Kim Da-hyeon, better known mononymously as Dahyun, is a South Korean singer and rapper. She is a member of the South Korean girl group Twice, under JYP Entertainment formed by the reality show Sixteen. In Gallup Korea's annual music poll for 2017, Dahyun was voted the 17th most popular idol in South Korea. In 2015, Dahyun competed in Sixteen, a survival girl group reality show which determined the members of JYP Entertainment's new girl group, Twice. In the final episode of the event, she was selected to be one of the Twice members. On October 20, 2015, Twice officially debuted with the release of their first mini-album, The Story Begins and the main song "Like Ooh-Ahh". Their debut showcase was held on the same day.