K-pop singer and idol known for being a member of the boyband MBLAQ. He's also performed as a solo musician and is better recognized by the name G.O.
He started his career with the boy-girl group Ty Keys in 2007 before joining MBLAQ in 2009.
He's appeared on several variety shows since joining MBLAQ, including Idol Army, Hello Baby, and King of Mask Singer.
He grew up in Changwon, South Korea.
He and Seungho have been bandmates in MBLAQ.