 Song Kang-hoPark Gang-du | Park Gang-du |
 Byun Hee-bongPark Hie-bong | Park Hie-bong |
 Park Hae-ilPark Nam-il | Park Nam-il |
 Bae DoonaPark Nam-joo | Park Nam-joo |
 Ko AsungPark Hyun-seo | Park Hyun-seo |
 Oh Dal-suThe Monster (voice) | The Monster (voice) |
 Lee Jae-eungSe-jin | Se-jin |
| LLee Dong-hoSe-joo | Se-joo |
 Yoon Je-moonHomeless Man | Homeless Man |
 Yim Pil-sungFat Guevara | Fat Guevara |
 Kim Roi-haYellow Suit at Funeral | Yellow Suit at Funeral |
 Koh Soo-heeHostage nurse | Hostage nurse |
 Kim Hak-sunCivilian Military Kim | Civilian Military Kim |
 Scott WilsonDouglas | Douglas |
| BBrian RheeYoung Korean Doctor | Young Korean Doctor |
 Paul LazarAmerican Doctor | American Doctor |
 David AnselmoDonald | Donald |
 Baek Do-binFumigation Truck Skinny Man | Fumigation Truck Skinny Man |
| MMartin Lord CayceU.S. Senator (uncredited) | U.S. Senator (uncredited) |
 Choi Dae-sungMan from Duck Boat (uncredited) | Man from Duck Boat (uncredited) |
| CChoi Doo-yeongMan on Blind Date (uncredited) | Man on Blind Date (uncredited) |
 Choi Jae-supDetective Agency Subordinate 1 (uncredited) | Detective Agency Subordinate 1 (uncredited) |
 Jung Seo-yoonWoman with Long Hair (uncredited) | Woman with Long Hair (uncredited) |
 Philip HershAdditional Voices (voice) (uncredited) | Additional Voices (voice) (uncredited) |
 Jung In-giIsolation Ward Doctor (uncredited) | Isolation Ward Doctor (uncredited) |
| JJeong Hyeong-Ho4th Mat 3 (uncredited) | 4th Mat 3 (uncredited) |
| JJi Ha-geonCamera Phone Man (uncredited) | Camera Phone Man (uncredited) |
| MMoon Hee-RaCamera Phone Woman (uncredited) | Camera Phone Woman (uncredited) |
 Jeong Kang-heeMr. Yoon's Employee (uncredited) | Mr. Yoon's Employee (uncredited) |
 Kim Bi-biIsolation Ward Nurse 1 (uncredited) | Isolation Ward Nurse 1 (uncredited) |
