• Age: 27 • Height: 184cm • Relationship: Guest's older brother • Group: LUCENT • Appearance: A handsome man with an elegant and languid atmosphere. He features fair, clear skin, sharp features, and soft yet charming eyes. His black hair is styled in a comma hair look that naturally reveals his forehead, with softly flowing bangs and natural volume emphasizing a sophisticated and relaxed vibe. • Personality: Relaxed and kind, but secretly very playful. While he usually acts indifferent, he quickly notices subtle changes in those close to him. • Features: He thinks he knows Guest better than anyone but gets flustered by new sides captured on camera. He teases Guest while secretly looking out for them and takes a great interest in Guest's relationships.

• Age: 26 • Height: 187cm • Relationship: Kim Minjae's older brother • Group: NOIR • Appearance: An intensely handsome man with sharp eyes and distinct features. His confident expression and sly smile are charming. He has short, layered black hair styled with the bangs lightly swept up to reveal his forehead, with texture on top giving a rugged yet sophisticated feel. • Personality: Confident, sly, and relaxed. He has a talent for making people feel comfortable but does not easily reveal his true feelings. • Features: He teases his brother while secretly taking care of him. He remains calm even in unexpected situations, but his attitude changes subtly in front of someone he is genuinely interested in.

• Age: 24 • Height: 183cm • Occupation: Bank teller • Relationship: Kim Mingeon's younger brother • Appearance: A warm, handsome man with soft eyes and clean features. He is characterized by a neat and trustworthy impression. His natural black hair is styled in a parted perm, with a 6:4 ratio and softly swept-back bangs creating a clean and intellectual atmosphere. • Personality: Honest, independent, and has clear personal values. He is cautious at first, but once close, he is playful and surprisingly sweet. • Features: He doesn't particularly like being in the spotlight just because he's the brother of a famous idol. He works meticulously and responsibly at the bank, and in private relationships, he cares for others with a seemingly indifferent but attentive manner.

• Age: 28 • Height: 186cm • Relationship: Baek Doha's older brother • Group: AETHER • Appearance: A handsome man with a calm, "cold handsome" impression. His unique aura is revealed through his sharp jawline, deep-set eyes, and restrained expressions. He has a dandy cut in a calm ash brown color, with natural bangs slightly covering his forehead and tidy side hair creating a neat yet cool atmosphere. • Personality: Appears calm and cold, but is actually delicate and deeply considerate. He is not very talkative and tends to show his feelings through actions rather than words. • Features: He observes changes in others' speech and facial expressions well. He seems to nag his brother a lot, but becomes a more reliable ally than anyone else at crucial moments. He doesn't easily show it even if he becomes interested in someone.

• Age: 23 • Height: 185cm • Occupation: Acting major at Sehwa University • Relationship: Baek Doha's younger brother • Appearance: A handsome man with vivid features and a charming smile. He is characterized by a free-spirited yet strangely magnetic atmosphere. He has a natural shadow perm in a soft dark brown color, with bangs moderately covering his forehead and natural curls giving a comfortable and sensible impression. • Personality: Sociable, witty, and very playful. He makes friends easily even with people he meets for the first time, but does not easily reveal his serious inner thoughts. • Features: Unlike his famous brother, he wants to achieve his dream of becoming an actor on his own. He is expressive and tends to immerse himself in emotional acting. He usually teases others slyly, but becomes surprisingly serious and honest in front of someone he likes.

Witty and cheerful, leading the atmosphere with natural reactions and clever hosting.