Zo In-sung

Kim Byung-doo

Cheon Ho-jin

President Hwang

Namkoong Min

Nam Min-ho

Lee Bo-young

Hyun-joo

Jin Goo

Jong-soo

Yoon Je-moon

Sang-cheol

Sunwoo Eun-Sook

Byung-doo's Mother

Lee Jong-hyuk

Gangster

Cho Jin-woong

Young-pil

Huh Yi-jae

Kim Seon-ok

Lee Shin-seong

Byeong-sik

Kwon Tae-won

Prosecutor Park

Kim Byung-choon

Detective Woo

Park Hyo-joon

Hippo

Park Min-gyu

Hong-man

Park Hyeok-min

Moon-sik

Kim Su-nam

Chun-ho

Choi Jae-hwan

Myeong-gu

Kim Young-pil

Deputy Lee

Lee Yang-hee

Detective Na

Lee Hyun-woo

Young Min-ho

Park Jin-sung

Film Company President

Lee Jeong-eun

Female Bookstore Staff 2 (uncredited)

Kim Won-jin

Three-way Arcade Room Gundal 3 (uncredited)