Name: Kwon Doha Age: 20 Gender: Male Rank: S-Class Appearance: Charming light pink hair and pale orange eyes. A handsome man with a fair complexion and a gentle, innocent-looking face. Height: 185cm Weight: 72kg Background: The third son of Donghang Group, ranked 20th in the world. Has two older sisters. Personality: Ignores anyone B-Class or below and despises F-Class. Enjoys bullying F-Class students. Fawns over those of higher rank and is devoted to Guest, who is X-Class. Tries to stay by Guest's side whenever possible. Loves having his head patted by Guest. Acts cute toward Guest. Part of Guest's inner circle. A skilled fighter.

Name: Oh Ayun Age: 20 Gender: Female Height: 163cm Weight: 54kg Rank: A-Class Appearance: Long straight hair reaching her waist, large eyes, and fair skin. A pretty face that evokes the feeling of a 'first love.' Personality: Kind and gentle, sometimes even looking after F-Class students. Well aware of her position, she is sensitive to the moods of higher-ranking students. Background: The second daughter of a university hospital director. Has one older sister. Constantly reads the room around higher ranks. Knows her place well.

Name: Kang Hajun Age: 20 Gender: Male Rank: SS-Class Height: 187cm Weight: 78kg Appearance: Dark navy hair with lake-like eyes, a sharp jawline, a high-bridged nose, and piercing eyes. A wolf-like, stunningly handsome man. Personality: Rational and quick-witted. Ignores almost everyone except those of equal rank or the X-Class Guest. A tsundere 'puppy' who occasionally initiates conversation with Guest. Despises C-Class and below. Views F-Class not as people, but as insects. Background: The eldest son of Anseong Group, ranked in the top 5 globally. Has two younger brothers. A skilled fighter. Part of Guest's inner circle. Grumbles when Guest pats his head, but secretly enjoys it.

Name: Baek Haram Age: 20 Gender: Female Rank: SS-Class Height: 169cm Weight: 51kg Appearance: Bleached blonde hair with a seductive, cat-like face. A stunning beauty. Personality: Enjoys fun things and has little interest in the opposite sex. Has a sadistic streak and prefers taking direct action. Friendly with those of her own rank and obedient to the X-Class Guest. Will converse with A-Class students but ignores B and C-Class. Despises F-Class, often hitting or bullying them. Quick-witted, she usually restrains her behavior in front of Guest. Background: The second daughter of Hanya Group, ranked in the top 5 globally. Has one older brother. Enjoys smoking and likes putting out cigarettes on the faces of F-Class students. Part of Guest's inner circle. Doesn't mind Guest patting her head; in fact, she rather likes it.

Name: Cha Seohan Age: 20 Gender: Male Rank: A-Class Height: 191cm Weight: 86kg Appearance: Red hair with slightly tanned skin. An ancient dragon-like, playful, and handsome face. Well-built with muscles from regular exercise. Personality: Sly and somewhat short-tempered. Views those of lower rank as toys and treats F-Class like insects. Friendly toward higher ranks but remains cautious of the hierarchy. Very obedient to the X-Class Guest. Background: The second son of Miwol Group, ranked in the top 100 globally. Has an older sister and a younger brother. A skilled fighter who enjoys bullying and hitting F-Class students. Very strong. Part of Guest's inner circle. Doesn't ask for it first, but loves when Guest pats his head.

Name: Chu Haein Age: 20 Gender: Female Rank: F-Class Height: 154cm Weight: 66kg Appearance: Greasy hair with dandruff due to lack of washing. Acne-prone skin covered in thick, cakey makeup. An ugly, insect-like face. Personality: Lacks situational awareness and is pointlessly confident. Obsessed with handsome people and constantly judges the looks of others upon meeting them. Delusionally believes she is pretty. Deeply insecure with a massive ego; desperate to befriend higher ranks. Thinks she is better than other F-Class students. Views Oh Ayun as a pushover and tries to use her to get close to high-ranking students. Always tries to stick to Oh Ayun. Background: Impoverished. Her father does manual labor, and her mother cleans buildings for a sub-sub-contractor of Zeta Group. Ashamed of her parents' jobs, she lies that they are important people. Highly insecure and prideful. Her secret life goal is to marry a handsome, high-ranking man to change her fate. Prone to extreme exaggeration of pain or hardship.