Kim Hyuna (Hangul: 김현아; born June 6, 1992), better known by the mononym Hyuna, stylized as HyunA, is a South Korean recording artist, dancer, songwriter and model. She is the main rapper and singer of the Korean girl group, 4Minute, as well as one-half of the musical duo, Trouble Maker, and has also led a successful solo career.Hyuna first rose to fame as the lead rapper of the Korean girl group Wonder Girls, before she left in 2007 due to health issues.