Ryoo Seung-bum
Yoon Seok-woo
Go Joon-hee
Kim Yoo-mi / Weathercaster
Park Hae-il
RU-4 / In-myoung (voice)
Kim Kang-woo
Robot Repairman Park Do-won
Bae Doona
Park Min-seo
Bong Joon-ho
Lee Joon-ho
Jin Ji-hee
Young Park Min-seo
John D. Kim
Former NASA Researcher
Ma Dong-seok
High School Zombie
Kim Gyu-ri
Bodhisattva Hye-joo
Jo Yoon-hee
Ji-eun
Jung Woo
Joong-dong
Kim Moo-yul
Ji-ho
Yoon Se-a
Min-seo's Mother
Song Sae-byuk
Hwan
Lee Seung-joon
Dad
Kim Seo-hyung
Robot Scientist Min Yoo-ni
Song Young-chang
Co. President Kang
Choi Gwi-hwa
Removal Team
Ryu Seung-su
Announcer
Lee Young-eun
Announcer
Kim Roi-ha
Seok-woo's Father
Lee Kan-hee
Seok-woo's Mother
Hwang Hyo-eun
Seok-woo's Sister
Yoon Je-moon
Joo Je-moon
Kim Su-nam
Monk
Choi Deok-moon
Chief
Kim Kyung-ik
AD Notebook Moderator
Lee Bong-gyu
Senior Monk
Jung Jae-jin
Spiritual Leader
Choe Dae-Hun
Seg. Heavenly Creature - Monk