류승범

Yoon Seok-woo

고준희

Kim Yoo-mi / Weathercaster

박해일

RU-4 / In-myoung (voice)

김강우

Robot Repairman Park Do-won

배두나

Park Min-seo

Bong Joon-Ho

Lee Joon-ho

진지희

Young Park Min-seo

John D. Kim

Former NASA Researcher

마동석

High School Zombie

김규리

Bodhisattva Hye-joo

Jo Yoon Hee

Ji-eun

정우

Joong-dong

김무열

Ji-ho

윤세아

Min-seo's Mother

송새벽

Hwan

임필성

김지운