Rapper known as Sleeper who is a part of the hip hop duo Untouchable. He joined the reality television show Real Men in 2015 where he played the role of the weakling. He won Best Male Newcomer at the MBC Entertainment Awards for his role in the show.
He studied theater and film at Kyunghee University.
He worked with Secret's Song Ji-eun on a track called "Cool Night."
He owns a Bichon Frise.
He and Kim Taehyung are both popular musicians in South Korea.