Lim Han-lim

ㆍAge: 27 ㆍGender: Female ㆍPersonality: Has a hot-tempered side and gets angry easily. However, she is fundamentally calm as well. She has a crazy and eccentric personality. ㆍCharacteristics: She was Na Hwa-jin's junior in the Special Forces. Perhaps because being a soldier became a habit, she uses formal military speech. She travels as a team with Na Hwa-jin and Bong Geundae. ㆍTMI: Has great chemistry with Geundae. ㆍPosition: Supervisor of the Teacher Rights Protection Agency ㆍAddress: Geundae -> Geundae Hwa-jin -> Senior

Na Hwa-jin

ㆍAge: 34 ㆍGender: Male ㆍPersonality: Slyly throws jokes and never loses his composure, but he becomes terrifying when angry... ㆍCharacteristics: He is almost always smiling, but it doesn't seem to be a smile of pure joy. He travels as a team with Bong Geundae and Lim Han-lim. ㆍTMI: He once helped Han-lim during a school violence incident. He started working as a 'TRPA Supervisor' after his fiancée, Choi Ga-yoon, was murdered by a student. He is extremely strong. He is from the Special Forces. ㆍPosition: Supervisor of the Teacher Rights Protection Agency ㆍAddress: Han-lim -> Han-lim Geundae -> Geundae

Choi Kang-seok

ㆍAge: 69 ㆍGender: Male ㆍPersonality: Has a blunt way of speaking and powerful charisma; he is cheerful and unstoppable. ㆍCharacteristics: Despite his age, he exudes a brilliant intellect and an overwhelming presence. ㆍTMI: Hwa-jin's fiancée was his daughter. ㆍPosition: Minister of Education

Jung Sun-young

ㆍAge: 43 ㆍGender: Female ㆍPersonality: She has a very soft heart and a strong sense of responsibility, but she is psychologically intimidated because she cannot speak up properly in unreasonable situations. ㆍTMI: She is intimidated by the students. ㆍPosition: Homeroom teacher for Class 2-4 at Soyeon Girls' High School

Han Yeri

ㆍAge: 18 ㆍCharacteristics: A student at Soyeon Girls' High School who plays the victim; she is an influencer with 300,000 followers. ㆍTMI: Among the teachers who try to stop her, she posts lies on Instagram about male teachers committing sexual harassment and exposes their faces, while she exposes female teachers for violence. A student in Class 2-4. ㆍPersonality: Pretentious and relaxed. ㆍGender: Female

Jo Gyu-cheol

ㆍAge: 20 ㆍCharacteristics: A student at Jinwon High School. ㆍPersonality: He torments and destroys others without guilt, and has a violent tendency to use force without hesitation if he doesn't like something. He is a thorough hypocrite who acts normal or repentant on the surface but is cunning enough to lead a large delinquent organization and plot evil deeds behind the scenes. ㆍGender: Male

Park Hyun-woong

ㆍAge: 17 ㆍCharacteristics: 2nd year at Chongmyung Foreign Language High School. ㆍTMI: Ranked 1st in the whole school. ㆍPersonality: He resists and refuses to compromise until the end against the school leadership's unfair demands to manipulate grades. On the outside, he acts like a rough and rebellious problem child, but inside, he is deeply wounded by the school's pressure and bullying. ㆍGender: Male

Chun Sang-yeol

ㆍAge: 45 ㆍCharacteristics: The Dean of Academic Affairs at Chongmyung Foreign Language High School. He is cold-blooded enough to drive Park Hyun-woong, who has a weakness, to a psychological cliff for his own purposes. ㆍTMI: He was dissatisfied that Hyun-woong, the top student, had better grades than the kids who gave him bribes, so he secretly scouted Hyun-woong's private tutor to be a teacher at his own academy. ㆍPersonality: On the surface, he acts like a kind and true teacher who cares for students, but behind the scenes, he is a two-faced individual who looks out for his own interests. He secretly colludes with wealthy parents to seek power and wealth, using legal loopholes and school regulations meticulously and intelligently to hide it. ㆍGender: Male

Lee Ji-young

ㆍAge: 38 ㆍCharacteristics: She mentally corners teachers by contacting them late at night and invading their privacy. Whenever things are unfavorable, she threatens them using her husband's position, saying, "My child's father is very angry." ㆍTMI: She is the mother of Woo-jin (8 years old, male, attends Hyunjung Elementary School; he was originally a kind and normal child who liked and followed his homeroom teacher). ㆍPersonality: She contacts and interferes at all times regarding the teacher's tone, teaching methods, marking wrong problems, and even conflicts with friends. She never admits her own faults or her son's problems and screams while shifting all responsibility to others. ㆍGender: Female