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Introduced in Book 1
Nemuri Kayama/Midnight
Nemuri Kayama
A playful and clever woman who's made a career for herself as the +18 Plus Hero. Her Quirk is Somnambulist.
- Be Careful What You Wish For: She spends all of Book 1 trying to get Yuugi to remember her name. But now he calls her that even when she's doing her hero duty.
- Cool Big Sis: She wants Yuugi to think of her as one and goes out of her way to be kind and thoughtful towards him.
- Hidden Depths: She's published an academic article that focuses on eroticism in pre-modern Japanese shunga and how it relates to superhero pinups in the modern era.
- It Runs in the Family: Her ability to put people to sleep makes sense when you consider that her aunt was known as the "Knock Out" Hero.
- Knock Out Gas: Her Quirk involves emitting a pink aroma that puts people to sleep.
- Ms. Fanservice: Her hero image revolves around sex appeal, befitting her title as the 18+ Hero.
- Reasonable Authority Figure: In the sequel's third chapter, she tries to protect Yuugi and Jounouchi from the police chief's wrath after they inevitably used their Quirks while fighting a drug addicted villain.
- Related in the Adaptation: She's revealed to be Tanaka-ba's niece.
- Tamer and Chaster: Compared to canon where she was a shameless exhibitionist who casually flirted with her students, the Nemuri in this story has more self-control when interacting with Yuugi and his friends and lives up to her dominatrix theme only at work.
- Whip of Dominance: Fitting her dominatrix theme, she wields a long whip.
Hizashi Yamada/Present Mic
Hizashi Yamada
A DJ hero with an over-the-top personality. Yuugi hates him because of how loud and destructive he can be. His Quirk is Voice.
- Cool Teacher: Downplayed. Yuugi is horrified that he's stuck with Present Mic as his new homeroom teacher. But his opinion of him softens after Mic gives a solid lecture on being respectful to students with disabilities.
- Hidden Depths: Hizashi works directly with a support company that makes noise-modifying hearing aids for the deaf and people who are sensory sensitive. Yuugi himself owns a pair and he begrudgingly considers it to be the one thing he likes about the hero.
- Nice Guy: In spite of his destructive tendencies, he's honestly a pretty friendly guy who genuinely tries to help people. Especially people of disability. He even explains to his students on the First Day on how to be mindful about any student's disability accommodations and how to help them.
- Once Done, Never Forgotten: Courtesy of Tanaka-ba spilling the tea to heroes and children of all ages, his incidents of unintentionally destroying public property due to his entomophobia will haunt him for as long as he shall live.
- Person of Mass Destruction: Hizashi doesn't mean to be, but he has a bad habit of screaming his lungs out whenever he sees an insect in public which leads to unbelievable collateral damage.
- Straight Gay: He's into men and is in a serious relationship with Eraserhead.
- Super-Scream: His Quirk involves emitting a destructive wail that can neutralize foes. Yuugi dislikes him because his screaming power often leads to sensory overload.
- Why Did It Have to Be Snakes?: He's deathly afraid of bugs or anything that resembles one.
Shouta Aizawa/Eraserhead
Shouta Aizawa
An underground hero with a somber personality and a soft spot for all things small and cute. His Quirk is Erasure.
- Big Damn Heroes: He manages to apprehend Stain in Chapter 19 when the monster tries to kill Yuugi and Jounouchi.
- Cloth Fu: He weilds a large capture cloth that can be used to move places or to capture targets of interest.
- Friend to All Children: He has a soft spot for children and is more than willing to help them however he can. Especially when it comes to managing their Quirks.
- Hidden Heart of Gold: He's always serious when interacting with others and is quite harsh, but he has a good heart and does show genuine care for others. Especially for the youth.
- Introverted Cat Person: He owns a tabby named Obelisk, and has a whole photo album on his phone featuring cats, but he isn't much of a people person.
- The Mentor: In Book 2, Tanaka-ba blackmails him into helping Izuku with managing his newly manifested Black Whip Quirk.
- Parental Substitute: Just like in canon, he takes care of Eri after she escapes from the Eight Precepts.
- Power Nullifier: His Quirk allows him to "erase" or neutralize a person's Quirk.
- Reasonable Authority Figure: He actually lives up to this role during the Yuuei First Days Arc by expelling Mineta for sexually harassing the girl students. And later, he chastises the students of 1-A and Gen Ed for allowing a fight amongst their peers to occur while they did nothing to stop it.
- Red Eyes, Take Warning: His eyes turn piercing red whenever he's serious or using his Quirk.
- Stern Teacher: He's presented as exceptionally serious whenever he's teaching something to the boys.
- Straight Gay: His in an intimate relationship with Present Mic.
Enji Todoroki/Endeavor
Enji Todoroki
The Number Two Hero known for his strict dedication to his job. Next to Present Mic, Yuugi considers him to be his most despised hero. His Quirk is Hell Flame.
- Abusive Parents: Once the boys reach Yuuei and befriend Shouto, they learn of the atrocities Endeavor committed in his quest to turn his youngest son into a tool to surpass All Might.
- Bullying a Dragon: He speaks rather crudely in front of Seto Kaiba which leads to the Teen CEO proclaiming his decision terminate Endeavor's contract with his support department.
- Can't Catch Up: Despite his efforts in cracking countless crime cases and capturing crooks and criminals, he just can't take All Might's crown as the Number One Hero.
- Control Freak: Fitting his desire for a perfect heir, he oversaw Shouto's education as a potential hero and makes decisions for him that his son wouldn't agree with.
- The Friend Nobody Likes: Despite his commitment to stopping crime, almost everyone around him as a negative opinion about him. Yuugi strongly hates him for being so unnecessarily destructive, Izuku notes how he doesn't have the same peaceful and pleasant atmosphere as All Might, Jounouchi also hates him and collects memes that ridicule him, and Seto Kaiba considers him a nuisance who gives Support Companies headaches with his reckless fighting habits.
- Oh, Crap!: He turns into a panicking mess upon realizing that he badmouthed Seto Kaiba who in turn planned to drop him from his support company.
- Person of Mass Destruction: Unlike Hizashi who doesn't mean to destroy public property, Endeavor shows no restraint when it comes to fighting villains as it often results in unimaginable property damages along with villain (and civilian) causalities. It's because of this that Yuugi hates him so much.
- Playing with Fire: His Quirk allows him to control extreme levels of fire.
- The Rival: To All Might. His desire to take the title as Fairest Hero in the Land is what motivates him to be a stronger hero.
- Smug Super: He thinks highly of himself for his impeccable firepower. And according to his son, he thinks lowly of Rescue Heroes for not being able to achieve the same level of publicity as Offense Heroes.
Mirai Sasaki/Sir Nighteye
Mirai Sasaki
A cautious and hypercritical man who is difficult to work with. He was also All Might's Former Sidekick. His Quirk is Foresight.
- Asshole Victim: He's another victim of Yami's Mind Crush attack but it was warranted not only because he invaded Yuugi's mindscape and refused to leave but also for unashamedly calling Sugoroku a villain.
- The Mentor: He's still Mirio's Pro Hero master.
- Seers: He has the power of Future Vision which allows him to see anyone's future if he touches them and makes eye contact.
- Sour Outside, Sad Inside: In spite of his intimidating and cold front, Yami describes him as Sorrow/fear/invading/danger with the first two hinting at how pitiable he truly is.
- Vagueness Is Coming: The reason he ends up in Yuugi's mindscape was because he had a vision where the boy and his shadow would be play a part in All Might's downfall.
- You Cannot Fight Fate: According to Rishid, Nighteye is a strict believer on how fate and people are unchangeable.
Introduced in Book 2
Mirio Togata/Lemillion
Mirio Togata
A bubbly young man who works as a Pro Hero intern. His Quirk is Permeation.
- The Bus Came Back: He only had one appearance in Chapter 4 but he makes a crucial return in Chapter 20 as he helps out survivors during the Sports Festival Attack.
- Hero with Bad Publicity: Mirio wants to avoid being this by keeping his naked moments to a minimum. He even admits that his nudity can get him publicity from the "wrong" kind of demographic.
- Intangibility: His Quirk allows him to go through walls and other solid surfaces like a ghost.
- Nice Guy: A friendly lad with a good heart. He even went out of his way to visit Izuku to thank him for saving a young boy from a dangerous hero fight.
- Once Done, Never Forgotten: He participated in the Sports Festival but his Quirk caused the whole world to see him in his birthday suit.
Sorahiko Torino/Gran Torino
Sorahiko Torino
A crabby old man who once trained Toshinori and regularly plays poker with, and loses to, Sugoroku Muto. His Quirk is Jet.
- Badass Teacher: Along with helping Toshinori train to handle One For All, he used to be a teacher at Yuuei.
- Didn't See That Coming: In all his time working as a Pro Hero/bodyguard, he never expected his charge Mokuba to drug him just to get some time away from him.
- Goal in Life: In his own words.Gran Torino: My motivation starts and ends with Sugoroku no longer being a smug shit every time we play poker.
- Jerkass Has a Point: In his own frustrated manner, he orders Yuugi and Seto to avoid a Poor Communication Kills situation by having them properly explain what they want from each other in Chapter 5.
- Not Quite Flight: His Jet Quirk allows him to propel at fast speeds which can allow him to "fly" when needed to.
- Obfuscating Stupidity: Will pull a helpless old man act in order to get enemies to lower their guard.
- Vitriolic Best Buds: He and Sugoroku do not hold back in taunting or insulting each other while meeting up for card games.
- When Elders Attack: An elderly Pro Hero who's capable of giving a good whooping.
Tsunagu Hakamada/Best Jeanist
Tsunagu Hakamada
An elegant Japanese Hero ranking at Number 4. He also serves a costume consultant for various Support companies, including KaibaCorp. His Quirk is Fiber Master.
- Badass in Distress: He has a difficult time fighting against Wolfram who injected some Quirk-powering steroids into his system and he would have been grievously injured by the brute had Yuugi not intervened.
- Expert Consultant: Given his expertise as a master of clothing manipulation, Jeanist also works as a consultant for Support companies in regards to Hero costume development.
- Master of Threads: His Quirk allows him to control various types of fibers and threads. He often uses this to attack or restrain any enemy.
- No Mouth: His mouth is constantly covered by a jean-styled collar. Yuugi thinks it looks tacky and uncomfortable.
- Smug Super: Has some shades of this as he disregards Yuugi's preferences for his work and study while "encouraging" him to branch out and try alternate fields Jeanist considers to be more worthy.
The First Ones Chapter 12 Spoilers
The Past Holders of One For All
A league of heroes who were entrusted with the power of One For All and gave up their lives in the war against All For One. After Toshinori transferred One For All to Izuku, Yuugi was able to access their Realm through his friend's mindscape and interact with them.
- Ambiguously Related: Higake, the one with scars and blonde hair, is frequently described as having purple eyes. Something that is commonly shared with the Yuuki Clan.
- Bullying a Dragon: The Third tries to manhandle Yuugi on the second visit regardless of how much damage he can inflict.
- Get Out!: Frequently tell this to Yuugi and Yami whenever they invade their mindscape unannounced.
- Goal in Life: They exist to guide the present holder of One For All to defeat the Emperor of Darkness.
- Hive Mind: Downplayed. They each have their own personalities and thoughts, but they manage to have in-synch reactions whenever a serious topic is brought up.
- Invisible to Normals: To the average person, no one can tell they exist if they looked at All Might or Izuku. But for an Empathy Quirk user like Yuugi, their colorful presence can be detected by looking at their auras.
- The Leader: Yoichi, the creator of One For All, serves as the designated leader of the Past Holders.
- Legacy of the Chosen: Much like Izuku, each one was chosen to carry the torch of One For All and use it's power for the greater good.
- Numerical Theme Naming: They refer to each other by their respective number (Eight for Toshi and Ninth for Izuku).
- Our Ghosts Are Different: They are remnants of the Previous Holders who were killed by the King of Villains and reside in the mindscape of whoever is the Current Holder. They retain the same memories and personalities of the Holders and have ethereal bodies.
- Spirit Advisor: Invoked. After learning that All For One still lives along with Yuugi's threat of eradicating them if they hurt his best friend, the Holders decide to make their presence known to Izuku much faster so they can begin training him with their Quirks. Starting with Banjo's Black Whip.
- Your Mind Makes It Real: As Yuugi learns, any harm they inflict onto him is transferred to his physical body.
Hawks
Hawks
A fresh, laid-back hero with connections to the Hero Public Safety Commission. His Quirk is Fierce Wings.
- Adaptational Jerkass: This version of Hawks is far less patient and is quite aggressive when dealing with Yuugi who keeps getting involved in situations that rile up the Hero Commission.
- Bitch in Sheep's Clothing: He normally tries to keep his image as a friendly and approachable hero to the public. But he shows his blunt and irritated side when interacting with Yuugi.
- Child Hater: A variant. While he can handle child fans given his job, he has no experience or patience in handling kids going through emotional breakdowns.
- The Ghost: In Book 1, Rishid mentioned that the Commission wanted to have Yuugi hang out with the Cool Wing Hero if only to entice him into joining their organization. Jounouchi also mentioned that he's a fan of Hawks but doesn't approve of his compliance with the Commission.
- Hopeless Suitor: He has a crush on Ishizu Ishtar who has zero interest in him. Even though they have slept together twice, she still wants ntohing to do with him.
- Look Behind You: He has a habit of leaving uncomfortable situations by openly calling attention to something else.
- A Man Is Always Eager: According to
Word of God, he and Ishizu actually slept with each other on two separate occasions. While Hawks is still interested in her, Ishizu would rather do anyone else other then him. - Winged Humanoid: He has giant red wings made of feathers that can be used for a variety of tasks.
