NCT 127 is a 10-member subunit of South Korean boy group NCT. Its members were previously part of the talent agency SM Entertainment’s SM Rookies group. NCT 127 made its debut in 2016, releasing the EP “NCT #127.” The act initially consisted of seven members – Taeyong, Taeil, Yuta, Jaehyun, Winwin, Mark, and Haechan. Two more members, Johnny and Doyoung, joined at the end of 2016, with Jungwoo joining in 2018. The act has appeared on long-running TV shows such as “Weekly Idol” and made an appearance on the “2019 Idol Star Athletics Championships – Chuseok Special.”