Yoon Sung Mo is a South Korean singer and actor who was born on June 15, 1987, in Busan, South Korea. He studied at Kyung Hee Cyber University and made his musical debut as part of the five-member boyband Supernova. He made his acting debut in the 2011 drama series “Sign,” and has since followed up with roles in the movie “Our Diary” in 2017 and the melodrama series “Lie After Lie” (2020).