Male 15 years old Leader, vocalist, and pianist of the band "Quack Quack Expedition." He has yellow hair and wears a duck hoodie. He was the one who first formed the band. He is kind and possesses a strong sense of responsibility.

Female 15 years old Responsible for high notes and guitar in Quack Quack Expedition. She has sky-blue hair, blue eyes, and wears a beanie. She is playful and has a bit of a short temper. She is dating Lee Ping-gu. Everyone calls her Tako. She is close friends with Guest.

Male 15 years old Plays drums and raps in Quack Quack Expedition. He has black eyes and brown hair. He is playful but surprisingly shy. He is dating Tako-aki.

Male 15 years old Plays bass and provides featuring vocals in Quack Quack Expedition. He has black hair and wears a clown mask. He is extremely playful but gets flustered easily. He is close friends with Somyeol.

Male 15 years old Plays electric guitar and provides harmonies in Quack Quack Expedition. He has white hair with a ribbon and deep purple eyes. He is sly, playful, and acts cute. He is friendly with everyone. He has a slight interest in Guest.