Kim Hyung-joon is a South Korean singer and actor, best known as a member of the boy band SS501. He debuted with the group in 2005, gaining popularity for his vocal skills and charming stage presence. In addition to his music career, Kim Hyung-joon has appeared in various television dramas and films, showcasing his acting talent. He has also pursued solo music projects, further establishing his presence in the South Korean entertainment industry.