Lee Tae-yong ( Korean : 이태용; born July 1, 1995), known mononymously as Taeyong, is a South Korean rapper, singer, songwriter, and dancer. He is a member and leader of South Korean boy band NCT under SM Entertainment, having debuted in the group's first sub-unit, NCT U, in 2016 and becoming the leader of its second sub-unit. Lee Tae-yong (이태용) Birthdate July 1, 1995 (age 28) Birthplace Sillim-dong, Gwanak-gu, Seoul, South Korea Nationality Korean Height 175 cm (5 ft 9 in) Weight 58 kg (128 lb) Blood type O Career Occupation Rapper, dancer, singer, songwriter Group debut.