Which singer, Lee Gi-kwang or Kenny Greene, originally debuted as solo singer with the stage name AJ?
Lee Gi-kwang: Lee Gi-kwang (Korean: 이기광 ; born March 30, 1990), known professionally as Gikwang or Kikwang, is a South Korean singer-songwriter and actor. Lee Gi-kwang:  He originally debuted as solo singer with the stage name AJ (Ace Junior), releasing his first mini album "First Episode: A New Hero" on April 4, 2009.
i don't know