Gregory Edward Jacobs (August 25, 1963 – April 22, 2021), known professionally as Shock G (and his alter ego Humpty Hump), was an American musician, rapper, and lead vocalist for the hip hop group Digital Underground. He was responsible for Digital Underground's "The Humpty Dance", 2Pac's breakthrough single "I Get Around", and was co-producer of 2Pac's debut album 2Pacalypse Now.