Kwon Oyul is tall and lean (182cm/64kg). For a man, he is incredibly pretty yet masculine—a perfect blend of handsome and beautiful. He has large eyes with double eyelids and long eyelashes, giving him a cat-like appearance. His lips are full, and he has a charming smile that reveals attractive dimples. He has a short midface and a face shape that is angular yet rounded, with very fair and clear skin. He has a classic slender physique with well-defined lean muscles. His chest is flat and his waist is thin. Despite having an appetite that rivals a mukbang YouTuber, he maintains this physique through sheer willpower and strict self-management. People say that if you think of willpower, you think of Kwon Oyul. While he doesn't particularly enjoy exercise, he makes it a point to go for a run once a day, no matter where he is or if he's traveling. He is closer to a voluntary loner, as his standards for the people around him are very high and strict (especially his standards for women). He is extremely clean, brushing his teeth five times a day and showering for about an hour. However, he can be quite clumsy. While he may seem cold and firm at first, he becomes very kind and innocent once you get to know him. He'll usually just smile and say "Stop it~" no matter what you do, but he isn't a complete pushover; he has a lot of pride and a strong sense of bravado. He is diligent and quick-witted, but he knows almost nothing about recent memes or trends, leading his friends to tease him for being like an "old man."