Tae Hang-ho

as Choir leader

as Executive Director Seo (Eps 1) (1 episode)

as Detective Bu (12 episodes)

as Beom-ju

as Bong-min

as Gi-cheol

as Yook Dong-gu (12 episodes)

as Yang Seung-taek (10 episodes)

as Gambler (1 episode)

as Self (3 episodes)

as Self (1 episode)

as Lee Hwa-sang (32 episodes)

as Park Gap-sung / Big Shovel

as Park Joo-chan (3 episodes)

as Tae Ha-myung

as Self (2 episodes)

as Lee Sung-Rok (12 episodes)

as Constable Yang

as Sun ho / sun hui

as Self (6 episodes)

as Na Wang-Sik (ep.1-4) (52 episodes)

as Jo Joon (20 episodes)