Lee Donghyuck (Korean: 이동혁; born June 6, 2000), better known by his stage name Haechan, is a South Korean singer. He is a member of the South Korean boy group NCT and its fixed sub-units NCT DREAM and NCT 127, debuting on July 2016 as a member of Seoul-based fixed unit NCT 127 and as a member of NCT DREAM on August 2016.