Kim Jeong-hoon

Kim Jeong-hoon (Korean: 김정훈; born January 20, 1980), also known by his stage name John Hoon, is a South Korean singer and actor. He initially rose to fame as a member of South Korean duo UN debuting with the single Voice Mail in 2000. After the duo disbanded in 2005, his fame increased as an actor starring in Princess Hours, a drama based on a manhwa.