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