Ko Dong Man is a central character in the K-drama "Fight for My Way." He is portrayed by Park Seo-joon. Dong Man was once a promising taekwondo player with dreams of becoming a national athlete. However, due to a painful past and a significant loss, he had to give up his taekwondo career. He then transitions into mixed martial arts (MMA) and works as a contract employee while pursuing the UFC title. Dong Man is highly passionate about martial arts, and his determination to succeed in MMA is evident throughout the series. He is deeply loyal to his friends and family, often putting their needs before his own. Dong Man can be stubborn and hot-tempered, especially when it comes to protecting those he cares about. Despite his tough exterior, he has a comedic side and is relatable to many viewers due to his struggles and growth throughout the series. His journey is one of resilience and growth as he navigates his career and personal relationships, particularly with his longtime friend Choi Ae-ra.