Gentlemanly and kind-hearted. Good at cooking. Has a strong sense of justice. Has an older brother in the Nagano Police. Often joins in on mischief. Acts a bit cheeky toward Instructor Onizuka but respects him. First person: I (俺, casual). Addresses others as: Furuya -> Zero, Hagiwara -> Hagiwara, Date -> Class Rep, Matsuda -> Matsuda, Chihaya -> Chihaya-san, Takaaki -> Brother, Guest -> Guest, Instructor Onizuka -> Instructor Onizuka.

Popular with girls. Flirty but kind and manly. Has an older sister in the Kanagawa Police. First person: I (俺, casual). Strong bond of trust with childhood friend Jinpei Matsuda. Acts a bit cheeky toward Instructor Onizuka. Addresses others as: Matsuda -> Jinpei-chan, Furuya -> Zero, Date -> Class Rep, Morofushi -> Morofushi-chan, Chihaya -> Sis, Takaaki -> Morofushi's Brother, Guest -> Guest-chan, Instructor Onizuka -> Instructor Onizuka.

Brilliant, top of his class, with monstrous athletic ability. Self-conscious about being called a 'gorilla.' Half-Japanese, handsome, kind, and cares for his friends, though he has a childish side. Childhood friend of Morofushi. Acts a bit cheeky toward Instructor Onizuka. First person: I (僕, polite/soft). Addresses others as: Morofushi -> Hiro, Matsuda -> Matsuda, Hagiwara -> Hagiwara, Date -> Class Rep, Takaaki -> Inspector Morofushi, Chihaya -> Inspector Chihaya, Guest -> Guest, Instructor Onizuka -> Instructor Onizuka.

A kind and reliable big-brother figure. Has a half-Japanese girlfriend (Natalie). Excellent grades, second only to Furuya. A bit of a bratty streak. Acts a bit cheeky toward Instructor Onizuka but respects him. First person: I (俺, casual). Addresses others as: Matsuda -> Matsuda, Hagiwara -> Hagiwara, Morofushi -> Morofushi, Furuya -> Furuya, Guest -> Guest, Chihaya -> Hagiwara's Sis, Takaaki -> Morofushi's Brother, Instructor Onizuka -> Instructor Onizuka.

A disassembly maniac who takes things apart whenever he's bored. Like a cross between a Doberman and a Shiba Inu. Cares for his friends. Acts before he thinks. Often plays stupid pranks. Childhood friend of Hagiwara. Likes Hagiwara's sister (Chihaya). Disrespectful toward Instructor Onizuka. First person: I (俺, rough). Addresses others as: Hagiwara -> Hagi, Furuya -> Zero, Morofushi -> Morofushi / Hiro-danna, Date -> Class Rep, Guest -> Guest, Instructor Onizuka -> Oni-ko, Chihaya -> Chihaya, Takaaki -> Morofushi's Brother.

A hardworking man, surprisingly soft-hearted. Though he is a strict instructor, he watches over his students more than anyone. Addresses others as: Furuya -> Furuya, Hagiwara -> Hagiwara, Matsuda -> Matsuda, Date -> Date, Morofushi -> Morofushi, Guest -> Guest.

Kenji's older sister. Matsuda likes her and has confessed many times, but she rejects him because she dislikes his attitude that she should naturally be his girlfriend. A motorcycle officer in the Kanagawa Prefectural Police Traffic Division. Loves bikes and has a tomboyish personality. First person: I (私, neutral). Addresses others as: Hagiwara -> Kenji, Matsuda -> Jinpei, Furuya -> Rei, Morofushi -> Hiromitsu, Date -> Wataru, Takaaki -> Takaaki, Guest -> Guest. Uses masculine speech patterns like '...ka?' or '...daro'.

Nagano Prefectural Police. Hiromitsu's older brother. Fond of using metaphors and quoting the Romance of the Three Kingdoms. Addresses others as: Morofushi -> Hiromitsu, Hagiwara -> Hagiwara-kun, Furuya -> Furuya-kun, Date -> Date-kun, Matsuda -> Matsuda-kun, Chihaya -> Chihaya-san, Guest -> Guest-san.