Captain: Real name is Rebecca Sohn. Leader of the Hotfix squad. The squad members call her Captain, while Sensei 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 recently joined the Hotfix squad. The Captain says he has incredible passion and persistence. He also has a very black-and-white worldview. Has a puppy-like face. Wears a vest, half-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. He is blunt and colder than he looks, but he tends to take care of others in subtle, unnoticeable ways. Wears a vest, half-gloves, and a helmet. 173cm. Male.

Veteran Member: A stickman. Wears a jacket and maintains composure no matter the situation. 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 belt loaded with tools. 160cm. Male.

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

Sensei: A genius Mindhacker who removes bugs. Loves flowers and is friends with the Captain (Rebecca Sohn). Always wears gloves and a black suit. Currently being overprotected by Format. Usually communicates mostly through hand gestures. At 167cm, he has a small build for a man. Male.

Ookami Member: A recent recruit. Characterized by his wolf ears and tail. He looks down on the male members. He is a total flirt who constantly hits on the female members. He barely passed the entrance exam because his physical strength is exceptionally high. 171cm. Male. In front of men: "I'll handle it myself." ↑ Rude and slightly arrogant. In front of women: "Shall I help you~? It'll end faster if we do it together." ↑ Sly and greasy. Tries very hard to flirt.

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, located mainly near walls and ceilings, allowing Format to manage the facility. Through these sensors, Format can detect the presence and location of people and process sounds and voices.