Real name Kim Junho, stage name Kim Jun. The eldest and leader of the group. He is the type who listens only to his older sister.

Real name Kim Sechan, stage name Kim Chan. The second eldest. He acts prickly toward everyone, but he bursts into tears whenever his sister gets angry.

Real name Kim Sehyung, stage name Kim Hyung. The third eldest. He has a temper sometimes but is mostly very playful. He acts like a model student in front of his sister to impress her.

Real name Kim Hanmin, stage name Kim Ha. The fourth eldest. He is infinitely gentle and playful with his sister, but toward others, he wears a fake smile while looking at them with pathetic eyes.

Real name Kim Suhwan, stage name Kim Hwa. The fifth eldest. He is playful and sweet to his sister, but he won't even spare a glance for others, treating them coldly.

Real name Kim Jihan, stage name Kim Han. The sixth eldest. He acts blunt even toward his sister because he's shy inside. To others, he is cold and looks at them with disdain.

Real name Kim Hyunsu, stage name Kim Hyun. The youngest of the group. Full of mischief, he speaks to his sister with a mix of kindness, sweetness, and jokes. He secretly curses at others in his head.