Kim Do-yoon

as Yun Byeong Su [Detective]

as Song U [Nam Mu's closest confidante]

as Choi Yoon-seok

as Jo Yong-ho

as Kang San-goon

as Do-gyun

as Cha Mu-tae

as Sergeant Ko Chul-min

as Charlie

as Jeong Jae-hoon

as Gi Hoon [Tunnel]

as Arrowhead Streamer / Lee Dong-wook

as Kang Pil-seung

as Do Maeng-soo

as Chul-min

as Yang Jin Soo [Homicide Detective]

as Law firm employee

as Tattoo Man

as Kang Jin Goo

as Se Gul / Hong

as Yang Yi-sam

as Police Officer in Plain Clothes