Ryu Sung-min, known professionally as C Jamm, is a South Korean rapper born on
February 28, 1993 in Jeju, South Korea. He made his mark in the music industry
with the release of his debut album, Good Boy Doing Bad Things, on July 17,
2015. C Jamm gained further recognition as the runner-up on the popular TV show
Show Me the Money 5, where he was bested by his childhood friend BewhY. His
career took a significant turn when he departed from his label, Just Music, on
March 3, 2022, following the release of the EP Ghenn.