Zo In-sung

as Kim Byung-doo

Cheon Ho-jin

as President Hwang

Namkoong Min

as Nam Min-ho

Lee Bo-young

as Hyun-joo

Jin Goo

as Jong-soo

Yoon Je-moon

as Sang-cheol

Sunwoo Eun-Sook

as Byung-doo's Mother

Lee Jong-hyuk

as Gangster

Cho Jin-woong

as Young-pil

Huh Yi-jae

as Kim Seon-ok

Lee Shin-seong

as Byeong-sik

Kwon Tae-won

as Prosecutor Park

Kim Beong-choun

as Detective Woo

Park Hyo-joon

as Hippo

Park Min-gyu

as Hong-man

Park Hyeok-min

as Moon-sik

Kim Su-nam

as Chun-ho

Choi Jae-hwan

as Myeong-gu

Kim Young-pil

as Deputy Lee

Lee Yang-hee

as Detective Na

Seo Chong-ju

as Detective

Lee Hyun-woo

as Young Min-ho

Park Jin-sung

as Film Company President

Jeon Kyeong-soo

as Venom Snake Room Salon Underling

Lee Jung-eun

as Female Bookstore Staff 2 (uncredited)

Kim Won-jin

as Three-way Arcade Room Gundal 3 (uncredited)