Class 1-A (Class 1-A Main Characters [Izuku Midoriya, Katsuki Bakugo]) | Class 1-B | Students From Other Classes | School Faculty and Staff (All Might) | Known Villains (League of Villains [Artificial Humans], Shie Hassaikai, Meta Liberation Army) | Other Heroes (Top 10 Ranked Heroes) | Police and Government Workers | Civilians (Main Characters' Families) | One For All and Its Torch Bearers | Other High Schools | Video Game Characters | Movie Characters | Illegals (Main Characters, Villain Factory, Supporting Characters)
Detective Naomasa Tsukauchi
Voiced by: Tokuyoshi Kawashima (Japanese), Alejandro Saab (English)
Debut: Chapter 21 (Manga), Episode 13 (Anime)
Quirk: Human Lie Detector
A police officer who's a longtime friend of All Might, and one of the few people outside of the U.A. staff who knows the truth about One For All. He aids U.A. in investigating the origins and nature of the League of Villains. He's sometimes accompanied by a cat-faced man named Sansa. Vigilantes introduces his sister, Makoto.
- Accidental Discovery: He finds out that All Might is weakened completely because of All Might's own clumsiness and inability to not save the day, leaving the conversation whenever he hears anything, which include purse snatching, a steel beam falling, a giant robot attack and a cat stuck on a tree.
- Ascended Extra: In Vigilante: My Hero Academia Illegals, he goes from a fairly minor character to a major secondary character that appears every other chapter with exposition about the drug case that is the center of the plot.
- Batman Gambit: Fooling the League of Villains into thinking that there are zero leads in the Bakugo kidnapping case via the U.A. press conference while he, the police, and the heroes mobilize themselves towards their hideout.
- By-the-Book Cop: Very much adheres to the letter of the law and proper procedure, which is why he looks down on the Naruhata vigilantes in Vigilantes. It's also a common source of friction between him and his sister, who's much more cavalier about challenging the rules.
- The Commissioner Gordon: He is a vital ally of All Might, supplying him with information about investigations. Vigilantes reveals that he is also the one taking care of the paperwork for All Might unauthorized random hero acts to make sure All Might is kept on the up and up.
- Living Lie Detector: According to the official character book, his Quirk is Human Lie Detector. The specifics aren't stated, but apparently it's better than his sister's Polygraph Quirk.
- Mr. Exposition: Most background info about investigated or captured villains tends to come from him.
- Nice Guy: Enough to be trusted by All Might.
- Non-Action Guy: His overall role is mostly investigative, leaving the actual fighting for All Might and other heroes.
- In Illegals he does demonstrate himself to be a excellent shot and good tactician, able to take down a speedster by shooting him during the cool down time of his quirk. It still somewhat counts however, as it becomes apparent that he doesn't carry nearly enough firepower to take down even a moderately durable quirk user.
- Secret Keeper: To All Might, as he's one of only seven people who knows about the true nature of One For All, though he only found that out as a complete accident. He's also one of the few outside U.A. to know about that.
Chief Kenji Tsuragamae
Voiced by: Ryota Takeuchi (Japanese), Chris Guerrero (English)
Debut: Chapter 56 (Manga), Episode 31 (Anime)
Hosu's dog-faced chief of police.
- Ambiguously Human: Despite his appearance, he's apparently human.
- Armor-Piercing Response: He knows where he stands when Todoroki starts to object about why they should be punished for using their powers on Stain:Todoroki: If Iida hadn't stepped in, Native would've been murdered, and if not for Midoriya, both of them would've been killed. No one else even knew the Hero Killer was in Hosu, are you saying we should've stood by and watch people die?!
Kenji: So it's ok to break the law as long it goes your way?
- Bearer of Bad News: Kenji is bound by duty to tell all the students how the police officially interpret their actions. Todoroki doesn't read between the lines and assumes he's chewing them out and they are going to be punished for a situation out of their control that required them to sidestep the law for the greater good. This display of shooting the messenger makes Kenji remark how he's still an egg as a hero, since he hasn't come to learn when people pass along others' opinions as their voice box because their duties require them to.
- By-the-Book Cop: One of the first things he does is making a speech about the importance of following Quirk regulation laws in regards to the good of society.
- Expy: Of McGruff, the Crime Dog.
- Non-Human Head: He is a dog, at least from the neck and up.
- Non-Standard Character Design: He is drawn with a hyper-realistic dog head. This is more prevalent in the manga, where the shading is very intricate around all the folds of his snout and his eyes have a lot of deep details etched into them.
- Pungeon Master: One English translation gives him dialogue peppered with dog puns. In the Japanese/English dialogue, he ends his sentences with "wan"/"woof".
- Reasonable Authority Figure: He is willing to not officially disclose the Hero Killer incident in order to avoid punishing Midoriya, Iida and Todoroki for their irresponsible, but heroic deed.
- Sincerity Mode: He starts his conversation to Midoriya, Iida, and Todoroki with the official opinion of the police, but then gives them his personal thanks. He also apologizes that they won't get credit as a tradeoff for remaining in the clear with the law, but at the very least, they have his private thanks.
- To Be Lawful or Good: While he does get into an argument with Todoroki over this, he's still flexible enough in his morals to give the students a chance to avoid being punished for breaking the law.
- Verbal Tic: Constantly says "woof" with most of his sentences.
Hero Public Safety Commission
Voiced by: Masami Iwasaki (Japanese), Kenny Green (English)
Debut: Chapter 103 (Manga), Episode 53 (Anime)
A member of the Hero Public Safety Commission. He oversees the Provisional Hero License Exam. Hasn't slept well for a while due to loads of work.
- Exhausted Eye Bags: Due to being overworked and a general lack of sleep.
- The Insomniac: His job is very demanding. Due to the Hero Public Safety Commission being understaffed, he doesn't have time to sleep, which he complains about a lot.
- Mr. Exposition: Explanations about the workings of the Provisional Hero License Exam are given by him.
- Seriously Scruffy: His overall appearance is quite sloppy.
- Sleepyhead: Mera is barely able to stay awake as he handles his duties, and is liable to conk out if nothing interesting happens to keep him up and at 'em. Case in point: as much as he wants to proctor the license exams, eventually his exhaustion sets in and he just wants to go to sleep, impatiently pleading for the examinees to hurry along through the first round elimination process... but he's then snapped firmly awake by Inasa knocking out hundreds of people at once.