Shock G

Gregory Edward Jacobs, known professionally as Shock G and by his alter ego Humpty Hump, was an American rapper and musician 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 he was a co-producer of 2Pac's debut solo album 2Pacalypse Now (1991).