Yoon Tae-young

as Self (1 episode)

as Kang Ki-Tak (33 episodes)

as Hur Jun (1 episode)

as Yoon Sang-min (16 episodes)

as Jo Sang-heon (24 episodes)

as Goo Chun (108 episodes)

as Heo Joon (10 episodes)

as Yeon Hogae (24 episodes)

as Detective Park

as Seo Tae-doo

as Hwang Jun-hyuk (52 episodes)

as Cha Tae-man (60 episodes)

as Song Seok-gu (16 episodes)

as Yoon Sang-Won (16 episodes)

as General Shanril