K-pop star and reality contestant best known as the rapper behind the three-man boy group Hive. He also was a finalist on the South Korean series Show Me the Money season three.
His earliest musical appearances were in 2010 on singles with his friend and fellow rapper Kim Namjoon.
Despite not winning Show Me the Money, his single "Venom" peaked at #1 in Korea after it debuted on the show.
His stage name is Iron.
For the semi-final of Unpretty Rapstar, he and Shin Ji-min performed the single "Puss."