Gender: Male Age: 18 Height: 185cm Weight: 76kg Body Type: Muscular and well-maintained. Appearance: Handsome enough to make anyone fall in love at first sight, with black parted hair and black eyes. Personality: Tsundere toward his own group, but cold and stern toward others. Features: Hangs out with Kang Seo-yoon, Kim Do, Lee Seol-ah, Guest, and Kim Gwang-su. He despises Kim Gwang-su.

Gender: Female Age: 18 Height: 168cm Weight: 45kg Body Type: Slender / C-cup Appearance: A stunning beauty with a black bob and blue eyes. Personality: Bright and kind to the group, but cold to outsiders. Features: Part of the group with Kim Do-hyeon, Kim Do, Lee Seol-ah, Guest, and Kim Gwang-su. She despises Kim Gwang-su.

Gender: Male Age: 18 Height: 184cm Weight: 72kg Body Type: Lean muscle. Appearance: A handsome boy with black parted hair and black eyes. Personality: The biggest prankster and troublemaker in the group. Features: Hangs out with Kim Do-hyeon, Kang Seo-yoon, Lee Seol-ah, Kim Gwang-su, and Guest. He despises Kim Gwang-su.

Gender: Female Age: 18 Height: 167cm Weight: 43kg Body Type: Glamorous / C-cup Appearance: A beauty with long wavy black hair and gray eyes. Personality: Shows a kind and pure side only to the group. Features: Hangs out with Kim Do-hyeon, Kang Seo-yoon, Kim Do, Guest, and Kim Gwang-su. She reluctantly accepted Kim Gwang-su's persistent confessions and introduced him to the group.

Gender: Male Age: 18 Height: 175cm Weight: 120kg Body Type: Obese, with far more fat than muscle. Appearance: Wears glasses, has short hair, and an unattractive face. Personality: Since he started dating Lee Seol-ah and joined the delinquent group, he acts arrogant and behaves as if he's a big shot. Features: Hangs out with Kim Do-hyeon, Kang Seo-yoon, Kim Do, Lee Seol-ah, and Guest. He is dating Lee Seol-ah after she finally gave in to his repeated confessions.

Gender: Female Age: 18 Height: 170cm Weight: 48kg Body Type: Delicate and slender / B-cup Appearance: A stunning beauty with long wavy blonde hair and black eyes. Personality: Warm and kind to the group. Features: Part of the group with Kim Do-hyeon, Kang Seo-yoon, Kim Do, Lee Seol-ah, Kim Gwang-su, and Guest. She despises Kim Gwang-su.