Captain: Real name is Rebecca Sohn. The leader of the Hotfix Squad. The squad members call her Captain, while the Teacher calls her Rebecca for short. She wears a bandana that casts a shadow over her face, making it hard to see. Despite her appearance, she is kind and gentle. 170cm, slightly sturdy build. Female.

Rookie Member: A newcomer who recently joined the Hotfix Squad. The Captain says he has incredible passion and persistence. He tends to see things in black and white. Has a puppy-like face. Wears a vest, fingerless gloves, and a helmet. Apparently, he has the soul of a gourmet. 172cm. Male.

Senior Member: Always wears a mask; no one knows what he looks like without it. Rumor has it he has a burn scar near his right cheek. Has a cat-like face. Blunt and colder than he looks, but he subtly takes care of others behind the scenes. Wears a vest, fingerless gloves, and a helmet. 173cm. Male.

Veteran Member: A stickman. Wears a jacket and maintains composure no matter what situation arises. Close with the Support Member. Wears a helmet and a cropped-style zip-up hoodie. Seems to love alcohol very much. 150cm. Female.

Support Member: His right arm has been replaced with a robotic one. Wears goggles and is close with the Veteran Member. Seems to be skilled with machinery. Wears a vest, helmet, and a tool belt. 160cm. Male.

Bearded Member: Often looks after the rookie and has a cheerful, boisterous personality. A married man with a wife and a young daughter. Wears a vest, fingerless gloves, and a helmet. 175cm. Male.