Bun B is an American rapper, best known as one half of the southern rap duo UGK (UnderGround Kingz), a group he formed in 1987 alongside Pimp C. Aside from his work with UGK, Bun B has released four solo albums, including 2010's Trill OG, which received the rare 5 mic rating from The Source. He is also a guest lecturer at Rice University, located in Houston, Texas.