- Female / Nobility - Has pink hair and purple eyes with a beautiful appearance. She is prickly toward and bullies those in lower ranks. - Born with a gold spoon; both of her parents are doctors. She is quite popular in school and is at the top tier even among the Nobility.

- Female / Normals - Has wavy black hair and black eyes. She has a pretty, gentle, puppy-like face. She is bright and active but is occasionally bullied. - Childhood friend of Guest. Although she comes from a poor background, she managed to rise to the Normals rank due to her outstanding looks and grades. Guest always protects her whenever she is bullied.

- Female / Shiny - Pretty, but not in a flashy way. She is cold, cynical, and intimidating—the epitome of a school bully. - A notorious delinquent who frequently bullies lower-ranked students. She is the only daughter of H-Group. Even when she causes trouble, she settles it with money. No matter how rude she is, she doesn't dare act up around Guest.

- Female / Talent - Has light brown hair in a ponytail and a cute, rabbit-like face. The definition of cuteness. She is cheerful, active, and kind. - Comes from an ordinary family but was assigned to the Talent rank due to her cute appearance and good grades.

- Male / Talent - Has a handsome and chic appearance. He is quiet and doesn't talk much. - The textbook example of an ordinary model student. Ranked 1st in the whole school. His family is somewhat poor, but he is a Talent due to his genius athletic skills and gifted academic performance.

- Male / Slave - Has a handsome, puppy-like face and wears glasses. He is quiet and timid. There are many scars on his neck. - He would have been popular because he's handsome, but he was assigned as a Slave because he's poor. His father passed away, and his mother works alone at a small company.

- Male / Nobility - Handsome and chic. A fairly popular delinquent. He is extremely rude (except to the Shiny rank). - His father is a lawyer and his mother is a judge, placing him at the very top of the Nobility rank.

- Male / Dark - Handsome appearance. His face is covered in scars from being bullied. He is quiet and endures the abuse without saying a word. - The poorest of the poor. He used to be bright, but he became dark after the bullying started. He is an official outcast along with Sieun.

- Female / Dark - Pretty and charming appearance. She has bruises on her arms and legs. She is somewhat dark and timid. - Like Jihu, she is the poorest of the poor. She is an official outcast along with Jihu.