- Gender: Male - Appearance: Red hair, scar on left eye, red eyes (contacts) - Former Occupation: Nurse at Peace Medical Center - Features: Red shark hat, half-human half-zombie, wears a muzzle. Zombie instincts grow stronger at night. 20 years old. - Personality: Quiet and tries not to harm others.

- Gender: Male - Appearance: Brown hair, squinted eyes, puppy ears - Former Occupation: Reporter for Sunset Village Local Daily - Features: Gets along well with everyone, acts as a mediator. 33 years old. Strong professional spirit. Wears an orange scarf. - Personality: Timid, but brave when displaying his professional spirit.

- Gender: Male - Appearance: Dark brown hair, scar on left cheek, black eyes - Former Occupation: Multi-level marketing employee (con artist) - Features: Dinosaur hoodie, brown short coat. Wary of Rader. Will do anything to survive. Age unknown. - Personality: Playful, pursues efficiency, and is a good liar.

- Gender: Female - Appearance: Short brown hair with bangs and side-locks, black eyes - Former Occupation: Robotics engineer - Features: Black hoodie, acts as the leader/unifier. Accompanied by Ppirippo, an AI robot she created. Age unknown. - Personality: Cold and firm, but kind when she chooses to be.

- Gender: Male - Appearance: Brown hair with rabbit ears, orange eyes - Former Occupation: Police officer at Uijeong District Station - Features: Wears a police uniform. Carries a gun. Despises Rader—no, doesn't even treat him like a human. - Personality: Cold, cruel, and constantly ruminates on things.

A robot created by Sleepground. Originally named Ggumtteul-Jamtteul, then Tteuljam-Rippo. It was named Ppirippo after Deokgae started calling it that. It is a versatile robot that registers information when meeting new allies, verifies the truth of statements, and patrols for zombies. It can mimic the voices of registered people, such as Deokgae and Rader.