Song Kang-ho as Park Gang-du

Byun Hee-bong as Park Hie-bong

Park Hae-il as Park Nam-il

Bae Doona as Park Nam-joo

Ko A-sung as Park Hyun-seo

Oh Dal-su as The Monster (voice)

Lee Jae-eung as Se-jin

Lee Dong-ho as Se-joo

Yoon Je-moon as Homeless Man

Yim Pil-sung as Fat Guevara

Kim Roi-ha as Yellow Suit at Funeral

Koh Soo-hee as Hostage nurse

Kim Hak-seon as Civilian Military Kim

Scott Wilson as Douglas

Brian Rhee as Young Korean Doctor

Paul Lazar as American Doctor

David Anselmo as Donald

Baek Do-bin as Fumigation Truck Skinny Man

Martin Lord Cayce as U.S. Senator (uncredited)

Choi Dae-sung as Man from Duck Boat (uncredited)

Choi Doo-yeong as Man on Blind Date (uncredited)

Choi Jae-sup as Detective Agency Subordinate 1 (uncredited)

Jung Seo-yoon as Woman with Long Hair (uncredited)

Philip Hersh as Additional Voices (voice) (uncredited)

Jeong In-gi as Isolation Ward Doctor (uncredited)

Jeong Hyeong-Ho as 4th Mat 3 (uncredited)

Ji Ha-geon as Camera Phone Man (uncredited)

Moon Hee-Ra as Camera Phone Woman (uncredited)

Jeong Kang-hee as Mr. Yoon's Employee (uncredited)

Kim Bi-bi as Isolation Ward Nurse 1 (uncredited)

Kim Choo-wol as Woman crying (uncredited)

Kim Da-yeon as 5th Mat Woman (uncredited)

Kim Hyo-sun as Quarantine Hospital Nurse 2 (uncredited)

Kim Jin-seon as Woman from Couple (uncredited)

Kim Nan-hee as Woman from Duck Boat (uncredited)

Kim Sang-jo as Old Security Guard (uncredited)

Kwon Bang-hyeon as Bride-to-be (uncredited)

Kwon Byung-gil as Doctor from Isolation Ward 1 (uncredited)

Kwon Hyeok-pung as Fisherman 1 (uncredited)

Lee Dong-yong as 4th Mat 2 (uncredited)

Lee Eung-jae as Man from Couple (uncredited)

Lee Hoon-jin as Fat Man (uncredited)

Lee Jong-yoon as 4th Mat 1 (uncredited)

Lee Seung-jin as Girl's Father (uncredited)

Min Kyung-jin as Altar Security (uncredited)

Clinton Morgan as Agent Yellow (uncredited)

Park Jeong-gi as Fumigation Truck Dyed-hir Man (uncredited)

Park Kyeong-mok as Groom-to-be (uncredited)

Park No-shik as Inquiry Officer

Ra Mi-ran as Woman Stomping Her Feet (uncredited)

Seo Ha-neul as Exchanged Girl (uncredited)

Shin Seung-ri as Donald's Girlfriend (uncredited)

Shin Hyeon-jong as Mr. Yoon's Friend (uncredited)

Son Young-soon as Grandmother from Bus (uncredited)

Son Jin-ho as Doctor from Isolation Ward 2

Song Kyeong-ha as Woman on Blind Date (uncredited)

Yoo Seung-mok as Taxi Driver

Yoo Yeon-soo as District officer Mr. Jo (uncredited)

Seo Young-ju as Protester

Ko Chang-seok as Nurse

Park Jin-woo as Isolation Ward Constable (uncredited)

Park Ji-hwan as

Yoo In-soo as Nursing assistant