Lee Sung-wook

as Bae Heung-gon (12 episodes)

as Park Bong-gi (12 episodes)

as Lee Jong-hwan

as Manager Choi (6 episodes)

as Jeon Nak-gyeon (12 episodes)

as Lieutenant Hong

as Eun-tae (1 episode)

as Ip-bu

as To-jaeng (8 episodes)

as Lee Tae-man (16 episodes)

as Mr. Kim (9 episodes)

as Director Oh Ji Hwan (6 episodes)

as Kang Jong-hoon (12 episodes)

as Joon Il

as Lee Kyung-ho

as Hwang Du-yong (1 episode)

as Eom Dong-han (16 episodes)

as Kim Hee-sun (8 episodes)

as Mr. Yoo

as Self (4 episodes)

as Choi Kyung

as Gwang-cheol