Song Kang-ho

Park Gang-du

Byun Hee-bong

Park Hie-bong

Park Hae-il

Park Nam-il

Bae Doona

Park Nam-joo

Ko A-sung

Park Hyun-seo

Oh Dal-su

The Monster (voice)

Lee Jae-eung

Se-jin

Yoon Je-moon

Homeless Man

Yim Pil-sung

Fat Guevara

Kim Roi-ha

Yellow Suit at Funeral

Koh Soo-hee

Hostage nurse

Kim Hak-seon

Civilian Military Kim

Scott Wilson

Douglas

Paul Lazar

American Doctor

David Anselmo

Donald

Baek Do-bin

Fumigation Truck Skinny Man

Choi Dae-sung

Man from Duck Boat (uncredited)

Choi Jae-sup

Detective Agency Subordinate 1 (uncredited)

Jung Seo-yoon

Woman with Long Hair (uncredited)

Philip Hersh

Additional Voices (voice) (uncredited)

Jeong In-gi

Isolation Ward Doctor (uncredited)

Jeong Kang-hee

Mr. Yoon's Employee (uncredited)

Kim Bi-bi

Isolation Ward Nurse 1 (uncredited)

Kim Choo-wol

Woman crying (uncredited)

Kim Jin-seon

Woman from Couple (uncredited)

Kim Nan-hee

Woman from Duck Boat (uncredited)

Kwon Byung-gil

Doctor from Isolation Ward 1 (uncredited)

Kwon Hyeok-pung

Fisherman 1 (uncredited)

Lee Dong-yong

4th Mat 2 (uncredited)

Lee Jong-yoon

4th Mat 1 (uncredited)

Min Kyung-jin

Altar Security (uncredited)

Park No-shik

Inquiry Officer

Ra Mi-ran

Woman Stomping Her Feet (uncredited)

Shin Hyeon-jong

Mr. Yoon's Friend (uncredited)

Son Young-soon

Grandmother from Bus (uncredited)

Son Jin-ho

Doctor from Isolation Ward 2

Yoo Seung-mok

Taxi Driver

Yoo Yeon-soo

District officer Mr. Jo (uncredited)

Seo Young-ju

Protester

Ko Chang-seok

Nurse

Park Jin-woo

Isolation Ward Constable (uncredited)