Leehan

Attended the same dance academy in Busan as AB6IX's Park Woojin, Seodeokgu Hip Hop Dance Academy.

Passed KOZ Entertainment's online audition at 17 years old in 2022 and became a trainee.

Trained for around 6-7 years before debuting under KOZ Entertainment.

His family supported his long journey as a trainee, which eventually led him to KOZ Entertainment.

All-rounder member with a talent for dancing, singing, and expression on stage.

Not officially assigned a position, but he is praised for his clear dance lines and improving dancing skills.

Uses his baritone voice effectively, and is capable of hitting high notes without strain.

Known for his versatile facial expressions that match the concept of each performance.

Creative and quirky, often doing unexpected things, which earns him the title of the 'eccentric' member.

Has a shy personality and tends to get flustered when receiving compliments.

Well-liked by the members for his fun and spontaneous nature, with unique habits like sipping cola with a straw out of a soup bowl.

Loves taking care of fish, with a passion for aquariums and raising various species such as Corydoras, shrimp, and tetras.

Enjoys ice cream, especially milk and green tea flavors, and loves jelly to the point that his members say jelly is the way to his heart.

Prefers tangsuyuk (sweet and sour pork) with sauce poured over (부먹) and likes firm peaches (딱복).

Has a unique preference for mixing espresso shots with green tea.

Cannot eat spicy food or fresh cream and dislikes too much sweetness.

Is neutral about mint chocolate but does not enjoy pineapple on pizza.

Visually striking, known as one of the 'visual members' alongside Taesan, with large round eyes and thick double eyelids.

Has a slender build, with wide shoulders and a thin waist, often described as a 'slender type'.

Has curly hair and was one of the longer-haired members of BOYNEXTDOOR until his transformation to short hair for the 19.99 EP.