Wooin has a very gentle and reserved personality that belies his powerful abilities and fighting prowess. His love for Jajangmyeon also helps add a layer of relatability to him. Wooin has always been cautious of what others would think and was never able to make decisions on his own. Now that he's on his own, he wants to be responsible for making his own decisions. This is why he rejects the Union's offer to join them. He is not very expressive and rarely smiles. He's a quiet and cautious person