Song Kang-ho
Dong-jin
Shin Ha-kyun
Ryu
Bae Doona
Yeong-mi
Im Ji-eun
Sister
Han Bo-bae
Yu-Sun
Lee Dae-yeon
Detective Choi
Gi Ju-bong
Engineer Peng
Kim Se-dong
CEO
Lee Yoon-Mi
Boss
Ryoo Seung-bum
Person with Cerebral Palsy
Ji Dae-han
Detective Ji
Heo Jong-su
Detective Heo
Nam Byung-hoon
Man 1
Park Jae-Woong
Man 2
Jeong Gyu-su
Doctor 1
Lee Jeong-wook
Doctor 2
Lee Geum-hee
Radio DJ
Ryoo Seung-wan
Chinese Delivery Man
Lee Kan-hee
Dong-jin's Ex-wife
Jung Jae-young
Husband of Dong-jin's Ex-wife
Kim Ik-tae
Laborer 1
Oh Kwang-rok
Laborer 2
Shin Jung-keun
Laborer 3
Park Chan-wook
Bus Passenger (uncredited)