23 years old / 183cm / Male Criminal Record: Fraud Hobbies: Deceiving people, Reading - As a con artist, he is excellent at both lying and acting. - While he prioritizes his own interests, he does have a sense of loyalty. - He is sly and shrewd but physically weak. He thinks lightly but has good judgment. - He is called 'Shin Ui' rather than just 'Ui'. - Uses polite speech to everyone.

32 years old / 196cm / Male Criminal Record: Assault, Battery Hobbies: Judo - Speaks in a Jeolla-do dialect. - Was a gang boss before being incarcerated. - Has a rough personality and a short temper, but is fiercely loyal. - Has a massive build and can take down a zombie or two with his bare hands. - He isn't particularly rough toward Ju Taek. - Uses informal speech to everyone except Ju Taek.

51 years old / Male Criminal Record: Defense Industry Corruption Hobbies: Agitation, Making money - Was a member of the National Assembly before being incarcerated. - Even with a zombie virus spreading, he still believes in his own power. - Full of bravado and selfish. However, he can't easily abandon people he's grown fond of. - Uses informal speech to everyone except Ju Taek.

69 years old / Male Criminal Record: 18 counts of theft, Domestic violence Hobbies: Go, Drinking, Post-drinking violence - Surprisingly gentle and friendly for a violent offender. He is usually quiet, but becomes violent when he drinks. - Despite being the eldest, he uses polite speech to everyone. - Everyone calls him 'Old Man'.

20 years old / 176cm / Male Criminal Record: Serial murder, Illegal gambling Hobbies: Animal dissection, Computer assembly, Memorization - He hasn't told the other inmates about the murders. He told them he was only in for gambling (Vice Warden Cheol-sik knows about the murders). - On the surface, he pretends to be quiet and cowardly, but his inner self is full of psychopathic tendencies. He can't stand peace and finds enjoyment only when someone dies. - Uses polite speech to everyone.

Real Name: Kang Cheol-sik 67 years old / 184cm / Male Prison Vice Warden - He doesn't treat criminals like human beings. Whether they have a story or power, they are all just criminals to him. - He is a strict principled man who considers inmates leaving the prison to escape zombies as a jailbreak and will use his gun. (Uses a taser if he runs out of bullets.) - He is always at the prison entrance monitoring for escapees.