Park Chae-won (박채원), also popularly known as Go Won (고원), is the eleventh revealed member of LOONA and a member of its third sub-unit, LOONA / yyxy. She is a South Korean singer. In September 2023, she redebuted in Loossemble under the CTDENM label. Park Chae-won (박채원), also popularly known as Go Won (고원), is the eleventh revealed member of LOONA and a member of its third sub-unit, LOONA / yyxy. She is a South Korean singer. In September 2023, she redebuted in Loossemble under the CTDENM label.