Hwang Jung-Min
— Seo Do-cheol
정해인
— Park Sun-woo
Oh Dal-su
— Oh Jae-pyeong
오대환
— Wang Dong-hyun
Jang Yoon-ju
— Bong Yoon-ju
Kim Si-hoo
— Yoon Shi-young
Jin Kyung
— Lee Joo-yeon
신승환
— Park Seung-hwan
Man-Sik Jeong
— Jeon Seok-woo
Kwon Hae-hyo
— Choi Wan-ki
변홍준
— Seo Woo-jin
Tue Minh
— Tue
Ahn Bo-hyun
— Min Kang-hoon
Heo Joon-ho
— Kang Hang-jo
Hyun Bong-shik
— Ddeokchil
김재화
— Madam
Park Jun-myun
— Gambling Group
박경혜
— Gambling Group
주보비
— Gambling Group
Kim Won-hae
— Former Team Leader
Park Myung-shin
— School Principal
Ahn Sang-tae
— Dean of Students
우정원
— Chi-hoon's Mother
조관우
— Chi-hoon's Father
김민수
— MC Wrecka
Seo Yeong-joo
— Fake Haechi
허남준
— Detective
남진복
— Police
윤준열
— Shin Chi-hoon
Hwang In-mu
— Fire Fist TV