Ko Asung Park Hyun-seo
Bong Joon Ho Director, Screenplay
Song Kang-ho Park Gang-du
Bae Doona Park Nam-joo
Park Jin-woo Isolation Ward Constable (uncredited)
Oh Dal-su The Monster (voice)
Kim Roi-ha Yellow Suit at Funeral
Yoon Je-moon Homeless Man
Park Hae-il Park Nam-il
Scott Wilson Douglas
Kim Hak-sun Civilian Military Kim
Jung Seo-yoon Woman with Long Hair (uncredited)
Miky Lee Executive Producer
Yoo Seung-mok Taxi Driver
Lee Dong-yong 4th Mat 2 (uncredited)
Kim Sun-min Editor
Lee Jae-eung Se-jin
Min Kyung-jin Altar Security (uncredited)
Ra Mi-ran Woman Stomping Her Feet (uncredited)
Yang Gil-yeong Fight Choreographer
Son Young-soon Grandmother from Bus (uncredited)
Park No-shik Inquiry Officer
Kwak Tae-yong Special Effects Makeup Artist
Kim Jin-seon Woman from Couple (uncredited)
Byun Hee-bong Park Hie-bong
Shin Hyeon-jong Mr. Yoon's Friend (uncredited)
Paul Lazar American Doctor
Jeong In-gi Isolation Ward Doctor (uncredited)
Seo Myeong-seok Stunts
Cho Sang-kyung Costume Design
Park Jae-wook VFX Artist
Kim Woo-taek Executive Producer
Kim Hyung-koo Director of Photography
Kim Won-jung Stunts
Coll Anderson Sound Designer
Lee Hee-eun Special Effects Makeup Artist
Rob Nokes Sound Effects
Ryu Seong-hie Production Design
Ko Chang-seok Nurse
Kwon Byung-gil Doctor from Isolation Ward 1 (uncredited)
Choi Jae-sup Detective Agency Subordinate 1 (uncredited)
Park Jeong-gi Fumigation Truck Dyed-hir Man (uncredited)
Lee Seung-chul Production Sound Mixer
Choi Tae-young Sound
Kim Byung-seo Camera Operator
Jung Sung-jin Visual Effects Director
Sean Garnhart Sound Designer
Kim Nan-hee Woman from Duck Boat (uncredited)
Song Jong-hee Makeup & Hair
Hwang Hyo-kyun Special Effects Makeup Artist
Kwon Tae-ho Stunts
David Anselmo Donald
Richard Mueck Painter, Sculptor
Kim Hyun-woo Co-Executive Producer
Jang Seok-ho Props
Lee Tae-yeong Stunts
Kwon Hyeok-pung Fisherman 1 (uncredited)
Son Jin-ho Doctor from Isolation Ward 2
Jeong Tae-sung Executive Producer
Kim Byeong-gi Special Effects Supervisor
Kevin Rafferty VFX Supervisor
Bill Orrico Sound Effects Editor
Park Yong-ki Sound Re-Recording Mixer
Lee Yong-ki Colorist
Kwak Jung-ae Costume Design
Kim Won-jung Stunts
Toby Barron Painter, Sculptor
Lee Byung-woo Original Music Composer
Yang Hong-sam Set Decoration
Philip Hersh Additional Voices (voice) (uncredited)
Lewis Taewan Kim Co-Producer
Kang Jong-ik VFX Supervisor