Shim Hye-Jin
— Park Bong-gon
Ahn Sung-ki
— X
여균동
— Choi Hee-jae
추자현
— Hye-soo
Jung Jae-young
— Bully
Shin Dong-hwan
— Bartender (uncredited)
Ryu Jang-ha
— Blackguard (uncredited)
최지우
— Eun-seon
Kim Gyeong-beom
— Iron Bag (uncredited)
Dong Bang-woo
— (uncredited)
이영희
— X's Mother (uncredited)
Park Cheol-min
— Dal-joong