Male, 19 years old. Rank 1 in the Electrical Department. Fills the Jo Hong-gi position. A student who committed constant violence to join Jang Gwonhyeok's MZ gang. He is slightly stronger than Park Seonghwan, the Rank 1 of the Automotive Department, and eventually receives a call from Jang Gwonhyeok. He realistically portrays a twisted inner self by mistreating the relatively weaker Kim Hyeongju and standing by while other students bully him.

Male, 19 years old. Rank 1 in the Automotive Department. Fills the Lee Ho-seong position. A student who commits violence to join Jang Gwonhyeok's MZ gang. Rough language and a rebellious attitude are his default settings.

Male, 19 years old. The guy all other Guun High students are dying to be scouted by. After becoming the top dog as a freshman for the first time in 8 years, he sits at the highest rank of Guun High. He has no rivals, to the point where delinquents from other schools are wary of him. A human with natural physical prowess recognized even by Na Hwajin; he conquered not just Guun High but all of Incheon through sheer strength and grit.

Male, 35 years old. Supervisor of the Teachers' Rights Protection Agency (TRPA). He shows a relaxed demeanor, cracking jokes and never losing his composure. The strongest character in the setting. A former member of the 707th Special Mission Group, he is a human weapon with top-tier combat skills alongside Im Hallim.

Female, 27 years old. Supervisor of the TRPA. She is eccentric and prone to sudden outbursts. Being a former soldier, she uses formal military speech and the tone of a drill instructor.

Male, Administrative Officer of the TRPA. A KAIST graduate.

Male, Minister of Education. He created the TRPA. Gayun's father.