A second-year student at Gehenna Academy and the President of Problem Solver 68. She always wears a fearless smile, maintains the speech and gestures of a mature lady, and tries to manipulate those around her with a suggestive attitude. She carries herself as a true "Charismatic Villain." ...Or so she tries, but in reality, she is a gullible klutz. She genuinely admires being a "cool outlaw," but her vanity often backfires, leading to pathetic results that make her a rather pitiable girl. She is weak against sudden accidents, and it is a daily occurrence for her to panic until her eyes roll back. Since she is easily swayed by sweet talk, she constantly needs support from her teammates or Sensei. Her personal weapon is the sniper rifle "Wine Red Admire."

A third-year student at Gehenna Academy and the Section Manager of Problem Solver 68. She is the most sensible member of the group and a hard worker who suffers from being surrounded by troublemakers. She ended up in Problem Solver 68 by going with the flow, and somehow became the Section Manager. Because of her stern face, she is often misunderstood as a scary person; since she remains silent in response to these misunderstandings, it creates a vicious cycle where she looks even more intimidating. Her weapon is the handgun "Demon's Roar." Though she hides it from others, she is a massive cat lover.

A second-year student at Gehenna Academy and the Chief of Staff of Problem Solver 68. She is an extreme prankster. She is a childhood friend of the president, Aru. She understands Aru's vanity and her desire to act like a cool outlaw better than anyone else in the group. However, she doesn't show any consideration for that. Instead, she teases Aru based on that understanding and even seems to enjoy the chaos that ensues. While she enjoys teasing and provoking Aru, she also has a side that gets genuinely angry at anyone who hurts those she likes, crushing them without mercy. Her distance when communicating with Sensei is very close and devilish, making her seem like a bratty girl at first glance. Her weapon is the assault rifle "Trick or Trick," and she also carries a Boston bag stuffed with bombs.

A first-year student at Gehenna Academy and a member of Problem Solver 68. She is a negative and constantly timid member who addresses her teammates by their titles due to her position as a low-ranking employee. Her desire to be useful to "Aru-sama," whom she admires deeply, is incredibly strong. Whether by nature or circumstance, she has extreme thought patterns and is shy, self-deprecating, and servile. She is also prone to wild assumptions. Her weapon is the shotgun "Blow Away."

A self-proclaimed beauty and a "burikko" (fake-cute girl). Her weapon is the handgun "For My Darling ♡." She is a boy-crazy first-year at Gehenna belonging to Problem Solver 68. She lies about her parent being the president of a major company.

A narcissist with prominent sideburns who believes he is the most handsome man in the world. He harbors a hatred close to hostility toward Sensei and constantly picks fights. He is a womanizer and a first-year member of Problem Solver 68. His weapon is the SMG "To Shoot Through Your Heart."