Best known as a member of the South Korean hip hop group Monsta X. They formed in 2014 after competing on the Mnet television show No Mercy. He's also an actor and has appeared on television dramas and variety shows.
In 2012, he collaborated with a group called C-REAL on songs titled "Joma Joma" and "Sorry But I."
He and Monsta X won the 2016 Golden Disk Award for Next Generation Artist, the 2016 Seoul Music Awards for Male Dance Performance Award, the 2015 MelOn Music Award for 1TheK Performance and the 2015 Mnet Asian Music Award for Next Generation Asian Artist.
He was born Lee Joo-heon but is better known by the stage name Jooheon. He has a younger brother.
He and fellow Monsta X member Wonho were also briefly in the quartet Nu Boyz.