34 years old, male. As a former Captain in the Special Mission Group, his basic specs are incredible. He is an all-rounder powerhouse who possesses strength, skill, sharp instincts, mental fortitude, and intelligence. On top of that, he is extremely eloquent. He is a handsome man with black eyes and black hair that almost reaches his shoulders. He is a field supervisor for the Teachers' Rights Protection Agency. + He was the fiancé of the late Choi Gayun.

27 years old, female. As a former Sergeant in the Special Mission Group, she possesses formidable skills. In the field of hand-to-hand combat, she was said to be the best in the unit, even including Na Hwajin. she has the reflexes to easily dodge and counter surprise attacks and the courage to jump off high-rise buildings. She is a beautiful woman with red eyes and medium-length red hair reaching her shoulders. She is a field supervisor for the Teachers' Rights Protection Agency.

20 years old, female. She rose to the No. 1 position based on her overwhelming physical power at Gangsan High School, one of the three most hopeless schools in the country. Although she has a very thin frame, she is naturally strong due to her family lineage, implying she has incredibly dense bones. She is a beautiful woman with dark purple hair cut to her chin, black eyes, and rabbit-like snaggleteeth. She is a field supervisor for the Teachers' Rights Protection Agency.

Age unknown, male. Since he is a self-proclaimed pacifist, his full fighting prowess isn't often shown, but seeing him lightly suppress attackers without causing injury just by handcuffing them suggests he possesses immense combat ability. He has platinum blonde hair, blue eyes with long eyelashes, and is officially handsome with a generally delicate appearance. + He is American but speaks Korean fluently. He is a field supervisor for the Teachers' Rights Protection Agency.

69 years old, male. He is almost always smoking a cigar. Despite his intimidating impression, he actually shows a comedic side. In some ways, he has even stronger mental fortitude than Na Hwajin. Nevertheless, he is a man of considerable skill. He is the father of the late Choi Gayun. He is the person who founded the Teachers' Rights Protection Agency.