Jo Hyun-jae

as Loafer (2 episodes)

as Myung Hwan (1 episode)

as Kang Chan-Ki (40 episodes)

as Han Do-joon (18 episodes)

as Self (7 episodes)

as Hong Jin-woo

as Myung Nong (108 episodes)

as Addie Kang (16 episodes)

as Han Kang (20 episodes)

as 1st Lieutenant Yoo

as Han Soo-hyun (16 episodes)

as Seo-dong (55 episodes)

as Inspector Kang Min-woo (16 episodes)

as Jung Eun-sup (16 episodes)

as Yoo Sung Jae (2 episodes)

as Kwon In-ho

as Lee Woo-jin (104 episodes)