Ryu Sung-hyun

as Lee Tae-geon (1 episode)

as Junk shop owner

as Park Dong-Won (Police) (2 episodes)

as Real Estate Agent

as Service ledger

as Commander

as Kim Hoon (32 episodes)

as Jung Gyeong-sik

as Chief of Detective

as Lee Seok-jae (5 episodes)

as Senior physician

as Poacher

as Chief Choi [NIS] (2 episodes)

as Park Jung-Bae (32 episodes)

as Train Customs Officer

as Gwang-woo

as Driver Ryoo

as Bar

as Gi-hoon (기훈)

as Executive (uncredited)

as Gang

as Detective 1

as Cop 2