South Korean singer, actor Kim Jeong Hoon, also known as John Hoon, isbest remembered for starring as Lee Yul Prince in such hugely successful drama series Gong. He made his debut in 2000 under the management of Mersenne Entertainment. Since then, he has gathered certain success as a solo singer as well as an actor. He has released up to 23 singles and albums, starred in totally 16 films and television series. Kim Jeong Hoon is also known as an academically gifted idol with an intelligence quotation of 146.
Kim Jeong Hoon dropped out of Seoul National University to attend Chung-Ang University in order to pursue his acting career. At the age of 20, he joined the Mersenne Entertainment and became a member of Duo. When the band split in 2005, Kim Jeong Hoon challenged himself with acting by starring in sitcom A Man and a Woman
He had a marriage with an English wife but did not reveal much about his marriage.