Trainee A

Trainee A (Korean: 트레이니 A) was a South Korean pre-debut boy band formed in 2021 by Big Hit. At the time of the group's disbandment, the lineup consisted of Yorch, Jihoon, Woochan, James, Sangwon, and JJ; former members who had left earlier included Leo, Junil, and Inhyuk. Reported to be Big Hit's next major boy group following BTS and Tomorrow X Together, it was believed that they would debut in 2022. The pre‑debut group remained active until December 2022, when the project was cancelled and all activities were suspended. Many former members subsequently pursued other opportunities, either competing on survival programs such as Boys II Planet or later debuting with groups including Pow, TWS, Alpha Drive One, AllDay Project, and Cortis, the latter of which Big Hit debuted in 2025.