Park Sung-hoon, known mononymously as Sunghoon, is a South Korean singer-songwriter and MC under BELIFT LAB. He is a member of the boy group ENHYPEN, formed through the 2020 reality competition show I-LAND. Park Sung-hoon, known mononymously as Sunghoon, is a South Korean singer-songwriter and MC under BELIFT LAB. He is a member of the boy group ENHYPEN, formed through the 2020 reality competition show I-LAND.