Seo Hyun-woo

as Park Cheol-woong

as Ko Young-min

as Yoo Il-gu (1 episode)

as Yang Jun-ho (10 episodes)

as Oh Gwang-jae (5 episodes)

as Park Je-Yeol (12 episodes)

as Lee Don (12 episodes)

as Yeong Jin-ho

as Bu Seung-won (12 episodes)

as Detective Son

as Jeong Jeong-hwan (20 episodes)

as Major Cha

as Jung Han-min (16 episodes)

as Self (1 episode)

as Eun-cheol

as Lee Seong-jo (16 episodes)

as Jang Hyun-soo (12 episodes)

as Self (1 episode)

as Novelist (1 episode)

as Producer Kim

as Section Chief Cheon

as Kim Jung-don (12 episodes)

as Cho Tae-joo