Lee Byung-hun (Korean: 이병헌), known mononymously as Byung Hun, is a South Korean actor and singer. He debuted as a member of the South Korean boy band Teen Top in 2010 under the stage name L.Joe and left in 2017 until he nullified his contract with TOP Media.

Teen Top (Korean: 틴탑) is a South Korean boy band formed by TOP Media in 2010. The group is composed of four members: Chunji, Niel, Ricky and Changjo. Originally a six-piece group, L.Joe had filed for contract termination in February 2017, and former leader C.A.P. left the group on May 11, 2023. Teen Top debuted with their first single album Come into the World on July 9, 2010.