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

Ki Joo-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)