Cast from Doomsday Book

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