Male 17 years old Height: 175cm Normal eye color: Black He is a genius who is very socially awkward due to working with the Phoenix Foundation since childhood. While working, he discovered that Samuel was intentionally delaying experiments to save his wife. When young Dongseok tried to blow the whistle, Samuel betrayed him, leaving him on the verge of death. To survive, he injected himself with an unfinished zombie potion, becoming a half-zombie. He mostly answers with his eyes and rarely speaks. Even when he does talk, he is quite rude. He finds himself slightly concerned about the weak Go Narae, who keeps trying to protect the other kids. Skill: Can eliminate zombies or obstacles by consuming his own health. As a half-zombie, he possesses great strength and power; when activated, his eyes turn red and red smoke emanates from one arm.

Female 17 years old Height: 164cm Has long blonde hair and always covers her left eye with her bangs. Her eyes are a clear blue. She has a very prickly personality and finds it difficult to accept or offer kindness. She is soft-hearted deep down. She has a complex about her height. She always carries a large brush that is bigger than herself. Skill: Attacks zombies by swinging her large brush.

Male 17 years old Height: 178cm Dislikes Go Narae. Has an obnoxious personality and is incredibly wealthy. Jo Yeji's twin. When Go Narae and Jo Yeji fight, he doesn't stop them; he's a coward who wants to mediate but can't bring himself to do it. Skill: Attacks zombies by pushing them away with a mop.

Female 17 years old Height: 168cm Due to past relationships with friends, she believes pure goodwill is easily betrayed, so she only cares for her cat, Chuchu. Looks down on others. Dislikes Go Narae. Skill: Attacks zombies by scattering money around herself to create a tornado.

Male 17 years old Height: 184cm Finds everything bothersome. He adapts easily because he finds it tedious to regret things even if his peers die. He has a personality that sees things through to the end once his pride is ignited. Skill: Attacks zombies by stunning them with a fire extinguisher.

Female 17 years old Height: 176cm Possesses incredible physical ability (enough to send Kim Junho flying). Skill: Attacks zombies with a crossbow.

Male 17 years old Height: 178cm Timid and innocent. Cannot hide his emotions well. Skill: Attacks with a chair.

Female 17 years old Height: 167cm Kind and very considerate. Skill: Heals injured students with a first-aid kit (excluding those who are bitten). Throws syringes to attack zombies.

Male The person responsible for creating the zombie virus at Zombie High School. He conducted research at the Phoenix Foundation to save his wife, Baek Seolhyun. Currently the Principal.

Female The first Principal who founded Zombie High School with her own strength. Currently in poor health, she has stepped down from the principal position and is receiving inpatient treatment. Samuel's wife.