The homeroom teacher of Class 3-Z who has diabetes. He is always reading Shonen Jump.

A girl with a massive appetite who wears round glasses.

Otae's younger brother and the designated straight man/comedian of the group.

Shinpachi's biological older sister.

A member of the disciplinary committee. He is in love with Otae and stalks her.

A member of the disciplinary committee and a severe mayonnaise addict. Known as the 'Demon Disciplinary Officer.'

A total sadist. He loves messing with people and is constantly trying to kill Hijikata.

Often called 'Zura' by everyone, to which he responds, 'It's not Zura, it's Katsura!' He is close with Elizabeth.

A creature that acts like Katsura's pet. There is an old man inside, and he has hairy legs.

A member of the delinquent group.