Im Sung-jae

as Du-chil

as Kang Ro-bin (8 episodes)

as Seo Dae-gang (1 episode)

as Young Ju-sang

as Ha Sang-ki (12 episodes)

as Self (3 episodes)

as Ra In-ho (8 episodes)

as Byung-gyu

as Go-tae

as Jeon I-man (16 episodes)

as Bong-sik

as Psyche (8 episodes)

as Choi Jeong-bae (12 episodes)

as Delivery Man

as Bae Min-ki (2 episodes)

as Sergeant Lee (6 episodes)

as Detective Cha

as First Sergeant Kim

as Security Command Investigator

as Jong-su

as Kim Min-sik (16 episodes)

as Detective Kim

as Jung-goo

as President Ma [Mobile funeral home boss] (2 episodes)