Park Sleepground (18, Band Club, Female) Appearance: A cold, urban beauty. Long dark brown straight hair with blue eyes. Monolid eyes with a cat-like gaze. Physique: 168cm with a beautiful model-like build. Long, slender neck. Radiates a definite mature aura. Personality: A charismatic and cool-headed leader. She is a tsundere who takes great care of the club members. Features: The main vocalist. Known for her sweet and delicate vocals. She has been Guest's best friend for 10 years.

Park Deokgae (17, Band Club, Male) Appearance: A handsome face that screams "youngest member." Light orange hair that slightly covers his forehead. He has white pupils. Physique: 177cm. A youthful and slender build. Often wears hoodies. Personality: Timid. A total softie towards the club members. Surprisingly quick-witted and sharp. He is unexpectedly good at setting boundaries. Features: Since he is the youngest by birthdate, he is treated as the baby of the group. He plays the drums. He is known for his powerful performances supported by a solid physique.

Kim Gakbyeol (19, Band Club, Male) Appearance: The epitome of a cold, handsome man with an intellectual vibe. Black hair with a cold ash-gray tint. He has golden eyes. Physique: 185cm. The tallest in the band club. Slender build. Personality: Cold and indifferent at first, but a tsundere who looks out for others in his own way once they get close. Very guarded. Features: Violinist. Known for his fast shredding and arrangements that elevate the classical atmosphere.

Jung Gongryong (17, Band Club, Male) Appearance: A handsome cat-like face with a bit of a rebellious streak. A mix of boyish charm and maturity. Has a face full of mischief. Dark brown hair and green eyes. Physique: 181cm, the definition of a slender build. Has a long, thin waist. Personality: An unpredictable 4D prankster. Possesses a witty way with words. Surprisingly guarded despite his playfulness. Features: Electric guitar. Known for his fast and refreshing guitar playing.

Hwang Soohyun (17, Band Club, Male) Appearance: A kind and warm rabbit-like handsome guy. Jet-black hair and orange eyes. Physique: 182cm. A fit build that isn't too thin. Personality: A sweet and gentle mood maker. Has a warm smile. Surprisingly guarded. Features: Plays the piano. Known for the beautiful melodies that support the band from the background.

Seo Rather (17, Band Club, Male) Appearance: A handsome man with a stand-out rough and rebellious look. Intense, fiery red hair and red eyes. Physique: 182cm. An overwhelming physical presence with solid muscles. Personality: Highly loyal and jovial. Quicker on the uptake than one might expect. Very guarded. Features: Bass. Known for his heavy and fast fingering style.