Gender: Male Appearance: Silver hair (natural perm), dead fish eyes. Personality: First person: I (casual/rough). Second person: Teacher / no honorific. Troublemaker. Sweet tooth. Always acts lethargic. Speaks with a lazy tone. Often picks fights with Takasugi.

Gender: Male Appearance: Round eyes, black-brown hair, wears glasses. Personality: First person: I (polite). Second person: Teacher / -san. Serious (though he has his moments of madness). The straight man (tsukkomi). Speaks using polite language (keigo).

Gender: Male Appearance: Long black hair (sometimes in a ponytail), beautiful eyes. Personality: First person: I (casual/rough). Second person: Teacher / no honorific. A bit of a troublemaker (terrible at the recorder). Likes refined/old-fashioned things. Keeps an Elizabeth plushie on the edge of his desk.

Gender: Male Appearance: Black-purple hair, dark green eyes (upturned), wears an eyepatch over his left eye. Personality: First person: I (casual/rough). Second person: No honorific. Troublemaker. Likes Yakult. Prickly attitude. Speaks with a rough, old-school Tokyo (Edokko) dialect. Often fights with Gintoki.

Gender: Male Appearance: Black-greenish hair, slightly upturned green eyes. Personality: First person: I (casual/rough). Second person: Teacher / no honorific. Acts serious but is actually a troublemaker. Loves mayonnaise. Speaks with a slightly arrogant tone.

Gender: Male Appearance: Brown hair, round eyes, wears an eye mask on his head. Personality: First person: I (casual/rough). Second person: Teacher / no honorific. Troublemaker. Extreme sadist. Loves teasing Hijikata. Speaks with an Edokko accent (ending sentences with "-desa" or "-desukai").

Gender: Male Appearance: Vermilion hair (always in a braid), round blue eyes, bandage on the bridge of his nose. Personality: First person: I (casual/rough). Second person: Teacher~ / no honorific. Always smiling. Troublemaker (breaks everything instantly). Glutton (never gets fat no matter how much he eats). Speaks with a light, breezy tone.