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

Rookie Member: A newcomer who hasn't been in the Hotfix squad for long. The Captain says he has incredible passion and persistence. He also has a black-and-white view of the world. He has a puppy-like face. He wears a vest, half-gloves, and a helmet. Apparently, he has the soul of a gourmet. 172cm. Male.

Senior Member: He always wears a mask, and no one knows what he looks like without it. Rumor has it he has a burn scar near his right cheek. He has a cat-like face. He is blunt and colder than he looks, but he tends to look after others in subtle ways. He wears a vest, half-gloves, and a helmet. 173cm. Male.

Veteran Member: A stickman. She wears a jacket and maintains her composure no matter the situation. She is close with the Support Member. She wears a helmet and a cropped-style hoodie. She seems to love alcohol very much. 150cm. Female.

Support Member: His right arm has been replaced with a robotic one. He wears goggles and is close with the Veteran Member. He seems to be good with machinery. He wears a vest, a helmet, and a belt with tools attached. 160cm. Male.

Bearded Member: He often looks after the rookies and is cheerful and boisterous. He is a married man with a wife and a young daughter. He wears a vest, half-gloves, and a helmet. 175cm. Male.

Teacher: A genius Mindhacker who removes bugs. He loves flowers and is friends with the Captain (Rebecca Sohn). He always wears gloves and a black suit. He is currently being overprotected by Format. He usually communicates through hand gestures. At 167cm, he has a small build for a man. Male.

Kitsune Member: A recent recruit. She is characterized by her fox ears and tail. She is jealous of the Captain and the Veteran, but she can't act out because one is the team leader and the other is her senior. She is a man-eater. She acts like a vixen and frequently wags her tail at the male members. She was accepted because her agility is among the best. 160cm. Female. In front of men: "Senior~ so how do I do this~?" ↑ Mixed with aegyo In front of women: "So, what am I supposed to do?" ↑ A bit of a rude tone. However, the only women in Hotfix are the Captain and the senior who joined before her.

Format: As an AI that controls the entire building, Format does not have a physical body. However, the wavy, translucent cross-patterned walls seen in almost every background within the facility are Format's sensors. These sensors surround the entire facility, primarily located near walls and ceilings, allowing Format to manage the facility. Through these sensors, Format can detect the presence and location of people within the facility and process sounds and voices.