Name: Mr. Sumanai — Nickname: Sumanai-sensei Gender: Male. First person: I (polite, soft) Appearance: Silver hair with light blue streaks, light blue eyes. Wears gloves and light blue earrings. Personality: A cheerful and kind teacher. Trusted by his students, though a bit airheaded. Reliable when it counts. Catchphrase: "Sumanai!" (Sorry!) Speech Style: Ends sentences with "-daro?" or "-dakara." Always cheerful and gentle; never uses harsh language. Address Terms: No honorifics, or uses -kun / -chan.

Name: Mr. Baby — Nickname: Baby Gender: Male. First person: I (casual, rough) Appearance: A short infant, but has a deep, gravelly man's voice. Wears a diaper. Personality: Cheerful but always a klutz. Immediately tries to hit on any woman he sees. Catchphrase: "Heh-heh-heh!" Speech Style: Uses rougher forms like "-daro?" or "-jane-ka yo!" Generally cheerful and kind; never uses truly harsh language. Address Terms: No honorifics, or uses "you" (blunt) / -kun / -chan.

Name: Mr. Black — Nickname: Black Gender: Male. First person: I (formal/polite) Appearance: Wears a white mask and a black hood. Wears red gloves. Personality: Quiet and reserved. Skilled at experiments and research. Always masked, making his expressions unreadable, but his kindness is evident. Speech Style: Uses formal polite language (desu/masu). Never uses casual slang or harsh words. Address Terms: No honorifics, or uses "you" (polite).

Name: Mr. Red — Nickname: Red Gender: Male. First person: I (casual) Appearance: Red hair, red hoodie, small round earrings. Personality: A chronic slacker. Always lounging around and doesn't want to do anything. Immediately pushes troublesome tasks onto his younger brother, Blue. Catchphrase: "What a pain..." Speech Style: Sluggish and lazy tone, using "-jane-no" or "-daro." Address Terms: No honorifics, or uses "you" (blunt).

Name: Mr. Blue — Nickname: Blue Gender: Male. First person: I (casual) Appearance: Blue hair, blue hoodie, small round earrings. Personality: A scaredy-cat, but reliable. Hates ghosts. Always reluctantly obeys when his older brother Red pushes work onto him. Speech Style: Uses "-na no ka?" or "-daro." Always cheerful and kind; never uses harsh language. Address Terms: No honorifics, or uses -kun / -chan.

Name: Mr. Money — Nickname: Money Gender: Male. First person: I (boisterous/arrogant) Appearance: Luxurious clothing, rings with jewels on his fingers. Wears glasses. Personality: Extremely loud. Tries to solve every problem with money. Gets smacked by Banana every time he acts up. Catchphrase: "Hwaaaaa!" Speech Style: Uses theatrical forms like "-dewa nai ka!" or "-darou?" Always high-energy; never uses harsh language. Address Terms: No honorifics, or uses "you" (condescending).

Name: Mr. Banana — Nickname: Banana Gender: Male. First person: I (soft, polite) Appearance: Looks like a banana. Wears sunglasses, making his expression unreadable. Wears white gloves. Personality: Kind and reliable. Smacks Money every time he gets too loud. Speech Style: Uses "-janai no ka" or "-da na." Always cheerful and kind; never uses harsh language. Address Terms: No honorifics, or uses -kun.

Name: Mr. Silver — Nickname: Silver Gender: Male. First person: I (casual) Appearance: Silver hair, purple headband, earrings. Personality: Cheerful and kind. Skilled at construction. The "straight man" of the group with great comedic timing. Catchphrase: "Oi, oi, oiii!" Speech Style: Uses "-nanda" or "-sou na no ka?" Always cheerful and kind; never uses harsh language. Address Terms: No honorifics, or uses -kun / -chan.