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Two young lads who are associated with the [[SuperSupremacist 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'''.

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Two young lads who are associated with the [[SuperSupremacist [[YourTerroristsAreOurFreedomFighters 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'''.



* SuperSupremacist: Both of them are in league with the Meta Liberation Army.

to:

* SuperSupremacist: SpikyHair: It's mentioned that Mako still has his purple, urchin-like hair from the show. [[spoiler:It also has a bonus feature of emitting spikes at his enemies when agitated]].
* YourTerroristsAreOurFreedomFighters:
Both of them are in league with the Meta Liberation Army.Army who yearn for eternal Quirk usage.

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* MustMakeAmends: [[spoiler:He begrudgingly apologizes to Izuku for hurting him in school along with blowing up his leg. He even accepts Yuugi's warning of how [[ImpliedDeathThreat he'll never get a second chance to harm Izuku if he does hurt him again]]. Though the two friends know that he's only apologizing just so Jounouchi can train him]].


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* OrderedApology: [[spoiler: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 [[ImpliedDeathThreat never getting another chance to hurt Izuku if he does anything like that again]]]].

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!!The Eight Precepts of Death




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!!The Big 5



* VillainTeamUp: Along with hiring Wolfram as his bodyguard, he's also in league with [[spoiler:Aknadin Yuuki]].
* WeAreStrugglingTogether: [[spoiler: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]].




to:

!!Mako and Insector Haga

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* TheBusCameBack: In Book 2, he returns during the later half when the ''Yuuei-First Year'' Arc takes off.

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* TheBusCameBack: In Book 2, he returns during the later half when the ''Yuuei-First Year'' Days'' Arc takes off.



* EnemyMine: In Book 2 Chapter 20, [[spoiler:he and Jounouchi work together in keeping Kirishima safe during the attack at the Sports Festival]].

to:

* EnemyMine: In Book 2 Chapter 20, [[spoiler:he and Jounouchi work together in keeping a concussed Kirishima safe during the attack at the Sports Festival]].Festival Invasion]].



* MustMakeAmends: [[spoiler:He begrudingly apologizes to Izuku for hurting him in school along with blowing up his leg. He even accepts Yuugi's warning of how [[ImpliedDeathThreat he'll never get a second chance to harm Izuku if he does hurt him again]]. Though the two friends know that he's only apologizing just so Jounouchi can train him]].

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* MustMakeAmends: [[spoiler:He begrudingly begrudgingly apologizes to Izuku for hurting him in school along with blowing up his leg. He even accepts Yuugi's warning of how [[ImpliedDeathThreat he'll never get a second chance to harm Izuku if he does hurt him again]]. Though the two friends know that he's only apologizing just so Jounouchi can train him]].



* ArcVillain: He "replaces" Bakugou as the next main villain from Chapter 11 onwards.



* NonActionBigBad: Hirutani prefers to send his cronies to fight, or beat up, Jounouchi rather then appear in person. Although it's implied that he has directly faced the Super Pal Trio off-screen.

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* NonActionBigBad: Hirutani prefers to send his cronies to fight, or beat up, Jounouchi rather then appear confront him in person. Although it's implied that he has directly faced the Super Pal Trio off-screen.


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* AdaptationRelationshipOverhaul: He and Hirutani have something of an acquaintanceship in the story whereas they never interreacted in the manga.


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* WhatHappenedToTheMouse: [[spoiler:It's never mentioned what became of him or if he's still involved in the criminal circuit after his traumatic encounter with Yami]].

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* AdaptationalWimp: 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 [[spoiler:know how to fight (Jounouchi)]] along with [[spoiler:Mental Quirk users]].



* EnemyMine: In Book 2 Chapter 20, [[spoiler:he and Jounouchi work together in keeping Kirishima safe during the attack at the Sports Festival]].



* GlassCannon:
** He easily crumbles like paper after [[spoiler:Jounouchi beats him up with two simple moves]].
** He also doesn't fare well against users with Mental Quirks.

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* GlassCannon:
**
GlassCannon: He easily crumbles like paper after [[spoiler:Jounouchi beats him up with two simple moves]].
** He also doesn't fare well against users with Mental Quirks.* HairTriggerTemper: It's very easy to make him lash out like a baby.



* MustMakeAmends: [[spoiler:He begrudingly apologizes to Izuku for hurting him in school along with blowing up his leg. He even accepts Yuugi's warning of never hurting him afterwards. Though Izuku and Yuugi know that he's only apologizing just so Jounouchi can train him]].

to:

* MustMakeAmends: [[spoiler:He begrudingly apologizes to Izuku for hurting him in school along with blowing up his leg. He even accepts Yuugi's warning of how [[ImpliedDeathThreat he'll never hurting get a second chance to harm Izuku if he does hurt him afterwards. again]]. Though Izuku and Yuugi the two friends know that he's only apologizing just so Jounouchi can train him]].him]].
* OhCrap: He gets a moment of shock when he realizes [[spoiler:how Jounouchi learned to fight people with hand-related Quirks]].



* SpoiledBrat: 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. Along with yelling at [[spoiler:Yuugi for not being afraid of him]] despite what he was capable of, he accuses [[spoiler:Rishid]] of ''cheating'' by using his [[spoiler:Empathy Quirk]].

to:

* SpoiledBrat: 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. Along with yelling at [[spoiler:Yuugi for not being afraid of him]] despite what he was capable of, he accuses [[spoiler:Rishid]] of ''cheating'' way and whines whenever he's beaten by using his [[spoiler:Empathy Quirk]]. someone superior than him.


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* HoistByHerOwnPetard: While antagonizing Yuugi, she showed blatant favoritism to class genius Tokage. [[spoiler: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]].

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* GlassCannon: He easily crumbles like paper after [[spoiler:Jounouchi beats him up with two simple moves]].

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* GlassCannon: GlassCannon:
**
He easily crumbles like paper after [[spoiler:Jounouchi beats him up with two simple moves]].moves]].
** He also doesn't fare well against users with Mental Quirks.



* MustMakeAmends: [[spoiler:He begrudingly apologizes to Izuku for hurting him in school along with blowing up his leg. He even accepts Yuugi's warning of never hurting him afterwards. Though Izuku and Yuugi know that he's only apologizing so Jounouchi can train him]].

to:

* MustMakeAmends: [[spoiler:He begrudingly apologizes to Izuku for hurting him in school along with blowing up his leg. He even accepts Yuugi's warning of never hurting him afterwards. Though Izuku and Yuugi know that he's only apologizing just so Jounouchi can train him]].

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A low level villain who went missing for a few months but plays a crucial role.

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A low level villain who went missing for a few months but plays a crucial role.role in the second half of Book 2. His Quirk is '''Energy Conversion'''.


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* DelayedExplosion: His Quirk allows him to convert energy into a destructive explosion.
* PosthumousCharacter: The real Sawada disappeared at some point and perished after having his Quirk stolen by All For One. [[spoiler:Only now he exists as a vestige]].
* SmallRoleBigImpact: [[spoiler: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]].
* TeamMemberInTheAdaptation: Despite being an OriginalCharacter, he ends up working alongside [[spoiler: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]].
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* MustMakeAmends: [[spoiler:He begrudingly apologizes to Izuku for hurting him in school along with blowing up his leg. He even accepts Yuugi's warning of never hurting him afterwards. Though Izuku and Yuugi know that he's only apologizing so Jounouchi can train him]].


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* SpoiledBrat: 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. Along with yelling at [[spoiler:Yuugi for not being afraid of him]] despite what he was capable of, he accuses [[spoiler:Rishid]] of ''cheating'' by using his [[spoiler:Empathy Quirk]].


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* GlassCannon: Despite having an incredibly dangerous Quirk, [[spoiler:Jounouchi manages to knock him out and break his arms in less than a minute]].


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[[folder:Sawada Chaco]]
!!Sawada Chaco

A low level villain who went missing for a few months but plays a crucial role.
----
[[/folder]]

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* TheBusCameBack: In Book 2, [[spoiler:Jounouchi spots him taking the Entrance Exam and later Yuugi has to meet with him via Hero Commission to discuss their pasts involving illegal Quirk usage]].

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* TheBusCameBack: In Book 2, [[spoiler:Jounouchi spots him taking he returns during the Entrance Exam and later Yuugi has to meet with him via Hero Commission to discuss their pasts involving illegal Quirk usage]].half when the ''Yuuei-First Year'' Arc takes off.


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* HeyYou: He still gives people insulting nicknames. Such as Deku for Izuku, the r-word for Yuugi and [[spoiler:Corgi ass]] for Jounouchi.


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* UnskilledButStrong: As powerful as his explosions are, he actually fails when it comes to fighting with just his fists. [[spoiler:And after losing to Jounouchi twice, Bakugou asks for his help to improve in that area]].

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[[folder:The League of Villains '''Book 2 SPOILERS''']]

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[[folder:The League of Villains '''Book 2 '''Chapter 16 SPOILERS''']]



* TheApprentice: Despite being the head honcho of LOV, he mentions that he has a ''Sensei'' he serves under.



* HeroKiller: [[spoiler: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]].



* BeleaguredAssistant: Gets no respect from his young master.

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* BeleaguredAssistant: BeleagueredAssistant: Gets no respect from his young master.

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* TheCameo: In Book 2, [[spoiler:Jounouchi spots him taking the Entrance Exam]].

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* TheCameo: TheBusCameBack: In Book 2, [[spoiler:Jounouchi spots him taking the Entrance Exam]].Exam and later Yuugi has to meet with him via Hero Commission to discuss their pasts involving illegal Quirk usage]].



* IgnoredEpiphany: In Book 2, [[spoiler: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]].

to:

* IgnoredEpiphany: In Book 2, [[spoiler: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]].ago. He even gets mad at the boy for not being scared of him like before]].



* SourOutsideSadInside: In spite of his hostile and aggressive personality, [[spoiler: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]].



* ContrastingReplacementCharacter: 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.



* EvilMentor: Jounouchi briefly mentions how Hirutani taught him how to fight during his delinquent days. WordOfGod also states that Hirutani taught him about criminal hierarchies along with [[spoiler:the Legend of All For One]].
* {{Foil}}: 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.

to:

* EvilIsNotAToy: [[spoiler: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]].
* EvilMentor: Jounouchi briefly mentions how that Hirutani taught him how to fight during his delinquent days. WordOfGod also states that Hirutani taught him about criminal hierarchies along with [[spoiler:the Legend of All For One]].
* {{Foil}}: 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.
One]].



* AdaptationalWimp: In the original series, his mind-reading abilities made him a significant danger to Yugi 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.

to:

* AdaptationalWimp: In the original series, his mind-reading abilities made him a significant danger to Yugi 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.



* BewareTheMindReader: His Quirk involves mind reading as he attempts this on [[spoiler: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]].

to:

* BewareTheMindReader: His Quirk involves mind reading as he attempts this on [[spoiler:Yuugi Yuugi and Seto. Thankfully, [[spoiler: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]].

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to:

!!Katsuki Bakugou



* IgnoredEpiphany: In Book 2, [[spoiler: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]].




to:

!!Madara

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* DidntThinkThisThrough: [[spoiler: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]].



* EvilMentor: Jounouchi briefly mentions how Hirutani taught him how to fight during his delinquent days.

to:

* EvilMentor: Jounouchi briefly mentions how Hirutani taught him how to fight during his delinquent days. WordOfGod also states that Hirutani taught him about criminal hierarchies along with [[spoiler:the Legend of All For One]].



An irritable and violent young man who seeks to destroy hero society in the name of his master. His Quirk is '''Decay'''

to:

An irritable and violent young man who seeks to destroy hero society in the name of his master. His Quirk is '''Decay''''''Decay'''.



* InTheHood: He's introduced wearing a hoodie.



A well-mannered servant with a ghostly appearance. His Quirk is '''Warp Gate'''

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A well-mannered servant with a ghostly appearance. His Quirk is '''Warp Gate'''Gate'''.


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* BeleaguredAssistant: Gets no respect from his young master.
* OnlySaneMan: He tries to keep Shigaraki and Dabi in check while completing their mission.

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[[folder:The League of Villains]]

A rising group of villains with the intention of destroying hero society and ushering in a new era where villains reign supreme.

to:

[[folder:The League of Villains]]

Villains '''Book 2 SPOILERS''']]

A rising group of villains evil-doers with the intention of destroying hero society and ushering in a new era where villains reign supreme.


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!!Shigaraki Tomura

An irritable and violent young man who seeks to destroy hero society in the name of his master. His Quirk is '''Decay'''
----
* BadGuysDoTheDirtyWork: He resorts to disintegrating two of Shigaraki's cronies after breaking them out of prison.
* TheLeader: The acting leader of the League of Villains.
* StupidEvil: As Dabi points out, his last base was doxxed and targeted because he was holding a livestream gaming session.
* TouchOfDeath: His Quirk allows him to disintegrate anything he touches.
* WeAreStrugglingTogether: 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.
* ItsPersonal: For reasons "unclear", he called dibs on executing Endeavor's sidekicks.
* TechnicolorFire: His flames are bright blue which Yuugi notes is incredibly rare for a person to have.
* WeAreStrugglingTogether: 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'''
----
* ThinkingUpPortals: His Quirk allows him to create portals that he and his associates use to travel.
----

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* BadMenAbuseAnimals: 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.

to:

* BadMenAbuseAnimals: BadPeopleAbuseAnimals: 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.shoe.
* HiddenDepths: Jounouchi reveals that he did countless jobs for multiple people and has a reputation as a valuable ally in the criminal circuit.



* PestController: His Quirk allows him to manipulate spiders and scorpions into attacking his enemies.



[[folder: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'''.

to:

[[folder:Stain]]
!!Stain

[[folder:Madara]]

A twisted hooligan who's made a reputation for himself as meddling middle school boy who constantly tries to get the infamous Hero Killer. Disgusted by the decay of modern society, he vows to slay anyone that he believes is contributing to the decay. Super Pal Trio in trouble during school hours. His Quirk is '''Bloodcurdle'''.Unknown.


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* AbhorrentAdmirer: He becomes one to [[spoiler:''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]].
* LovingBully: Downplayed example. He's not really a bully but more of a nuisance but after [[spoiler:Jounouchi kisses him, Madara shows romantic intention and isn't even bothered when the blonde punches him]].
* OriginalCharacter: There's no word on whether he's a canon character from either series.
* VillainyFreeVillain: Compared to the rest of the RoguesGallery, Madara is the most harmless foe who keeps trying to bust the boys for minor offenses.
[[/folder]]

[[folder: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'''.
----


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[[folder:The League of Villains]]

A rising group of villains with the intention of destroying hero society and ushering in a new era where villains reign supreme.
----
[[/folder]]

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[[folder: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'''.

to:

[[folder:Stain]]
!!Stain

[[folder:Sasorigumo]]
!!Sasorigumo

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 shady shoe merchant that he believes is contributing Hirutani has tried to the decay. recruit for his valuable expertise. His Quirk is '''Bloodcurdle'''.'''Arachnid Manipulation'''.


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* BadMenAbuseAnimals: 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.
* MeaningfulName: His name is made of the Japanese translations for scorpion (sasori) and spider (gumo).
* MindRape: Another victim of Yami's Mind Crush attacks. Only this time, [[spoiler:Yami made it so that he would be too traumatized to use his Arachnid Quirk ever again]].
* NamedInTheAdaptation: He was nameless in the manga but was given the name Sasorigumo for this story.
* YouOweMe: He agrees to target Yuugi if only to get a solid favor out of Hirutani.
[[/folder]]

[[folder: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'''.
----
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[[foldercontrol]]
!!Introduced in Book 1
[[folder: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'''.
----
* TheBully: To Izuku. He also targets Yuugi since they always hang out together.
* BullyingTheDisabled: He likes to hurt Izuku for being Quirkless and taunts Yuugi for being autistic.
* TheCameo: In Book 2, [[spoiler:Jounouchi spots him taking the Entrance Exam]].
* DehumanizingInsult: He constantly calls Izuku "Deku" as a way of calling him useless for his lack of Quirk.
* DemotedToExtra: 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 [[spoiler:Yami practically traumatized him with a Mind Crush attack. After the incident, he doesn't make any appearances for the rest of Book 1]].
* {{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.
* GlassCannon: He easily crumbles like paper after [[spoiler:Jounouchi beats him up with two simple moves]].
* HavingABlast: His Quirk involves making explosions from his hands.
* LaserGuidedKarma: [[spoiler: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]].
* [[PoliticallyIncorrectHero Politically Incorrect "Hero"]]: He purposefully calls Yuugi ''retarded'' whenever they meet.
* StarterVillain: The first main antagonist that Yuugi and Izuku have to deal with throughout their childhood.
* WeUsedToBeFriends: 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.
[[/folder]]

[[folder:Chouno-Sensei]]
!!Chouno-Sensei

Yuugi's elementary school teacher with a haughty and condescending nature. Her Quirk is '''Facial Makeover'''.
----
* BullyingTheDisabled: 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.
* FacialHorror: Her Quirk involves her face melting or changing shape whenever she gets agitated.
* JerkassToOne: She enjoys tormenting Yuugi out of all of her students.
* LaserGuidedKarma: [[spoiler:She's fired after she's exposed for purposefully failing Yuugi despite the boy answering the academic content correctly]].
* SadistTeacher: She constantly punishes Yuugi for petty or nonexistent reasons. From scolding him in front of the class, forcefully taking his stimming toys, to even [[spoiler:failing him on purpose despite receiving excellent scores on his tests and homework]].
* TheSmurfettePrinciple: The only woman antagonist among the series' RoguesGallery.
[[/folder]]

[[folder: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.
----
* AintTooProudToBeg: [[spoiler:Stain reveals that his last words were him begging to be spared]].
* CrazyJealousGuy: He is appalled when Jounouchi decides to cut ties with him and sends hordes of stooges to force him to rejoin his group.
* EvilFormerFriend: 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.
* EvilMentor: Jounouchi briefly mentions how Hirutani taught him how to fight during his delinquent days.
* {{Foil}}: 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.
* TheGhost: He is only referenced by the boys but never makes an actual appearance in the story.
* IfICantHaveYou: Heavily implied. [[spoiler:Hirutani's failed attempt at recruiting Stain to terrorize Yuugi and Jounouchi would suggest that he decided to kill his former childhood friend]].
* ImprobableWeaponUser: He and his gang members use modified toys as weapons. Such as his iconic yo-yos and even fidget spinners.
* NonActionBigBad: Hirutani prefers to send his cronies to fight, or beat up, Jounouchi rather then appear in person. Although it's implied that he has directly faced the Super Pal Trio off-screen.
* SelfDisposingVillain: [[spoiler:He tries to hire Stain to go after Jounouchi and his friends. This resulted in the HeroKiller sending him to the Shadow Realm with his blades]].
* SocialClimber: His prime motivation is to establish himself as a criminal leader who's on par with the yakuza or major villains.
* SmugSnake: He prides himself as a rising crime leader who can influence anyone into following him. But Jounouchi knows that he's just a PaperTiger as his followers and rivals are becoming aware of how weak he really is.
[[/folder]]

[[folder: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'''.
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* AdaptationalEarlyAppearance: He makes his presence known before Izuku even enters UA.
* BlackAndWhiteInsanity: 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.
* BloodMagic: His Quirk allows him to paralyze any target if he ingests their blood.
* ClimaxBoss: He's the main villain that gains the most focus in the last chapters of Book 1.
* DeathByIrony: His whole [=MO=] involves cleansing the metaphorical decay that's ruining Hero Society. [[spoiler:He ends up dying after ingesting Yuugi's corrupted blood which destroyed his body from the inside]].
* EmotionBomb: He also has empathetic projection which allows him to paralyze others with fear. WordOfGod admittedly gave him this power based on the canon scene where the heroes were paralyzed by his intense mood.
* HoistByHisOwnPetard: [[spoiler: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]].
* AMindIsATerribleThingToRead: Based on [[spoiler:Nagare's]] account, Stain's mindscape is considered so dark and disgusting that it makes him literally vomit after entering it.
* NotSoWellIntentionedExtremist: 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 [[spoiler:wannabe villain]].
* PsychoKnifeNut: A serial killer who wields carries an arsenal of swords and knives.
* UndignifiedDeath: [[spoiler:Stain is killed after receiving scratch wounds from Kuriboh which results in a fatal allergic reaction]]. [[spoiler:Book 2, however, reveals that his true cause of death was ingesting Yuugi's overreactive blood which destroyed him from the inside]].
* WouldHurtAChild: He has no issue using violence against Yuugi and Jounouchi for getting in his way. He even targeted [[spoiler:Seto Kaiba who was only fourteen years old but is the CEO of [=KaibaCorp=]]].
[[/folder]]

!!Introduced in Book 2
[[folder:The Eight Precepts of Death]]

A sinister yakuza group with the intention of revolutionizing modern society using controversial means.
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* AbusiveParents: Overhaul kept Eri prisoner in his mansion and treated her as a tool to create his Anti-Quirk bullets.
* AnArmAndALeg: [[spoiler:Overhaul loses both his arms after failing to escape Shigaraki's Nomu]].
* BarrierWarrior: Tengai's Quirk allows him to create defensive barriers.
* BrainsAndBrawn: Tengai and Rappa are paired up to support one another, essentially acting as the "Shield and Spear".
* TheBrute: Rappa is the strong man who relies on needless violence when in combat.
* DeathByAdaptation: [[spoiler:[[CannotTellALie Shin Nemoto]] is killed by one of the Yuuki members during the new Yakuza Raid while [[StickyFingers Soramitsu Tabe]] and [[TimeStandsStill Chronostasis]] are disintegrated by Shigaraki a few days later]].
* HowTheMightyHaveFallen: [[spoiler: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 [[GreaterScopeVillain 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.
* PlagueDoctor: Each member wears a bird shaped mask that Yuugi considers to be tacky. And [[spoiler:Mako]] reveals that they're still planning on eliminating Quirks through their special bullets.
* TheRival: Constantly butt heads with the Meta Liberation Army and Tsunako's yakuza division.
* TouchOfDeath: Overhaul's Quirk allows him to disassemble anything he touches. Though he can reassemble them if needed.
* TheUnfought: PlayedWith. [[spoiler: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]].
* WouldHurtAChild: They're all complacent with Eri's abuse and experimentation to further their agenda.
[[/folder]]

[[folder: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.
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* ChronicBackstabbingDisorder: They were convinced by Seto to betray their former boss Gozaburo by transferring their shares to the ChildProdigy. But now they want the corporation for themselves and are doing everything in their power to eliminate Seto.
* DisproportionateRetribution: 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.
* EvilOldFolks: All 5 members are middle-aged but Oshita (the freaky fish guy) stands out as the oldest among them.
* FantasticRacism: They don't have a favorable opinion over Pro Heroes with Mutant Quirks.
* NonActionBigBad: Given their status as high ranking businessmen, they won't be involved in directly fighting the heroes to further their agenda.
* PutOnABus: [[spoiler: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]].
* WoundedGazelleGambit: Oshita gains a hip injury and needed to be taken to the hospital. It was a ploy to [[spoiler:draw everyone's attention so no one would notice Mokuba being abducted]].
[[/folder]]

[[folder: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'''.
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* AdaptationalWimp: In the original series, his mind-reading abilities made him a significant danger to Yugi 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.
* BerserkButton: He doesn't take kindly to people speaking ill of [[TheLostLenore his departed wife Cecelia]].
* BewareTheMindReader: His Quirk involves mind reading as he attempts this on [[spoiler: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]].
* CorruptCorporateExecutive: 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.
* DarwinistDesire: [[spoiler:He's been collaborating with Dr. Aknadin to create a surrogate heir that takes after him and his dead wife]].
* DisproportionateRetribution: Bandit Keith insulted his dead wife on a Minecraft livestream, so Pegasus retorted by having his company blacklisted and unable to obtain spider silk.
* EyeScream: [[spoiler:He's struck in his left eye by a metal rod sent by Wolfram]].
* TheFriendNobodyLikes: Despite being the president of Industrial Illusions, nobody on I-Island enjoys having him around.
* TheGadfly: He has a habit of provoking others to lose control which he finds to be entertaining.
* GoodScarsEvilScars: Instead of a Millennium Eye, he now has exophthalmos which resulted in gaining surgical scars where his left eye is.
* LaserGuidedKarma: His efforts to sabotage Kaiba's company with his nefarious schemes result in [[spoiler:him being exposed for his crimes and having to give up his half of the company's shares to the boys]].
* NonActionBigBad: Much like the Big 5, he'd rather have his cronies attack the Kaiba boys and their associates as to avoid tarnishing his reputation.
* PoliticallyIncorrectVillain: He casually calls Yuugi a "savant" which he takes offense to.
* TermsOfEndangerment: Still uses the suffix "-boy" when addressing Yuugi and Seto.
[[/folder]]

[[folder:Wolfram]]
!!Wolfram

A hulking, twisted brawler serving as Pegasus' right hand stooge. His Quirk is '''Metal Manipulation'''.
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* AddictionPowered: [[spoiler:He steals some of Dr. Aknadin's Quirk enhancement drugs to give him a power boost as he attacks I-Island]].
* BeyondRedemption: [[spoiler: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]].
* TheBrute: Tends to beat people senseless if his boss commands him to.
* ClimaxBoss: [[spoiler:He usurps Pegasus' position as the main villain of the ''I-Island Expo'' Arc]].
* DePower: [[spoiler:Thanks to Yuugi erasing one of the corrupt doors in his Soul Room, Wolfram becomes weaker in battle and loses control over his Quirks]].
* DeathOfPersonality: [[spoiler:Yuugi can tell that something happened to his Soul Room which led to a deadly change in personality]].
* DelayedExplosion: [[spoiler:His second Quirk allows him to turn anything he touches into a flammable explosion]].
* DoubleReverseQuadrupleAgent: Along with working as Pegasus' bodyguard, he's also working with [[spoiler: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]].
* ExtraOreDinary: His Quirk allows him to manipulate metal of all kinds into weapons to fight or kill people.
* GetOut: He says this to [[spoiler:Pegasus when he tries to read his mind]].
* KarmicDeath: [[spoiler: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]].
* MalevolentMaskedMen: He wears a twisted metallic mask and works under Pegasus.
* PersonOfMassDestruction: [[spoiler:Wolfram goes absolutely ballistic on the streets of I-Island after he's exposed for his thefts]].
* PlayingWithFire: [[spoiler: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]].
* PraetorianGuard: An exceptionally powerful bodyguard working for one of the most influential men in the Support Industry.
* SourOutsideSadInside: [[spoiler:Yugi and Yami encounter another pitiable man inside his Soul Room that was connected to his Second Quirk]].
* TheStarscream: [[spoiler:He ends up betraying both Pegasus and Abrahams so he can get his hands on some powerful Quirk enhancement drugs]].
* WouldHurtAChild: [[spoiler:He oversees Mokuba's kidnapping and later tries to kill him and the I-Island Trio]].
[[/folder]]

[[folder:Mako and Insector Haga]]

Two young lads who are associated with the [[SuperSupremacist 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'''.
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* AdaptationalSpeciesChange: In his original series, Ryuta was a human boy. In here, he's now a shark boy.
* AdaptationalVillainy: PlayedWith. Mako is in league with the [=MLA=] and has embraced their ideologies. However, [[spoiler:he's also working directly with Aizawa by giving him information to support his cases]].
* AffablyEvil: 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.
* AgeLift: Insector is described as being a few years older than Yuugi, unlike being the same age as him in canon.
* BadLiar: Mako is not one for lying on the spot.
* BerserkButton: He also does not take kindly to being called a "freaky fish guy".
* DoubleAgent: [[spoiler:Mako is revealed to be Aizawa's informant and spills any tea he finds relating to criminal groups of interest]].
* EvilDuo: Are introduced together while antagonizing Yuugi and friends.
* FourEyesZeroSoul: Haga still has his thick glasses and takes exceptional pleasure in sending his insect horde to attack his foes.
* HiddenDepths: WordOfGod 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 SharkMan.
* ImHavingSoulPains: According to Ishizu, Insector can still feel the same pain as his insect minions.
* PestController: 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.
* PutOnABus: [[spoiler:Mako mentions that Insector was put on another assignment after his recent course of shameful actions]].
* SharkMan: Mako is designed to look like a giant shark.
* SuperSupremacist: Both of them are in league with the Meta Liberation Army.
[[/folder]]
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