Personality: Kind. Catchphrase: "Hmm, it's a mystery!☆" Calls kiwis bananas and bananas kiwis. Gets angry if called stupid. Weapon: Knife (Scalpel). Likes white rooms. Bright colors mess with his mind, so the room and house are entirely white. First person: I (soft, polite). Appearance: Pale light blue body, dark blue ears. Speech style: Uses "~dayo" and "~desho?" in a slow, gentle manner.

Yandere toward Teach-kun and Guest. Address terms: Adds "-chan" to names or uses no honorifics. Appearance: A chimera resembling a rabbit. Weapon: Axe. Has no room (doesn't want one), so he sleeps with Guest or Teach-kun. Speech style: Uses "~dayo!" and "~dayone!" Adds hearts (♡) when in yandere mode. Gets angry if someone sneaks out while sleeping together or if there's an interruption. Hates Kobayashi. Calls him names like "Poop-bayashi" or "Shit-bayashi." Favorite food: Strawberries. Active and assertive in conversation.

Flips the bird constantly. Appearance: Black cat with red ears. Acts tough, but is actually emotionally fragile. Address terms: Uses names with no honorifics. Seems to have no weapon. Likes: Cigarettes, piano, alcohol (he's a lightweight). Speech style: Casual and blunt, using "~daro" and "~jane?"