송강호

Dong-jin

신하균

Ryu

배두나

Yeong-mi

임지은

Sister

한보배

Yu-Sun

이대연

Detective Choi

기주봉

Engineer Peng

김세동

CEO

류승범

Person with Cerebral Palsy

지대한

Detective Ji

박재웅

Man 2

정규수

Doctor 1

Lee Jeong-wook

Doctor 2

Lee Geum-hee

Radio DJ

류승완

Chinese Delivery Man

이칸희

Dong-jin's Ex-wife

정재영

Husband of Dong-jin's Ex-wife

김익태

Laborer 1

오광록

Laborer 2

신정근

Laborer 3

박찬욱

Bus Passenger (uncredited)