreme.
Shigaraki Tomura
An irritable and violent young man who seeks to destroy hero society in the name of his master. His Quirk is Decay.
- The Apprentice: Despite being the head honcho of LOV, he mentions that he has a Sensei he serves under.
- Bad Guys Do the Dirty Work: He resorts to disintegrating two of Shigaraki's cronies after breaking them out of prison.
- Glass Cannon: Despite having an incredibly dangerous Quirk, Jounouchi manages to knock him out and break his arms in less than a minute.
- In the Hood: He's introduced wearing a hoodie.
- The Leader: The acting leader of the League of Villains.
- Stupid Evil: As Dabi points out, his last base was doxxed and targeted because he was holding a livestream gaming session.
- Touch of Death: His Quirk allows him to disintegrate anything he touches.
- We ARE Struggling Together: He often has difficulty getting Dabi to follow his will.
Dabi
A gothic hooligan who loves to get under people's skin. His Quirk is Cremation.
- Goth: He has the wardrobe, piercings and grim demeanor of a goth guy. Yuugi even describes him as such after getting a glimpse of him.
- Hero Killer: It's mentioned that several of Endeavor's sidekicks were killed while he and Shigaraki broke Overhaul out of jail. And given that he called dibs on Endeavor's stooges, it's all but stated that he was the one who sent them to the Shadow Realm.
- It's Personal: For reasons "unclear", he called dibs on executing Endeavor's sidekicks.
- Technicolor Fire: His flames are bright blue which Yuugi notes is incredibly rare for a person to have.
- We ARE Struggling Together: Often butts heads with Shigaraki and isn't afraid to point out his failures as a villain. He even calls him a "crusty NEET".
Kurogiri
A well-mannered servant with a ghostly appearance. His Quirk is Warp Gate.
- Beleaguered Assistant: Gets no respect from his young master.
- Only Sane Man: He tries to keep Shigaraki and Dabi in check while completing their mission.
- Thinking Up Portals: His Quirk allows him to create portals that he and his associates use to travel.
Sawada Chaco
Sawada Chaco
A low level villain who went missing for a few months but plays a crucial role in the second half of Book 2. His Quirk is Energy Conversion.
- Delayed Explosion: His Quirk allows him to convert energy into a destructive explosion.
- Posthumous Character: The real Sawada disappeared at some point and perished after having his Quirk stolen by All For One. Only now he exists as a vestige.
- Small Role, Big Impact: Yuugi encounters Sawada's vestige when he enters Wolfram's Soul Room. It's through this encounter along with confirmation from the First Ones that confirms to Yuugi that All For One still exists and must be stopped.
- Team Member in the Adaptation: Despite being an Original Character, he ends up working alongside the Past Holders of One For All after Yuugi unintentionally transferred his vestige into their realm. As of now, he's become part of their world and Izuku has access to his Quirk.
