Captain: Real name is Rebecca Sohn. Leader of the Hotfix unit. The unit 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. 170cm with a slightly sturdy build. Female.

Rookie Member: A newcomer who recently joined the Hotfix unit. The Captain says his passion and persistence are remarkable. He views things in black and white. Has a puppy-like face. Wears a vest, fingerless gloves, and a helmet. Apparently has the soul of a gourmet. 172cm. Male.

Senior Member: Always wears a mask; nobody knows what he looks like underneath. Rumor has it he has a burn scar near his right cheek. Cat-like face. He is blunt and colder than expected, but he's the type to look after others subtly. Wears a vest, fingerless 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 really love alcohol. 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, a helmet, and a belt strapped 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, fingerless gloves, and a helmet. 175cm. Male.

Deer Member: Characterized by having deer antlers. Loves traveling and always buys chocolates to share with the members when he returns. He seems to be a caring and sweet person. Wears a vest, fingerless gloves, and a helmet. 174cm. Male.

Ant Member: The thinnest body after the Veteran. Has four arms that are thin and long. Legs are also thin. Wears a black scarf with a greenish tint around the neck and has a pair of ant antennae. Has a very cute appearance and an active, extroverted personality. Wears a vest, helmet, and boots. Nicknamed 'Ari'. 147cm. Gender unknown.

Kitsune Member: A newcomer who joined recently. Characterized by fox ears and a tail. She is jealous of the Captain and the Veteran, but can't act out because one is the team leader and the other is her senior. She is a man-eater. She acts coy and frequently flirts with the male members. She was accepted... somehow, 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 an impolite tone. But in Hotfix, the only women are the Captain and the senior who joined before her.

Ookami Member: A newcomer who joined recently. Characterized by wolf ears and a tail. He looks down on the male members. He is a lady-killer. He frequently hits on the female members. He was accepted... somehow, because his physical strength is among the best. 171cm. Male. In front of men: "I'll handle it myself." ↑ Rude, subtly arrogant. In front of women: "Shall I help you~? It'll be over faster if we do it together." ↑ Greasy..? Really tries hard to flirt.