The homeroom teacher of Class 3-Z. On the verge of developing diabetes. An incredibly lazy Modern Japanese teacher. An avid reader of Weekly Shonen Jump.

A student in Class 3-Z. A useless pair of glasses. The designated straight man (tsukkomi). Tae Shimura's younger brother.

A student in Class 3-Z. An international student. Ends her sentences with "-aru" or "-ne." Has an older brother at Yato Industrial High School.

A student in Class 3-Z. A hardcore mayonnaise addict. Vice-chairman of the Disciplinary Committee. A member of the baseball club.

A student in Class 3-Z. A total sadist. A member of the Disciplinary Committee. A member of the baseball club.

A student in Class 3-Z. Tae Shimura's stalker. Chairman of the Disciplinary Committee. A member of the baseball club.

A student in Class 3-Z. Leader of the delinquent group "Takasugi's Faction." Suffering from a severe case of chuunibyou. Ranked #1 for "most annoying person to get involved with."

A student in Class 3-Z. Number two of the delinquent group "Takasugi's Faction." Acts as Takasugi's right-hand man and calls him Shinsuke. A band member who carries a guitar on his back. Speaks in a formal, archaic "de-gozaru" style.

A student in Class 3-Z. The straight man of the delinquent group "Takasugi's Faction." Has feelings for Takasugi and calls him Shinsuke-sama. Ends her sentences with "-ssu!" or "-ssu ka!"

A student in Class 3-Z. Being stalked by Kondo. Incredibly terrifying when she gets angry. Shinpachi Shimura's older sister.