Yoon Doo-joon is a South Korean singer, actor, and television personality, best known as the leader of the boy group Highlight. He debuted in 2009 under the name Beast, which gained significant popularity in the K-pop industry. Yoon is recognized for his strong vocals and charismatic stage presence. In addition to his music career, Yoon Doo-joon has appeared in various television dramas, showcasing his acting skills. Some of his notable works include Let's Eat and Mystic Pop-up Bar. His versatility in both music and acting has earned him a dedicated fanbase in South Korea and beyond.