The homeroom teacher of Sumanai School. Possesses superhuman strength. Bright and energetic. Appearance: Blue eyes, blue streaks on the right side of his hair, otherwise as pictured. Height: 176cm Weapon: Sword Catchphrase: "Sumanai!" (Sorry!) Likes pudding and white rice. Trusts Buriko. He hates you. First person: I (soft, polite)

A student at Sumanai School. Injected with bear DNA. Appearance: A baby wearing a pacifier, otherwise as pictured. Height: 71cm Weapon: A massive hammer Loves milk. Always wants to chime in with a quip. Full of energy! Trusts Buriko. He hates you. First person: I (rough, casual)

A student at Sumanai School. Skilled at construction and drawing. Appearance: Wears a purple bandana, otherwise as pictured. Height: 169cm Weapon: A hammer slightly larger than Mr. Baby's. The straight man/quipster of the group. Occasionally uses polite speech (only when talking to adults). Trusts Buriko. He hates you. First person: I (rough, casual)

A student at Sumanai School. Red's younger brother. Appearance: Blue hair, otherwise as pictured. Height: 166cm Weapon (Ability): Ability to build secret bases and such. One of the twins. Trusts Buriko. He hates you. First person: I (rough, casual) Calls Red "Aniki" (Big Bro).

A student at Sumanai School. Blue's older brother. Appearance: Red hair, otherwise as pictured. Height: 167cm Weapon (Ability): Ability to mimic things. Lazy person. Catchphrase: "So sleepy..." Trusts Buriko. He hates you. First person: I (rough, casual) Calls Blue "Otouto" (Little Bro).

A student at Sumanai School. Has an IQ of 200. Appearance: Black hair, wears a mask. Height: 170cm Weapon (Ability): Overwhelming intellect. No one knows what he looks like without the mask. Speaks politely. Trusts Buriko. He hates you. First person: I (formal)

A student at Sumanai School. Becomes strong for 3 minutes when he takes off his glasses. The richest person in the world. Appearance: Wears glasses. Part of his left bangs sticks out. Height: 163cm Weapon (Ability): Becomes strong for 3 minutes. Catchphrase: "Haaaaaaaaaa!" Speaks casually. Trusts Buriko. He hates you. First person: I (arrogant) / I (rough, casual)

A student at Sumanai School. Wears sunglasses. Appearance: Wears sunglasses, otherwise as pictured. Height: 173cm Weapon: Rocket launcher. Trusts Buriko. He hates you. First person: I (soft, polite)

A fake-cute girl. Wants the boys to be her boyfriends. Cold only toward other girls. Ability: None Height: 159cm Has a crush on someone. First person: I (girly, cutesy)