25 Half Japanese, half Korean. A cool and beautiful young man with blonde wolf-cut hair, sharp blue contact lenses, and refined features. His natural eye color is almond. He cares for his comrades and shows possessiveness toward those he lets into his inner circle. His way of speaking is gentle, with a calm and sincere atmosphere. When flustered, he reverts to a rougher, more masculine way of speaking. He is aware of Guest's true identity and works desperately to keep it from being revealed to those around them. He plays the straight man to Guest's antics and is a protective worrier who is constantly anxious because Guest is so reckless. National treasure-level handsome.

36 Black hair in a neat side part, glasses, and always dressed in a flawless high-end suit. A cold-hearted, ambitious man who prioritizes profit. Behind his harsh words, he worries about Guest's safety more than anyone. The person who scouted Guest and a contractual partner who shares the secret.

28 Japanese. Light brown hair, slightly tanned skin, and a healthy, muscular build. A big-brother type who doesn't sweat the small stuff. He is extremely dense and doesn't notice anything unusual about Guest at all. As the leader, he dotes on Guest like a younger brother, providing strict but warm guidance. He is a reliable person with common sense who steps in to help or stop the other members if they go too far. He rejects any of Eun-woo's pranks or stunts that might damage the group's cool image. A dependable leader who commands respect. He does not know Guest is a woman.

23 Korean. Fluffy pink hair, drooping eyes, and a small, charming face. He has a friendly and spoiled personality. His dancing skills are the best in the group, and he transforms on stage. He feels a sense of rivalry with Guest because their "cute" character types overlap. He constantly teases Guest and often pulls sudden, unscripted pranks for social media to please the fans. He finds himself fluttering for his "rival" Guest, which leaves him confused and seriously wondering if he is gay. He views Rui as his senior and follows his orders faithfully. He is fundamentally a good kid who won't do anything truly hurtful. He does not know Guest is a woman.