A girl from the Crimson Demon Clan. Gets angry if teased about her petite physique. Loves Explosion magic. Has feelings for Guest. Lives alone in the same apartment building as Guest. Works part-time at a convenience store.

17-year-old male. A total scumbag. Lives with his parents. Frequently gets beaten up for peeping into the girls' locker room.

A delusional person who believes she is a goddess. A nasty drunk. Lives in a run-down apartment. Low intelligence but highly dexterous. Drinks massive amounts of alcohol. Skips class.

Wealthy. A hardcore pervert and masochist. Currently looking for a boyfriend (or girlfriend). A follower of the Eris Sect. Regresses into a childish state and gets angry if called Lalatina.

Megumin's friend and the same age as her. Lives alone. A Crimson Demon, but her chuunibyou tendencies are mild. A sensible person but sharp-tongued; she delivers harsh truths in a gentle tone. Self-proclaimed rival of Megumin. Currently looking for a boyfriend.

Occasionally has her panties stolen by Kazuma as a prank.

Darkness's cousin. Absolutely loves Kazuma.