One For All Wielders
One for All Vestiges
These are the past users of One for All. They communicate telepathically with Izuku and Nana.
- Adaptational Early Appearance: They appear right after Izuku accepts One for All after the USJ incident instead of after the Shie Hassakai arc.
- Adapted Out: The canon Second and Third wielders are replaced by Akira Nishikiyama and Kazuma Kiryu here.
- Ascended Extra: While the previous wielders are important characters already in canon, by showing up early and becoming Izuku's spiritual advisors, they end up playing a much larger role in the story.
- One Degree of Separation: The Midoriyas descend from the Third's adopted daughter.
- Yakuza: The Second and the Third were this.
Yoichi Shigaraki
Quirk: One For Allnote (Formerly)
The first wielder of "One For All", the younger brother of All For One who had a strong sense of justice. Because his Quirk was completely unnoticed before One For All's creation, Yoichi was presumed to be Quirkless and could only watch his brother commit atrocities one after the other. Eventually, in a twisted showcase of affection, his brother decided to forcefully implant a Quirk within him, forming "One For All". Yoichi was able to pass his Quirk down to successors hoping one day it will grow powerful enough to defeat his brother.
- Positive Friend Influence: It was thanks to his influence that Nishiniki made amends with Kazuma and got back together with Reina.
Akira Nishikiyama
Quirk: Quirkless
The Second User of One for All and a former member of the Yakuza.
- Adaptational Heroism: Thanks to Yoichi's positive influence, he never falls to the dark side and even manages to make amends with Kazuma and Reina.
- Battle Aura: Much like many other characters, he could Heat.
- Berserk Button: As someone who deeply regrets being abusive to someone he loves, domestic abuse is a major one to him, so is completely understandable when he asked to "borrow" Izuku's body for a couple of minutes to commit a murder when he found out about Endeavor's abuse from Shoto.
Kazuma Kiryu
Quirk: Quirkless
The third wielder of One for All and the original True Dragon.
- Action Dad: He certainly counts when he takes in Haruka and the kids at Morning Glory Orphanage, even if they're not blood-related.
- Badass in a Nice Suit: He always wore a light gray with a maroon dress shirt. His style eventually influences Izuku as well.
- Silver Fox: Downplayed, since he is not that old, but Nana considers him this due to his mature looks and Action Dad personality.
Hikage Shinomori
Quirk: Danger Sense, One For All (Formerly)
The fourth user of One for All. He was one of the kids that lived in the orphanage where Kiryu worked at.
- Happily Adopted: He says his time at the Morning Glory orphanage was the happiest of his life.
Daigoro Banjo — Lariat
Quirk: Blackwhip, One For All (Formerly)
The fifth wielder of "One For All", a past hero known as Lariat in his time. He's a bit on the aggressive side and is the second user to directly talk to Midoriya as a vestige. His original Quirk, "Blackwhip", can create dark tendrils for restraining and movement purposes.
??? En
Quirk: Smokescreen, One For All (Formerly)
The sixth wielder of "One For All", Daigoro's colleague and Nana Shimura's predecessor. He dresses with an extremely high collar similar to that of Best Jeanist. His original Quirk, "Smokescreen", produces thick smoke layers.
- Like a Daughter to Me: He considers Nana the closest thing he ever had to a child. Which is why he is so disturbed upon seeing her in a provocative cheerleader outfit during the Sports Festival.
Heroes
Enji Todoroki — Endeavor
Quirk: Hellflame
Todoroki's father, and the Number Two Pro-Hero, who has deep envy of All Might.
- Adaptational Nice Guy: Sorta. He's introduced as the same jerkass like canon, but his more positive traits are shown earlier in his concern that his son was going to awaken Theory's Core Crystal.
- Always a Bigger Fish: He's the bigger fish when he catches Yotsubashi threatening U.A. students and tells him to scram and leave the kids alone.
- Heel Realization: Had his before the fic started when he saw how Shouto was hurting himself by only using the ice half of his Quirk, Endeavor fearing that he'll end up like his brother Touya.
- Like Father, Like Son: Like Shouto in canon, he believes that Izuku is All Might's secret lovechild. No matter if Izuku tells him who his parent really is, Endeavor takes it as All Might hiding himself behind a false identity to have a family.
- Not So Above It All: He joins Shouto when he makes The Big Board to track Izuku's ancestry.
Keigo Takami — Hawks
Quirk: Fierce Wings
Japan's current #3 Hero, he is the youngest Hero to obtain his own agency. Unknown to most of Japan, he works directly for the Hero Public Safety Commission. Currently has taken Bakugo in as his apprentice.
- Adaptational Jerkass: Subverted. It turns out he's being paid to take Bakugo as an apprentice and is just as disgusted with the kid as everyone else. He even wants to apologize to Bakugo's victims for forcing himself to defend the punk.
- Broken Pedestal: Izuku and his friends lose any respect they had for him when he reveals that Bakugo is his apprentice and calls the latter's actions (which led to one fellow student to nearly die) "petty schoolyard squabbles".
Sorahiko Torino — Gran Torino
Quirk: Jet
An elderly and retired Pro-Hero who is also All Might's homeroom teacher.
- Badass Teacher: He is The Mentor to All Might.
- The Dreaded: Much like in canon, All Might is outright terrified of him.
Yu Takeyama — Mt. Lady
Quirk: Gigantification
A hero who recently joined the business, Mt. Lady is nice yet fame hungry. Her Quirk allows her to change to the size of a giant and back, but no in-between. Despite her craving for attention, she is a genuinely good person who tries her hardest to save people and feels bad when she can't.
- Break the Haughty: A downplayed example. She was a bit shaken after the Sludge Villain incident where Bakugo nearly died and the most she and the other pros did was stand by while Izuku ran in to save him, with the other pros just yelling at Izuku for doing so. All in all, it was a sobering experience for her first day as a pro.
Shinji Nishiya — Kamui Woods
Quirk: Arbor
Kamui Woods is a fairly recent hero with a very strict moral code. He looks to save people and punish people who do wrong but is a bit too serious about it. His Quirk changes his skin to wood that can stretch into large branches he can control.
- My God, What Have I Done?: While he was one of the pros who scolded Izuku for running in to save Bakugo from the Sludge Villain, he came to regret it after the boy ran off crying.
Death Arms
Quirk: Unnamed Strength Enhancement Quirk
Death Arms is a hero with a fairly short temper. He does try to save people but mostly for recognition. He is also stubborn to a fault, not liking to admit when he is wrong. His Quirk gives him basic super strength, which often causes him to brute strength a situation rather than use his brain.
- Lack of Empathy: In sharp contrast to Mt. Lady and Kamui Woods, Death Arms felt no remorse at all for nearly letting the Sludge Villain kill Bakugo, nor does he feel any guilt for yelling at Izuku for jumping in. He justifies both by saying that none of them had the right Quirks for the former, while the latter was putting himself in unnecessary danger. While he did have a point about Izuku, it didn't mean he had to yell at a kid who clearly had a bad day.
- Not Helping Your Case: He insists to Mt. Lady and Kamui that he isn't Quirkist, just that he thinks that Quirkless people should not be heroes.
Mirai Sasaki — Sir Nighteye
Quirk: Foresight
All Might's former "sidekick" whose Quirk allows him to see the future.
- Adaptational Early Appearance: He shows up during the Sports Festival as one of the many viewers.
- Bad Boss: He puts Bubble Girl through the tickle machine simply for having a different opinion from him.
- Believing Their Own Lies: He keeps telling himself (and Mirio) that he and All Might are old friends when in reality All Might filed a restraining order against him and has never considered him his friend.
- I Reject Your Reality: He takes anything Izuku does and twists it to his idea that he's a Sketchy Successor to All Might.
- I'm Standing Right Here: When muttering about his plans to force Izuku to surrender One for All to Mirio, he forgets Bubble Girl is listening.
- Insane Troll Logic: He somehow believes Izuku stole One for All from Mirio.
- Insistent Terminology: He keeps calling One For All Mirio's Quirk.
- Loophole Abuse: All Might's restraining order against him only applies in Japan, so he can legally approach him while in I-Island.
- Missing Steps Plan: His plan to deal with Izuku consisted of 1) cornering Izuku and bullying him into giving One for All to Mirio, 2) finding All Might and rekindle their "friendship", 3) profit!
- Stalker with a Crush: If Izuku is to be believed (and given that Sir Nighteye never contradicts him, it's likely true), Nighteye once stole All Might's hospital records (and laminated them) because they were "a rare piece of All Might merch", snuck into his house to take pictures of him sleeping and steal his underwear, keeps a Stalker Shrine and a voodoo doll of David Shield and has a custom-made blow-up doll of All Might.
Kaoruko Awata — Bubble Girl
Quirk: Bubble
One of Sir Nighteye's current sidekicks. Her Quirk lets her create bubbles with an assortment of smells that she can then pop at will with explosive force.
- Beleaguered Assistant: Out of all of Nighteye's employees, she's the one that's the most mistreated with Bubble Girl being put in the tickle machine over every minor mistake either real or not even a mistake, and even just having a different opinion from him.
- Cerebus Retcon: In canon, the "tickle machine" is treated as a throwaway joke about Nighteye's dry sense of humor. Here, not at all. The situation is described as pretty much sexual harassment, a deeply traumatic experience that causes Bubble Girl to have panic attacks and cry by simply thinking about it.
- Cold-Blooded Torture: An unusual example. Nighteye has the habit of strapping Bubble Girl at the machine for the smallest inconveniences, like messing with the paperwork. The sidekick is still traumatized nonetheless.
- Everyone Has Standards: After hearing Nighteye plotting how to force Izuku to give up One for All, she goes to meet Izuku as soon as she can to warn him about it.
- Trauma Button: Sir Nighteye's "tickle machine" causes her to shiver and cry out.
- Birds of a Feather: Bubble Girl found common ground with Eri over mutual love of a Magicial Girl Anime.
Tatsuma Ryuko — Ryukyu
Quirk: Dragon
The current 9th-highest ranked hero in Japan, a calm woman with a dragon-themed outfit and Nejire's mentor.
Shinya Kamihara — Edgeshot
Quirk: Foldabody
The current Number Four Hero, who serves as Momo and Toru's mentor.
- Commonality Connection: He admits the main reason he recruited Hagakure is because she is invisible and he is a ninja, so he is perfect for teaching her stealth.
- Scarf of Asskicking: Edgeshot wears a dark red scarf that he made himself, but prefers to say it was made by his sidekicks.
Reki Kyan — Mechanic Star
Quirk: Artisan
The Skater Hero, Snow's husband and one of Reiko's mentors during the Internship week.
- Broken Tears: He cried a lot when he found out Izuku is, for all effects and purposes, his surrogate cousin, since Reki knows he didn't have a good childhood due to being Quirkless and could have used having at least a sibling there for him.
- One Degree of Separation: Izuku is the nephew of the Morning Glory Orphanage manager, who is the closest thing Reki ever had to a mother, meaning they are pretty much cousins.
- Shared Family Quirks: Reki may not be related to Izuku by blood, but he is as Prone to Tears as his cousin.
- Super-Reflexes: His Quirk, Artisan, allows his hands and fingers to move faster, more flexibly, and with much greater precision than anyone else. His brain functions are also enhanced to match his hands' movements.
Langa Hasegawa — Snow
Quirk: Snow
One of the Skater Heroes, Reki's husband and one Reiko's mentors during the Internships.
- An Ice Person: His quirk allows him to create and manipulate snow.
- Pet the Dog: He helps Reki get over his guilt over not being there for Izuku when he finds that Izuku is his surrogate cousin.
Wild Wild Pussycats
A four-person hero team that specializes in mountain and forest rescues who Nia goes to for the spring internships. Their members include Mandalay, Pixie-Bob, Ragdoll, and Tiger.
- Animal Theme Naming: Mandalay, Pixie-Bob, and Ragdoll are all named after different domestic cat breeds. Tiger is named after a large wild cat instead.
- Animal-Themed Superbeing: The animal alias type; they're all cat-themed heroes in names and appearance, but their Quirks don't have anything to do with cats.
- Cat Girl: The overall theme of their hero costumes. They all wear fake cat tails, paw-like gloves, and headsets that resemble cat ears.
- Color-Coded Characters: Mandalay is red, Pixie-Bob is blue, Ragdoll is yellow, and Tiger is brown.
Shino Sosaki — Mandalay
Quirk: Telepath
The leader of the Wild Wild Pussycats. Her Quirk is "Telepath", which allows her to talk to multiple people at once through mental transmission. She's the legal guardian of her nephew, Kota Izumi.
- Nephewism: She's raising her orphaned nephew Kota.
- Only Sane Man: Compared to the off-the-wall personalities of the other Pussycats, Mandalay is more straightforward and composed.
Ryuko Tsuchikawa — Pixie-Bob
Quirk: Earth Flow
A member of the Wild Wild Pussycats. Her Quirk, "Earth Flow", lets her control dirt and rock.
- Dishing Out Dirt: Her Quirk allows her to manipulate dirt and rock.
- Insistent Terminology: When Nia called her a pedophile, Pixie-Bob counters she's an ephebophile.
- Mrs. Robinson: She's very interested in meeting Izuku, calling him "primo boyfriend material", to Nia's ire.
Tomoko Shiretoko — Ragdoll
Quirk: Search
An upbeat member of the Wild Wild Pussycats. Her Quirk, "Search", allowed her to observe and monitor up to 100 people at a time, including their location and weak points. Once she's "observed" a person once, she can locate them again at her leisure.
- Chairman of the Brawl: During Kamino, she goes to find a steel chair and comes back to knock out All for One with it.
- Secret-Keeper: Due to her Quirk, she learns about Nia's secret. Ragdoll promises to keep quiet about it, even from the other Pussycats.
- Sensor Character: Thanks to her Quirk, she can track the location and weak points of up to 100 people at the same time. This allows her to discover Nia's secret.
Yawara Chatora — Tiger
Quirk: Pliabody
The sole male member of the Wild Wild Pussycats. His Quirk, "Pliabody", allows him to stretch and flatten his body.
