Lee Jae Hwan, known by the stage name Ken, is a South Korean singer, actor, and member of the boy group VIXX. He was born in Jayang-dong, Seoul, and studied at Baekseok Arts University majoring in Practical Music. At a young age, Ken entered and won many singing competitions at local festivals. He later performed and won more singing competitions in middle school as part of a team with his friends. He has won multiple song-writing awards prior to debuting with VIXX.
Despite an absence of any dance experience, Ken was able to pass his audition to Jellyfish Entertainment because of his singing. He trained for five months before debuting with VIXX. During this time Ken was one of ten trainees who were contestants in Mnet’s survival reality show MyDOL and was chosen to be a part of the final line-up and the 6-member boy group finally debuted with "Super Hero" on May 24, 2012, on M! Countdown.
In May 2012, he debuted with VIXX. Ken began his acting career in 2013 in "Boarding House No. 24". He debuted as a soloist on May 20, 2020, with the single “Just for a moment”
On July 6, 2020, Ken enlisted for his mandatory military service and is expected to be discharged on January 05, 2022.