NCT U is the first sub-unit of the South Korean boy group NCT formed by undefined in 2016. All the members of NCT are part of the line-up, members change depending on the song's concept. They debuted on April 9, 2016 with the single 일곱 번째 감각 (The 7th Sense).
Members : Taeil (태일), Johnny (쟈니), Taeyong (태용), Yuta (유타), Kun (쿤), Doyoung (도영), Ten (텐), Jaehyun (재현), Winwin (윈윈), Jungwoo (정우), Lucas (루카스), Mark (마크), Xiaojun (샤오준), Hendery (헨더리), Renjun (런쥔), Jeno (제노), Haechan (해찬), Jaemin (재민), Yangyang (양양), Shotaro (쇼타로), Sungchan (성찬), Chenle (천러), Jisung (지성).