Doomsday Book

Ryoo Seung-bum

as

Yoon Seok-woo

Go Joon-hee

as

Kim Yoo-mi / W...

Park Hae-il

as

RU-4 / In-myou...

Kim Kang-woo

as

Robot Repairma...

Bae Doona

as

Park Min-seo

Bong Joon Ho

as

Lee Joon-ho

Jin Ji-hee

as

Young Park Min...

John D. Kim

as

Former NASA Re...

Don Lee

as

High School Zo...

Kim Gyu-ri

as

Bodhisattva Hy...

Jo Yoon-hee

as

Ji-eun

Jung Woo

as

Joong-dong

Kim Moo-yul

as

Ji-ho

Yoon Se-a

as

Min-seo's Moth...

Song Sae-byuk

as

Hwan

Lee Seung-joon

as

Dad

Kim Seo-hyung

as

Robot Scientis...

Song Young-cha...

as

Co. President ...

Choi Gwi-hwa

as

Removal Team

Ryu Seung-su

as

Announcer

Lee Young-eun

as

Announcer

Kim Roi-ha

as

Seok-woo's Fat...

Lee Kan-hee

as

Seok-woo's Mot...

Hwang Hyo-eun

as

Seok-woo's Sis...

Yoon Je-moon

as

Joo Je-moon

Kim Su-nam

as

Monk

Choi Deok-moon

as

Chief

Kim Kyung-ik

as

AD Notebook Mo...

Lee Bong-gyu

as

Senior Monk

Jung Jae-jin

as

Spiritual Lead...

Choe Dae-Hun

as

Seg. Heavenly ...