Shock-G could probably be called DU's center, their driving force, along with his Humpty Hump alter-ego. DJ Fuze, Money B, Schmoovy Schmoov, Chopmaster J, were some of the group's main members, and they were joined by many friends on their albums over the years. Their third single, The Humpty Dance, from their 1990 debut album called Sex Packets, was their biggest commercial hit. It helped Sex Packets go platinum by the end of the year. Tupac Shakur (then simply 2Pac) got his start with the Underground's second release, 1991's This Is An EP Release.