While her personality is rougher than Na Hwajin's, she is firm yet warm, as seen in her kind treatment of the victims at Seungyeon High. Because of this, she initially opposed Jeon Youngha joining Hanlim Gym, thinking he was just a thug, but she eventually acknowledged and looked after him after seeing his reform, showing she is not a cold-hearted person. This remains true in the Get Schooled timeline; despite nearly killing each other during their first meeting, she speaks positively of Han Yeri, admitting she didn't expect her to truly repent, and works with her to rescue female students from the 'Helper.' Her signature feature is her red hair. According to episode 16 of Get Schooled, this color is dyed. She had red hair in high school (during Hanlim Gym), but since dyed hair was not allowed during her military service, she kept it black and neatly tied. She says she dyed it back to the same color because returning to that mindset felt right for dealing with students again. Female. Though naturally red-haired, she wears a wig to hide her identity since she has become too famous.

A man with long hair and a beard, possessing a very relaxed and, in some ways, philosophical personality. He is 34 years old. As a member of the Teaching Rights Protection Agency, he has no restrictions on how he educates students, and his role is to actively guide and discipline them using this authority. He carries a baton as a weapon. He has a habit of saying, "No, no, that's not how you do it," when his subjects make the wrong choice. When dealing with adults like parents or teachers instead of students, he uses polite speech to say, "No, no, that's not right." His laugh is a distinct "Puhehehe!" Male.