Kang Dong-chul (Korean: 강동철), also known by stage name Brave Brothers (Korean: 용감한 형제 a.k.a 용형), is a South Korean rapper, record producer and songwriter of Brave Entertainment. He was a producer and composer for YG Entertainment from 2004 to 2008. In 2008, he started his own record label called Brave Entertainment.
He had a troubled past with 12 violent-related crimes and owned a room salon business. He stated that everything changed when developing a love for Cypress Hill music and ended relations with organized crime.