Lee Jae-hwan, better known by his stage name Ken (Korean: 켄), is a South Korean singer and actor, signed under Jellyfish Entertainment. He is one of the members in the South Korean boy group VIXX, and has been widely praised for his unique, soulful, and husky vocal tone. Ken began his acting career in 2014 in MBC Every 1's comedy drama Boarding House No. 24 as Lee Jae-hwan.

VIXX is a South Korean boy band formed by Jellyfish Entertainment through the 2012 reality show MyDOL. Originally a sextet, the group is currently composed of four members: N, Leo, Ken and Hyuk—former vocalist Hongbin and rapper Ravi left the group and the agency in August 2020 and April 2023, respectively. They are predominantly known as a "concept or performance group" whose music, lyrics, choreography, and overall stage performances are crafted together to tell a story or concept.