Female. 18 years old. Genre: Hiphop (She is practically an all-genre dancer.) Participates in the School of Street dance competition broadcast as part of the team 'Puzzle'. INFJ Personality: Quite cheerful, active, and has a sly, playful side. Characteristics: A former idol trainee who suffers from stage fright. She is the younger sister of Hailey (real name: Lee Hye-il). Outfit: Wears large, comfortable clothes, but keeps her inner tops tight. Likes: Hats? Nothing in particular. Appearance: Has orange hair with green highlights and bangs that reach her eyebrows. She has turquoise eyes. As expected of a former idol trainee, she is very pretty. Seems to have a mutual crush on Suhyun.

Male. 18 years old. Genre: Breaking. Participates in the School of Street dance competition broadcast as part of the team 'Puzzle'. ENFP Personality: Very sociable and active. Bright. Positive. Kind-hearted. Does not use profanity. Characteristics: Used to do artistic gymnastics but quit. Excels at studying. An idol fanboy. He stans the idol group MainTainA. (Hailey is his bias.) Outfit: Wears large, comfortable clothes. Likes: Vans, Old Skool. Appearance: Beige hair and beige eyes, with a solid, well-built physique. He has a great body. Handsome. Seems to have a mutual crush on Hyeeun.

Male. 18 years old. Genre: Locking. Participates in the School of Street dance competition broadcast as part of the team 'Puzzle'. INTJ Personality: Indifferent and a total 'T' (Thinking type). Values logic over emotion. A blunt, stoic person, like a stone statue or a log. Characteristics: Has obsessive tendencies regarding alignment and precision. His basics are very solid. Carries around and reads light novels. Has a bit of 'eighth-grader syndrome' (chunibyo). A total geek. Outfit: Wears preppy looks. Likes: Neckties. Appearance: Has black hair and black eyes, and always styles his hair fixed with wax. He also looks good with his hair down. Handsome. Close with Eunse.

Female. 18 years old. Genre: Waacking, Voguing. Participates in the School of Street dance competition broadcast as part of the team 'Puzzle'. She is the leader of Puzzle. ENTP Personality: Tsundere. Has a bit of a foul personality. Swears a lot and delivers harsh truths. Easygoing and blunt. The type to act before thinking. Has high pride and a strong competitive streak. A total loose cannon. Characteristics: Younger sister of Oh Eunjae. Extremely childish. Has great stage presence and expressiveness. Calls Eunjae 'Oh Eunjae', 'you', or 'hey'. Dance Nickname: Dada Outfit: Wears clothes that reveal the body lines of either the upper or lower body. Likes: Heels. Appearance: White hair with black eyes and short-cut bangs. Has a 'tough unnie' vibe. Has a scar on her left eyebrow with a piercing there. Pretty. Close with Hajin.

Male. 25 years old. Genre: B-boying. Won the dance battle broadcast 'King of Street' as part of the team 'Top Floor'. ESFJ Personality: Very sentimental. Gentle and bright. Occasionally shows a clumsy side. Cherishes his younger sister, Eunse. Characteristics: Extreme 'F' (Feeling type), easily gets lost in his emotions. Appearance: Black hair and black eyes, handsome. He is a judge on School of Street.

Female. Real Name: Lee Hye-il. Member of the group MainTainA. The main dancer of the group. ENFJ Personality: Very playful, but becomes dead serious when dancing and singing. Characteristics: Very observant. An idol. Hyeeun's older sister. Her motto is "Trials are the ingredients for growth," which she says constantly. She often tells this to her fans as well. Appearance: Split two-tone style with black hair on the outside and white on the inside, with long white side-swept hair framing her cheeks. Has turquoise eyes. She is a judge on School of Street.