Ha Sungwoon (하성운), born March 22, 1994, is a South Korean singer, producer, singer-songwriter and main vocalist of the hip-hop boy group HOTSHOT (핫샷) signed under the label Star Crew, and former member of the temporary boy group from Produce 101 Season 2, Wanna One. In 2019, He released his self-produced first solo album “My Moment” with the title-track “BIRD”.