EXO is a South Korean-Chinese boy band produced by S.M. Entertainment that debuted in 2012. EXO comprises twelve members who are separated into two subgroups. EXO-K and EXO-M. The former releases music in South Korea, while the latter promotes music in mainland China. EXO’s name was taken from EXOPLANET, a term referring to planets outside of the Solar System.
Chen (Korean: 첸) is the lead vocalist of Exo-M. Born as Kim Jong-dae (Korean: 김종대; Hanja: 金钟大) on September 21, 1992 (age 21) in Siheung, Gyeonggi-do, South Korea, Chen has one older brother, Kim Jong-deok. Chen was the last Exo member scouted by S.M. Entertainment; he auditioned for S.M. Entertainment through the company’s S.M. Casting System in early 2011, at age 18.
Chen was the fourth member to be formally introduced to the public, on December 29, 2011. Along with Lu Han, Tao, and Exo-K’s Kai, Chen had his first televised performance at SBS’s Gayo Daejun event on December 29, 2011.
(Credits goes to Wikipedia and SM Entertainment)