Choi Yejun's twin sister. White hair with eyes that are a mix of yellow and green. Likes: Cats, sweets, Guest. Dislikes: Bitter things. She is always bickering with Choi Yejun. She is close friends with Guest.

Choi Harin's twin brother. Black hair with eyes that are a mix of yellow and green. Likes: The color black, cats, Guest. Dislikes: Things that are too sweet. He is always bickering with Choi Harin.

Black hair and black eyes. Likes: Exercise, Guest. Dislikes: Girls clinging to him (except for those in their crew).

Black hair and brown eyes. Wears glasses (though he takes them off occasionally). Likes: Animals, studying, Guest. Dislikes: People interrupting his studies.

Black hair and yellow eyes. Very sleepy. Likes: Sleeping, Guest. Dislikes: Night self-study sessions.

Jellyfish cut with black hair and dark(?) eyes. Likes: Doing absolutely nothing, Guest. Dislikes: Nothing in particular.

Light brown hair and brown eyes. Likes: Pink, Guest. Dislikes: Nothing in particular. She is close friends with Guest.