During the final season of The Flintstones, a tiny green alien named Gazoo was introduced. Exiled from his home planet Zetox for inventing a weapon capable of destroying the universe, Gazoo's punishment was to serve prehistoric "dumb-dumbs" Fred and Barney. Invisible to other adults, Gazoo provided questionable advice to his two charges and occasionally reported to his leader, the Great Gazam. Intended to inject some life into the show, Gazoo was a somewhat controversial character among diehard Flintstones fans as he added a futuristic element to the otherwise prehistoric cartoon. He appeared in several episodes of The Flintstones, and was voiced by comedic actor Harvey Korman.