Wolf-Boy / Chul-soo
Song Joong-ki
Young Sun-yi / Eun-ju
Park Bo-young
Policeman
Lee Jun-hyeok
Thug 1 (uncredited)
Soel Oh-shin
Thug 2 (uncredited)
Han Min-hik
Thug 3 (uncredited)
Chuay Kwong-lak
Man in Black Suit 1 (uncredited)
Sung Du-hyung
Man in Black Suit 2 (uncredited)
Cha Jong-ho
Army Colonel (uncredited)
Seo Dong-soo
(uncredited)
Jung In-gum
Lee In-ho
Policeman 2 (uncredited)
Oh Yeong-seok
Ji-tae
Yoo Yeon-seok
Ku Lu-han
Construction Worker at Market 1 (uncredited)
Kim Chul-jun
Construction Worker at Market 2 (uncredited)
Park Young-shik
Public Official (uncredited)
Kim Seung-hun
Drunk Man (uncredited)
Koo Kyo-hwan
Military Chief (uncredited)
Kim Eun-sook
Acupuncturist (uncredited)
Hong Sung-ki
Hospital Doctor (uncredited)
Hung Hi-kwon
Dr. Kang's Assistant (uncredited)
Lee Min-woong
Dong-suk's Grandmother (uncredited)
Nam Jung-hee
Sun-yi
Lee Young-lan
Dong-suk (uncredited)
Ahn Do-gyu
Woman Renting Mr. Jung's Room (uncredited)
Kim Hae-eun
Sun-yi's Son (uncredited)
Lee Sung-ju
Sun-yi's Daughter-in-Law (uncredited)
Jang seo-yi
Sun-yi's Grandson (uncredited)
Jo Jae-yun
Sun-yi's Father (uncredited)
Kim Jong-goo
Eun-ju's Boyfriend (uncredited)
Shin Yeong-cheol
Sun-yi's Mother
Jang Young-nam
Sun-ja
Kim Hyang-gi
Professor Kang Tae-shik
Yoo Seung-mok
Dong-mi
Shin Bi
Mr. Jung
Woo Jung-kook
Mrs. Jung
Goo Bon-im
Visual Effects
Park Yeong-su
Executive Producer
Park Cheol-su
Visual Effects Supervisor
Jang Seong-ho
Writer
Jo Sung-hee
Director
Lighting Artist
Yoo Seok-moon
Digital Colorist
Kim Hyung-seok
Director of Photography
Choi Sang-muk
Camera Operator
Jang Jong-kyung
Set Decoration
Shin Seung-Hoon
Lighting Director
Lee Sung-jae
Costume Design
Kwak Jung-ae
Music
Shim Hyun-jung
Production Supervisor
Kim Bo-ra
Editor
Nam Na-young
Producer
Kim Su-jin
O Yeong-seok
Sound Supervisor
Gong Tae-won
Yun In-beom
Nam Seong-ju
Production Manager
Son Moon-sung
Line Producer
Kim Hyun-kyu
Special Effects Supervisor
Park Choul-yong
Sound Recordist
Lee Jong-ho
Assistant Director
Han Gyeong-hoon