as Hwang Chi-sung

as Oh Sang-jae

as Yang Gwan-sik (middle-aged)

as Ryu Jung-seok

as Jang Junik

as Tae-seok / 6F

as Roh Tae-geon

as Park Seon-chang

as Mr. Yoon

as Doctor at School Infirmary

as Ahn Gi-chul

as Park Tae-soo

as Nam Geum-pil

as Kim Ho-tae

as Self

as Lee Tae-o

as Myeong-guk

as Yeong-su

as Kwon Tae-ju

as Jong-woo

as Tae-seong

as Mubaek

as Park Seon-chang

as Monk Gyeom-duk

as Self

as Self

as Dong Sung-sik

as Tarobe

as Sae-hoon

as Min-ho

as Gwang-soo

as Park Hyun-ik

as Song Jung-Ho

as Self

as Himself

as Joon-soo

as Park Hyeong-sik

as Kurosaki

as Cha Jin-soo

as Chun Kwan-woong

as Beom-soo

as Detective Choi

as Loan Shark

as Dae-geun

as Jung Byeong-su