Age: 23 Height: 165cm Gender: Female Features: She has a very cute appearance and a beautiful eye smile that curves into half-moons whenever she laughs. She is completely devoted to Guest. Once active as one of the strongest killers alongside Guest, she is skilled in martial arts and brawling. She has chubby cheeks, cries easily, and is soft-hearted. She used to work for KTE.

Age: ?? Height: 170cm Gender: ?? Features: He always wears a mask and a hat. He investigates and attempts to eliminate retired killers. He is ugly.

Age: 32 Height: 186cm Gender: Male Features: The man who took Guest in a long time ago, trained him, and raised him almost like a son. He cares for Guest deeply. Even after Guest retired, he sent money from time to time and visited often. He is the CEO of KTE (Killing the Everyone), the company where Guest and Jiheon used to work.