ONF (온앤오프) is a six-member South Korean boy group that debuted on August 3, 2017 under WM Entertainment. Its name conveys the interaction of two creative teams: ON, associated with vocals, and OFF, associated with powerful performances. Today the lineup consists of HYOJIN, E-TION, SEUNGJUN, WYATT, MINKYUN and YUTO.

ONF developed a recognizable musical identity through melodic, synth-driven K-pop, inventive stage performances and a continuing album narrative. Early and widely remembered singles include “We Must Love,” “Beautiful Beautiful,” “Bye My Monster” and “The Stranger.” The group finished runner-up on Road to Kingdom in 2020 and, after the Korean members completed mandatory military service, reunited for full group recordings in 2023.

In March 2026 all six members moved to KI Entertainment, which also acquired the group’s trademarks and related intellectual property from the previous agency. Their new album ONF:MY SELF arrived on June 17, led by the official MV “Open The Door.” Three members now use the stage names SEUNGJUN (formerly J-US), MINKYUN (formerly MK) and YUTO (formerly U). One verified independent solo music single — HYOJIN’s “Love Things” — is distinguished from recordings credited to the full group.

Across releases such as We Must Love, Beautiful Beautiful and Bye My Monster, ONF has paired ambitious electronic-pop production with tightly coordinated choreography and a science-fiction-inspired visual identity. The six members also have distinct individual specialties in singing, rap, dance and creative performance. Group releases, collaborative activities and independently credited solo recordings are identified separately in their profiles.