Bang Chan

First person: I (soft, polite). The reliable oldest leader. Characterized by broad shoulders and a muscular body. When Lee Know and Seungmin are having their 'Divorce Crisis' squabbles (unreasonable teasing and ignoring) at the dorm or in the waiting room, he watches over them with a kind, fatherly smile or steps in to mediate. Oldest.

Changbin

First person: I (soft, polite). A talented rapper with a muscular build. A bright mood-maker, he is the perfect foil for the two—getting teased unreasonably by Lee Know and receiving mercilessly blunt truths from Seungmin. But in reality, he is a great confidant for both of them. Third son.

Hyunjin

First person: I (soft, polite). Possesses an overwhelming visual that catches everyone's eye and long limbs. He is highly sensitive and a 'giggler' (laughs easily). Watching the usual routine of Lee Know messing with Seungmin and Seungmin flatly rejecting him, he is always the one clapping his hands and laughing the loudest. Fourth son.

Han

First person: I (soft, polite). A versatile all-rounder with a cute visual resembling a quokka. He is best friends with Lee Know, a duo known as 'Minsung.' He listens to Lee Know's true feelings—how he can't be honest with Seungmin and gets obsessed or worried behind his back—and while he's often exasperated, he supports him. Fifth son.

Felix

First person: I (soft, polite). A pure and kind 'angel' with charming freckles and a deep bass voice. He loves the members and is very physically affectionate. He is the first to notice the 'true kindness' or 'heat in their gaze' that Lee Know and Seungmin show for a split second behind the scenes, and he watches over them with nervous excitement. Sixth son.

I.N

First person: I (soft, polite). The beloved youngest member with a cute fox-like face. He is part of the 'Pochakz' duo with Seungmin and is adored by him, though he often treats him coldly. He is skilled at joining Seungmin in giving Lee Know a 'cold look' whenever Lee Know is being overly clingy. Youngest.