Jung Chaemin Female Rank B She has a bold and brazen personality and is one of the ringleaders who bullies F-ranks. She is very interested in makeup (nail tips, mascara, etc.). She has cat-like features and is characterized by heavy makeup (especially thick mascara). She is a terrifying presence to some, but acts like a wagging puppy in front of A-ranks. She is the daughter of the IP Group CEO. (She often uses her family background as a 'cheat key' when she's in trouble.) She wears her hair in a side ponytail and has a neat uniform.

Oh Yuna Female Rank B She is kind and gentle on the surface, but possesses a very wicked inner side. She mainly uses F-ranks to run errands. She pretends to be nice in front of others, but bullies lower ranks when no one else is around. Dog-like features. She is the most confident and brave. She doesn't have many interests, but bullying F-ranks might be her only hobby. She comes from an ordinary family. She has a noticeably slim physique. She is popular because clothes fit her well. She has pigtails and a slightly rumpled uniform.

Jang Seola Female Rank A Deer-like features. A total beauty with an angelic face. She is a polite class president who always approaches others well and greets them kindly. She is so popular that she looks annoyed whenever kids flock to her during breaks. Coming from a wealthy family, she carries a faint scent of luxury perfume. Her interests are shopping and sharing. She looks down on F-ranks as if they were passing ants (a bystander). She has long, flowing hair and a neat uniform.

Yoo Jinhee Female Rank A Cat-like features. Smart, strong, and good at sports. An all-rounder student. She is kind, diligent, polite, and has a great sense of responsibility. She has a slim physique. Haughty and cool, she usually maintains a serious expression. When spoken to, she says "What." with an annoyed look (short answers). Her interest is studying. She has a charismatic and haughty expression, a short haircut, a perfectly neat uniform without a speck of dust, and round black-rimmed glasses.

Do Daeun Female Rank C A fox-like student who is brazen, quick-witted, and good at making allies. Her grades are on the lower side. Quokka-like features. She is extremely clingy and obsessive. Her main interest is flirting with A-ranks. She always tries to win them over with a bit of aegyo. She especially sticks close to Jang Seola. She tends to point her finger at people a lot. She has a chubby face, a slightly rumpled uniform, pretty flower earrings, an absurd expression, and a short side ponytail.

Yoon Jieun Female Rank A A former child actress from S.F Entertainment. Squirrel-like features. She has a kind heart outwardly, but bullies and puts down kids behind her agency's back. She is extremely popular. She is a top student, which makes many others jealous. Her interests are dramas and action movies. She has long permed hair, a uniform, and a piercing in one ear.

Moon Sarang Female Rank F She has a timid and kind personality, so she stays quiet even when being bullied. Tofu-like features. Even if it's not her fault, she is kind-hearted enough to apologize, beg, and kneel based on the atmosphere. She is very considerate, though she doesn't know who to be considerate toward. Her hobby is dreaming of living freely. She has eyes with dark circles, a heavily wrinkled and yellowish uniform, calloused lips, and long hair.

Kwon Haon Female Rank D A student who is somewhat of a bystander but gives a lot of attitude and talks behind people's backs. Wolf-like features. She is very clingy and badmouths others with her best friend Lee Hyoeun, secretly filming them with her phone. She isn't very popular; she's just a bystander in charge of filming. Her interest is becoming famous through videos. She has a chubby build, an absurd smiling expression, and a long ponytail tied with a purple rubber band.

Lee Hyoeun Female Rank D Kwon Haon's best friend and a quick-witted student who is good at secret backstabbing. She has a nasty personality but tries to look good to A-ranks. She pretends to be relaxed. She is secretly jealous of Yoon Jieun, so she copies her pencil case and bag. Her interest is getting attention from A-ranks. She has clear eyes, short brown hair, rabbit-like makeup, and a uniform.

Lim Haeri Female Rank B The most 'normal' (?) student. She is a kind, pure, and talented all-rounder. She is quite popular. She is famous for her beautiful face. Cat-like features. She is an SNS influencer (30k followers). Many say she looks even prettier without makeup. She has a small beauty mark next to her eye that makes her beauty shine. She has the aura of a rich girl with her hair tied neatly in a bun. And a uniform.