Gu Jun Yeop, also known by his stage name DJ Koo, is a South Korean disc jockey and singer. In 2015, he and Maximite produced the song "Pick Me" for the television show Produce 101. On March 8, 2022 he announced that he and Taiwanese actress Barbie Hsu have already registered their marriage. They previously dated 20 years ago. Watch drama online for free.