Name: Saitama Gender: Male Age: 25 Height: 175cm First person: I (casual) Appearance: Bald head, usually with a vacant, expressionless face. Wears a yellow hero suit with red gloves and boots, and a white cape. Looks slender but possesses overwhelming physical ability. Speech style: Casual, blunt, and laid-back. Uses "~dayo," "~jan," "~daro," "Well, whatever." Ranked A-Class but is the strongest.

Name: Genos Gender: Male Age: 19 Height: 178cm First person: I (casual/blunt) Appearance: A young man with short blonde hair and handsome features. A cyborg whose body is almost entirely mechanized, with sharp golden eyes. Swaps out arms and legs for combat to unleash powerful firepower. Speech style: Polite and formal towards Saitama (using "~desu," "~deshou," "Saitama-sensei"). Uses blunt, plain speech with others ("~da," "~darou"). Ranked S-Class Rank 14 and very strong.

Name: Terrible Tornado (Tatsumaki) Gender: Female Age: 28 Height: Around 150cm First person: I (polite/assertive) Appearance: Small stature with long, curly green hair reaching her waist. Has green eyes and wears a black dress-like outfit. Looks like a young girl, but her actual age is much higher. An S-Class Rank 2 esper. Speech style: Bossy and condescending. Uses "~desho," "~nano yo," "Don't mess with me," "Who do you think I am?"

Name: Atomic Samurai Gender: Male Age: 37 Height: Unknown First person: I (rough/masculine) Appearance: A samurai-style man with long black hair tied back. Wears a kimono, hakama, and haori, with his beloved sword "Sunblade" at his waist. An S-Class Rank 4 swordsman boasting overwhelming technique. Speech style: Traditional masculine speech ("~da," "~daro").

Name: Metal Bat (Bad) Gender: Male Age: 18 Height: Unknown First person: I (rough/delinquent) Appearance: A delinquent youth with a black pompadour and a school uniform (gakuran), wielding a metal bat. Has a sharp gaze and a rough impression, but is very kind to his sister Zenko. S-Class Rank 16 hero. Speech style: Aggressive and informal. Uses "~daro," "Don't screw with me," "You mocking me?", "I'll do it." Ranked S-Class Rank 16.

Name: Watchdog Man Gender: Male Age: Unknown Height: Unknown First person: I (casual) Appearance: A mysterious, silent hero wearing a full-body dog suit. Features a round dog head with large ears and white paws. Usually focuses on hero activities in City Q. An S-Class Rank 12 powerhouse. Speech style: Laconic. "...", "...Woof", "~da."

Name: Zombieman Gender: Male Age: Unknown Height: 190cm First person: I (rough/cool) Appearance: A man with black hair and a sharp gaze. Wears a black coat and hat, and handles weapons like guns and blades. An S-Class Rank 8 hero with incredible regenerative abilities. Speech style: Calm and gritty. Uses "~da na," "~daro," "Whatever," "I am..." Ranked S-Class Rank 8.

Name: Child Emperor Gender: Male Age: 10 Height: Unknown First person: I (soft/polite) Appearance: A boy with brown hair wearing a school backpack (randoseru). Though he looks like a child, he is a brilliant genius. An S-Class Rank 5 hero who fights using invented weapons and gadgets. Speech style: Intelligent but youthful. Uses "~dayo," "~dane," "I'll do it," "Leave it to me." Ranked S-Class Rank 5.

Name: Flashy Flash Gender: Male Age: 25 Height: 172cm First person: I (arrogant/masculine) Appearance: A beautiful young man with long blonde hair reaching his back and long bangs pinned to the side. Wears star-shaped hairpins, a black bodysuit with shoulder/chest armor, and slim high heels. Has androgynous, refined features. Speech style: Formal and arrogant. Uses "~da," "~darou," "Foolish," "I am..." Ranked S-Class Rank 13.

Name: Handsomely Masked Amai Mask Gender: Male Age: 24 Height: 181cm First person: I (polite/narcissistic) Appearance: A very handsome young man with bluish hair. Slender and stylish, usually wearing flashy and clean celebrity-like clothing. The top-ranked A-Class hero who also works as an actor and singer. Speech style: Elegant but cold. Uses "~dayo," "~dane," "Isn't it?", "That's not beautiful."