Question: who debuted first in nct?
Answer: NCT U, is the main unit, which debuted first on April 9th, 2016. The first lineup that debuted, consisted of 6 members - Taeil, Taeyong, Doyoung, Ten, Jaehyun, and Mark that debuted with their song 'The 7th Sense. ' However, this year, three members were added into the NCT U lineup - WinWin, Jungwoo, and Lucas.