A hero otaku who was given the powers of Ratman. His idolization of heroes began when he was very young, and the legendary superhero Shiningman saved him from a collapsing building. Crea insists that he was chosen to be Ratman because nobody in their right mind would guess that someone as small as him would be Ratman.
Otaku: Shuto constantly nerds out over anime and heroes, and is often picked on for it.
One-Winged Angel: If Shuto becomes really angry his S-Genes overwhelm him and he transforms into a bestial, berserk form with claws on its hands and feet, different Facial Markings and a long tail. When Shuto thinks Sin has killed Mirea his S-Genes kick into overdrive and he becomes a mindless monster that makes his previous berserk form seem tame.
Organization With A Dark Secret: Crea and Mirea's parents were two of the founding members of the Hero Organization and were involved in the creation of Shiningman.
Revenge: Chapter nineteen confirms this as their true goal.
Villains Out Shopping: The Jackie combatants are frequently dispatched to purchase food supplies, often with humorous results. Reality Ensues when Mirea is photographed with them by a reporter for the chief hero magazine and Ratman has to rush to prevent it from being published.
The leader of Jackal who made the technology of Ratman's APPEND GEAR. Mirea's older sister. She raised Mirea herself after the deaths of their parents.
Hidden Depths: He actually knows and understands his granddaughter very well, and the only real reason he's involved in mad science or supervillainy is because he feels her revenge plot is something she needs to go through with for her own sake.
The Mole: Joined up to investigate the S-Genes. Also a rare positive variant, as the people he's working with have made it clear that they are not above breaking the law and doing downright awful things. At least Jackal avoids the latter...
A young man who somehow has powers despite not having the special equipment most heroes rely on. Soon after he's introduced, he uses his powers to save Shuto's life and they quickly become friends. However, he's also a guinea pig for a very shady branch of the Heroes' Association, and has become their latest S-Ranked hero: Unchain. He was abused as a child because his parents feared his powers.
Abusive Parents: His parents feared him for his powers so much that they kept him shackled and inside of a closet most of the time.
Karma Houdini: Played with. He's depicted as a legitimate victim and clearly doesn't enjoy having to be evil when in control of himself. Rio realizes this and essentially forgets about how he was one of her captors.
Laughing Mad: When he finds out Shuto is Ratman he telekinetically tears the school roof apart while cackling.
A hero who worked for the security company ANK Security. After the company flopped, he retired from being a hero but became one again when his gym hired him to be their commercial hero and renamed itself Kaiser Boxing Gym.
Superheroes Wear Capes: Wears one for a while until he gets rid of the cape when he gets a new hero suit in Episode 25.
Mikoto Kujo/Ame-No-Uzume-No-Mikotonote Better known as Mikoto or Heavenly Maiden
A heroic swordswoman who also happens to be a first-year student at Shuto's school. The youngest A-ranked hero, and the commercial hero and the sixteenth owner of the vintage fiber manufacturing company Haori.
A-Cup Angst: Expresses embarrassment when IS-KA lists her three sizes.
Action Girl: One of the youngest superheroes registered at the Association, but holds an A-rank.
Blue Blood: The motif and themes of her hero-self shows elements of this. The company that sponsors her is apparently a very elite, highly respected company that has been trading and making high-quality fabrics and gowns for several centuries. Think a designer brand that mostly caters to the very elite, rather than just about anyone who's willing to shell out the cash. Not to mention her title.
Warrior Therapist: Guesses without being told that Shuto was going to try to tap into the same S-Genes that were driving other heroes crazy and manages to get to the root of Mr. Big Horn's issues that drove him to use the hero amplifier, momentarily talking him out of his rampage.
Emergency Transformation: A variant. He was allowed to become Shiningman after coming to his friends, whom he was working with in order to create a superhero, and explaining to them that the people he was working against in a court case have taken his son hostage.
The Glasses Come Off: Before he was a hero, he was a glasses-wearing lawyer. When he's about to be turned into Shiningman for the first time, he takes off the glasses that he almost always wore, revealing how he's essentially an older version of Shuto in appearance.
In the Blood: Infused Shuto with the S-Genes by giving him a blood transfusion to save his life.
Better Manhandle the Murder Weapon: The reason why Crea has it in for him. He attacked the soldier who killed her parents, making him drop his gun. Shouichiro then grabbed the gun that killed his friends, vowing he would never forgive their killers. Crea only arrived after the soldier had already fled, so all she saw was Shouichiro standing over the bodies of her parents while holding a gun.
Hidden Depths: Is a 4th dan in karate, a black belt in judo, and a 5th dan in in kendo. He also has a scar from fighting bears.