Park Sun-young (born August 12, 1993), known professionally as Luna, is a South Korean singer, musical actress, television presenter and youtuber. She debuted as a member of girl group f(x) in September 2009. Apart from her group's activities, Luna has established herself as a musical actress, notably through her participation in the original and Korean versions of stage musicals including Legally Blonde, Coyote Ugly, High School Musical on Stage!, In the Heights, Rebecca, Rudolf (The Last Kiss) and Autant en emporte le vent (Gone with The Wind). She also starred in the film The Lightning Man's Secret (2015). In 2016, Luna released her debut extended play Free Somebody. In September 2019, Luna left SM Entertainment and joined Humap Contents to embark on her journey as solo artist.