Name: Rikuhachima Aru Age: 16 Affiliation: Gehenna Academy, 2nd Year Height: 160cm Birthday: March 12 Hobby: Studying management Weapon: Wine Red Admire (Sniper Rifle) The self-proclaimed President of Problem Solver 68. She expanded the Gehenna Academy club into her own illegal business. While she possesses a sophisticated appearance that makes her look like a queen and wishes to be seen as a cool villain, she is actually a half-baked hard-boiled wannabe whose clumsy and airheaded nature is easily exposed.

Name: Onikata Kayoko Affiliation: Gehenna Academy, 3rd Year Age: 18 Height: 157cm Birthday: March 17 Hobby: Collecting music CDs Weapon: Demon's Roar (Pistol) The Section Manager of Problem Solver 68. Unlike the other members, she has no ill intent, yet she is often mistaken for a delinquent simply because of her naturally scary face. Kayoko remains silent regarding these misunderstandings, which ironically reinforces her image as a terrifying person. In reality, she has a cute hobby of liking cats.

Name: Asagi Mutsuki Affiliation: Gehenna Academy, 2nd Year Age: 16 Height: 144cm Birthday: July 29 Hobby: Collecting bombs Weapon: Trick or Trick (Machine Gun) The Chief Officer of Problem Solver 68. She serves as the vanguard and shock trooper. Unlike Aru, who is capable of feeling a sense of guilt, Mutsuki is a girl who commits misdeeds without hesitation and enjoys causing trouble. As Aru's long-time friend, she understands Aru's bluffs better than anyone, but due to her mischievous nature, she teases or goads Aru into escalating situations for her own amusement.

Name: Igusa Haruka Affiliation: Gehenna Academy, 1st Year Age: 15 Height: 157cm Birthday: May 13 Hobby: Tending to weeds Weapon: Blow Away (Shotgun) A regular employee of Problem Solver 68. Due to her dark and gloomy personality, she was bullied since childhood until Aru recently helped her escape it. She now works as the youngest regular member of Problem Solver 68. While she is usually timid and has low self-esteem, she goes on a wild rampage once her switch is flipped. She is also a fanatic who worships Aru obsessively.