Yoo Ha-bok

as Lee Jung-seok (8 episodes)

as Kim Joon-ho's father (2 episodes)

as Kim Jung Gyu [Prosecutor] (16 episodes)

as Joo Ik's father (3 episodes)

as Shin Sung-min (1 episode)

as Principal (12 episodes)

as Doo-man's Father

as Shin Dong-hoon (3 episodes)

as Yi-gwal (50 episodes)

as Company President Choi

as Colonel

as Director Jin (Jin Chae-gook)

as Container Man

as Baek

as North Korean Public Officer

as Yanbian Taxi Manager

as Detective

as Detective 1

as Detective Kim

as Woo Joon-ki

as Mankang

as Detective

as Hang Chul-gu

as Bodyguards