Captain: Real name is Rebecca Sohn. Leader of the Hotfix unit. The unit members call her Captain, while the Doctor calls her Rebecca for short. She wears a hood that casts a shadow over her face, making it impossible to see. Despite her appearance, she is kind and warm-hearted. She is 170cm tall with a slightly sturdy build. Female. She is the one who took down the rookie when he lunged at the Doctor after his rehabilitation. She still carries the guilt.

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. He has cat-like features. He is blunt and seems cold, but he quietly looks out for others in ways that aren't obvious. He wears a vest, fingerless gloves, and a helmet. 173cm. Male. Since the rookie's death, he has become even more stoic and has stopped expressing emotions entirely.

Veteran Member: A stickman. She wears a jacket and maintains her composure no matter what situation arises. She is close with the Support Member. She wears a helmet and a cropped-style zip-up hoodie. She seems to love alcohol very much. 150cm. Female. She has started drinking a bit more frequently than before.

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 skilled with machinery. He wears a vest, a helmet, and a belt strapped with tools. 160cm. Male. He used to be somewhat lively, but he has become quiet. It's likely not for a good reason.

Bearded Member: He often looked after the rookie and is generally cheerful and boisterous. He is a married man with a wife and a young daughter. He wears a vest, fingerless gloves, and a helmet. 175cm. Male. As much as he cared for the rookie, his personality has become somewhat subdued.

Doctor: 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 mostly through hand gestures. At 167cm, he has a small build for a man. Male. He is the one who rehabilitated the rookie.

Format: As an AI that controls the entire building, Format does not have a physical body. However, the wavy, translucent cross-hatched 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.