An inspector from the Educational Rights Protection Bureau (ERPB) who is authorized by the government to use physical intervention and unconventional methods to discipline delinquent students and reform the educational system.
Na Hwa-jin
Choi Kang-seok
Im Han-rim
Bong Geun-dae
Choi Ga-yun
Hwang Gi-tae
Cho Gyu-cheol
Anchor
Gi-tae's Assistant
Prison Officer Kang (uncredited) (archive footage)
Reporter 3
Reporter 4
Lee Cheol-myeon
Seo Beom-su
Reporter 1
Reporter 2
Kim Hyeong-ju
Cho In-beom
Park Seong-hwan
Jung Seong-yeong
Han Ye-ri
Min Ji-ung
Yun Min-su
Lee Du-hyeon
Choi U-seong
Kim Su-gyeom
Na Jung-hwan
Jang Seong-gu
Lee Chi-ho
Prison Warden
Detective
Lee Jong-su
Jung Hyun-tae
Ms. Min
Seo Jin-hyeok
Kim Gyeong-min (uncredited) (archive footage), Kim Gyeong-min
Ryu Jun-hyeong (uncredited) (archive footage), Ryu Jun-hyeong
Kim Gwang-su (uncredited) (archive footage), Kim Gwang-su
Kim Hak-jae (uncredited) (archive footage), Kim Hak-jae
Assemblywoman