ONF (온앤오프), is a 6-member South Korean boy group under WM Entertainment. The group consists of Hyojin, E-Tion, Seungjun, Wyatt, Minkyun, and U. Laun left the group in late August 2019. ONF has 2 leaders (Hyojin and Seungjun), and is divided into 2 sub-units: ON Team and OFF Team. The group debuted on August 3rd, 2017.