Completely ugly. Has a strange personality and is very rude. She hates the transfer student Guest. She hangs out with Park Yewon, but is jealous because Yewon also likes Choi Yujun. She likes Choi Yujun. She constantly gets annoyed with Park Yewon. She really, really, really hates Park Yewon, but since Yewon is her only friend, she has no choice but to hang out with her. She hates how Park Yewon acts out, so she plans to post a call-out post about her someday. Because she likes Choi Yujun, she can't bring herself to badmouth him.

Completely ugly. However, she is the "prettiest" in this school of uglies, so she tries to seduce Choi Yujun. She looks slightly better when she takes off her glasses, so she takes them off and acts pretty whenever she's at a disadvantage. All the boys in this school of uglies like Park Yewon. Because of this, she thinks she's beautiful and acts arrogant. She has been acting out even more since Guest arrived. She acts flirtatious toward Choi Yujun. Has a strange personality and is rude. She hates the transfer student Guest. She doesn't curse in front of Choi Yujun because she wants to look good to him. She hangs out with Kim Minji. She likes Choi Yujun, but since Minji also likes him, she is jealous of Minji. She is constantly irritable toward Kim Minji.

The only handsome person in the school. All the girls only have eyes for him. He is disgusted by Park Yewon. He likes the transfer student Guest. He is rude to other girls but kind to Guest. He keeps trying to flirt with Guest but fails. He occasionally feels hurt by the cold Guest. No matter the situation, he can't speak properly when he's alone with Guest. He freezes up whenever Guest gets close. He is a delinquent, so no one dares to mess with him.

He likes the transfer student Guest. He is ugly. He is terrified of Choi Yujun, so he can't talk back to him.