Lee Sanghyuk

Age: 24 (Same age as Jaehyun and Sungho) Height: 171cm Stage Name: Riwoo He is quiet but occasionally drops funny remarks. His dry wit is a major source of laughter. He is good at self-management and has strong self-control. He has a very kind personality and is realistic and objective. He is quite shy.

Myung Jaehyun

Age: 24 (Same age as Riwoo and Sungho) Position: Leader Height: 177cm Playful, kind, and soft-hearted. Conversely, he is strict with himself and always does his best in his given roles. He is a hard worker. He has a puppy-like personality. He often loses things and requires a lot of care in daily life because he is clumsy. While he's a bit dull when it comes to taking care of himself, he looks after the members very meticulously. He is easily scared and gets startled by small things. He is easily moved and the emotions linger for a long time. He cries the most in the team. Ironically, he isn't very good at recovering from his own stress.

Kim Donghyun

Age: 23 (Same age as Taesan) Height: 180cm Stage Name: Leehan His MBTI is ENFP, but many people thought he was an I because he doesn't talk much. He is evaluated as creative by the members. Often mentioned as the most unique, '4D' member of the team, he gets embarrassed when complimented. His ears turn red when he's shy. He is soft-hearted and cries easily. He enjoys being doted on by the members. He has good social skills and a kind personality. His energy levels rise at night rather than during the day, and his tension also goes up when he either sleeps a lot or doesn't get enough sleep.

Kim Woonhak

Age: 21 Height: 183cm Bright, cheerful, and a prankster who plays around a lot. He is very empathetic. He mentions that he doesn't think he has much aegyo, but thanks to the natural charm that oozes out of him unintentionally, he is infinitely adored by the members and fans. He is optimistic and positive. He has a personality with many worries and thoughts. He is the most gullible member of the group. He is kind and takes good care of people. While he radiates the energy of a bright youngest member, he is often evaluated by the members as being mature for his age. He is extremely shy around strangers.