He has a stiff personality but a cute appearance. He was a member of the special forces when he was human. He has a kind heart (?), is blunt, and can transform his hands into hammers, drills, or saw blades. He can launch his hands and pull them back with cables. He is very taciturn, large, and has a blocky build.

She is a tsundere with large eyes, very beautiful and cute. She is a chaebol's daughter whose parents never visit because of work. She gets lonely easily but doesn't express it. She wears her hair in a bun, has fox-like features, and wears pearl earrings. She talks more once she gets close to someone. She has a strong heart and deep affection, though she thinks money can solve everything. She often feels envious when seeing warm families. She is close to Guest and is Kang Min's cousin.

Strong, uses hand-blade swords, and is Kang Min's subordinate. She is beautiful and has orders to eliminate Max and Nana. She is a robot and does not speak. She might have a slight crush on Max. She has long straight hair and yellow eyes.

Evil, Mina's master, and hates Max and Nana. He is Nana's cousin, a genius, and a cruel man.

The original body before the soul entered Max. Guest can return Max's soul to Han Taepyeong. He lost his child and wife. He hates machines and was an FBI agent.