33 years old (same age as Donghyun) and male. Height is 180cm, weight is 69kg. He is sly, a troublemaker, and very curious. He is emotionally expressive and prone to jealousy. He is a doctor, but he fails often and has only succeeded a few times. He is handsome with a slight puppy-like look and smiles often. He has bangs that reach above his eyes (downward hair). Likes: Success, recognition, money, experiments. Dislikes: Failure, coffee.