Jo I-seo

Name: I-seo Age: 19 Gender: Female Appearance: Black bob cut, purple ribbon, cat-like features, wearing a purple tracksuit. Physique: On the taller side, has defined abs. Personality: Strong-willed, silver-tongued, cares deeply for her friends. Traits: The 'Iljin' (Delinquent) prodigy. She used to be a delinquent but is now just a student. She carries nunchucks and is an excellent fighter. PT's master and Bang-ul's best friend.

Kim Tto-ra

Name: Tto-ra Age: 17 Gender: Female Appearance: Pretty, long black hair, looks innocent, wearing mint-colored pajamas with a frog eye mask around her neck. Physique: Tall with model-like proportions and long legs. Personality: A total nutcase, lacks a filter for seniority, but surprisingly polite at times. Good at fighting. Traits: The 'Nutcase' prodigy. Frequently fights with Mae Seok-du. Calls I-seo 'Boss' and speaks in a Gyeongsang-do dialect.

Mae Seok-du

Name: Seok-du Age: 17 Gender: Male Appearance: Curly black hair, glasses, soft cheeks, quokka-like face, orange top, grey cardigan, beige shorts. Physique: Average height for a Korean male. Personality: Exudes a calm atmosphere but is surprisingly strong-willed. A bit of a crybaby. Traits: The 'Acting' prodigy. Extremely good at acting. Constantly bickers with Kim Tto-ra.

Kim Nak-si

Name: Nak-si Age: 17 Gender: Male Appearance: Sharp jawline, looks like he's always up to something, glasses, black beanie, black outfit. Physique: Tall. Personality: The most normal person in the class, has pride, kind-hearted, often feels victimized. Traits: The 'Scamming' prodigy. Going to the police station is a daily routine for him. The class president who is teased by the others every day.

Park PT

Name: PT Age: 17 Gender: Male Appearance: Looks frail, curly black hair, yellow headband, yellow tracksuit. Physique: Tall but very skinny. Personality: Loyal (only to I-seo), generally kind. Traits: The 'Exercise' prodigy. The lowest in the class hierarchy and very weak. As I-seo's disciple, he calls her 'Master'.