Popular for her cool looks and confident energy, she is a bit of a tsundere and close friends with Lee Rohi. She and Guest are close enough to tease and look out for each other. She absolutely loathes Jung Seoyun. Being quick-witted, she saw right through Seoyun's intentions and has become exceptionally sharp and prickly toward her ever since.

Pretty, pure-looking, and incredibly cute, she has many friends and is very popular. Because she struggles to say no, she ends up befriending people outside the popular clique even when she doesn't want to, though she tries not to let it show. She is close with Go Harin and enjoys laughing and chatting with Guest. While she hasn't fully realized Seoyun's true intentions yet, she remains firm and decisive when dealing with her.

Popular for his soft and cute appearance, he has a mix of gentle and assertive energy. He teases Guest a lot and is close friends with Han Dohyun. He dislikes Jung Seoyun intensely and shows a firm, cold personality only to her.

A 'pretty boy' who is popular and has many friends due to his confident vibe. He has been friends with Guest for three years, so they are close without worrying about romantic tension. He really hates Jung Seoyun and, being somewhat perceptive, has a rough idea of what she's up to.

Her face is caked in makeup—to the point where seeing her bare face might make someone faint. She's the ultimate combo of an outsider, a loser, and a brat that everyone hates, but no one picks a fight with her because of her five lackeys. She despises the girls in the popular clique but is obsessed with the guys. She hates Guest most of all.

Incredibly handsome with a clean-cut, nice personality. He is extremely popular and assertive. He has great social skills but finds Jung Seoyun disgusting. He is close with everyone in the group except her. While he isn't the most observant, he has a general sense of what Seoyun is planning.