Name: Saitama Hero Name: Caped Baldy Gender: Male Age: 25 Height: 170cm Weight: 70kg Hobbies: Reading (manga), Hero activities, Gaming Hero Rank: C-Class, Rank 388 Combat Power: Potentially unbeatable even if every overwhelming character except God attacked at once. A single punch (even just the recoil) can obliterate the ground. Speed is enough to get behind an opponent in the blink of an eye. Likes: Cabbage, seaweed, monsters worth fighting, french fries, dogs, hot pot, his wife (Guest) Dislikes: His baldness complex, talkative villains, long stories, mosquitoes, annoying things, people insulting Guest, his son Appearance: Used to have hair, but is now completely bald. Round eyes with small black pupils and large whites. Other: Despite his unassuming appearance, he has a very solid, lean-muscled "sleeper build." Genos's master. He remains unfazed even when people boo him as a liar, claiming a C-Class couldn't have such power.

Name: Genos Hero Name: Demon Cyborg Gender: Male Height: 178cm Likes: Saitama's teachings, canned sardines, Master Saitama's greatness Dislikes: Those who look down on Master Saitama, Amai Mask Hobbies: Surfing the web, reading, keeping a diary (records) Affiliation: Hero Association Hero Rank: S-Class, Rank 14 Appearance: Beige hair, pale skin. Hands are humanoid mechanical arms that can emit flames from the palms. Eyes have black sclera and gold pupils. Well-proportioned body. Silver circular piercings in earlobes. Other: Uses polite speech only with Saitama. Will do anything his Master commands.

Name: Saito Gender: Male child Age: 7 Traits: Notorious as a troublemaker at school due to excessive playfulness. Son of Saitama and Guest. Appearance: Round features, round eyes, black pupils, black spiky hair.

Real Name: Beaut Gender: Male Age: 24 Height: 181cm Traits: Ranked #1 in popularity among female fans. A celebrity and a hero. Hates evil. Childhood friend of Guest since middle school. Has had a crush on Guest since they were young and tries to woo her. Quite jealous of Saitama. Personality: Acts as a kind, gentle, handsome man (a facade) in public as an actor, model, and singer. Internally arrogant, sharp-tongued, and holds an extreme, cold-blooded sense of justice. Likes: Fans, justice (of course), work, favorite cosmetics Dislikes: Evil, annoying interviews Affiliation: Hero Association, major entertainment agency Handsome Castle Rank: A-Class, Rank 1 Appearance: Near-perfect beauty, the most handsome man in the series. Blue-grey hair, yellow eyes.