A teenage girl is captured by a giant mutated squid-like creature that appears from Seoul's Han River after toxic waste was dumped in it, prompting her family into a frantic search for her.
Park Gang-du
Song Kang-ho
Park Hie-bong
Byun Hee-bong
Park Nam-il
Park Hae-il
Park Nam-joo
Bae Doona
Park Hyun-seo
Ko A-sung
The Monster (voice)
Oh Dal-su
Se-jin
Lee Jae-eung
Se-joo
Lee Dong-ho
Homeless Man
Yoon Je-moon
Fat Guevara
Yim Pil-sung
Yellow Suit at Funeral
Kim Roi-ha
Hostage nurse
Koh Soo-hee
Civilian Military Kim
Kim Hak-seon
Douglas
Scott Wilson
Young Korean Doctor
Brian Rhee
American Doctor
Paul Lazar
Donald
David Anselmo
Fumigation Truck Skinny Man
Baek Do-bin
U.S. Senator (uncredited)
Martin Lord Cayce
Man from Duck Boat (uncredited)
Choi Dae-sung
Man on Blind Date (uncredited)
Choi Doo-yeong
Detective Agency Subordinate 1 (uncredited)
Choi Jae-sup
Woman with Long Hair (uncredited)
Jung Seo-yoon
Additional Voices (voice) (uncredited)
Philip Hersh
Isolation Ward Doctor (uncredited)
Jeong In-gi
4th Mat 3 (uncredited)
Jeong Hyeong-Ho
Camera Phone Man (uncredited)
Ji Ha-geon
Camera Phone Woman (uncredited)
Moon Hee-Ra
Mr. Yoon's Employee (uncredited)
Jeong Kang-hee
Isolation Ward Nurse 1 (uncredited)
Kim Bi-bi
Woman crying (uncredited)
Kim Choo-wol
5th Mat Woman (uncredited)
Kim Da-yeon
Quarantine Hospital Nurse 2 (uncredited)
Kim Hyo-sun
Woman from Couple (uncredited)
Kim Jin-seon
Woman from Duck Boat (uncredited)
Kim Nan-hee
Old Security Guard (uncredited)
Kim Sang-jo
Bride-to-be (uncredited)
Kwon Bang-hyeon
Doctor from Isolation Ward 1 (uncredited)
Kwon Byung-gil
Fisherman 1 (uncredited)
Kwon Hyeok-pung
4th Mat 2 (uncredited)
Lee Dong-yong
Man from Couple (uncredited)
Lee Eung-jae
Fat Man (uncredited)
Lee Hoon-jin
4th Mat 1 (uncredited)
Lee Jong-yoon
Girl's Father (uncredited)
Lee Seung-jin
Altar Security (uncredited)
Min Kyung-jin
Agent Yellow (uncredited)
Clinton Morgan
Fumigation Truck Dyed-hir Man (uncredited)
Park Jeong-gi
Groom-to-be (uncredited)
Park Kyeong-mok
Inquiry Officer
Park No-shik
Woman Stomping Her Feet (uncredited)
Ra Mi-ran
Exchanged Girl (uncredited)
Seo Ha-neul
Donald's Girlfriend (uncredited)
Shin Seung-ri
Mr. Yoon's Friend (uncredited)
Shin Hyeon-jong
Grandmother from Bus (uncredited)
Son Young-soon
Doctor from Isolation Ward 2
Son Jin-ho
Woman on Blind Date (uncredited)
Song Kyeong-ha
Taxi Driver
Yoo Seung-mok
District officer Mr. Jo (uncredited)
Yoo Yeon-soo
Protester
Seo Young-ju
Nurse
Ko Chang-seok
Isolation Ward Constable (uncredited)
Park Jin-woo
Park Ji-hwan
Nursing assistant
Yoo In-soo