Which regular on the 1967-1973 U.S. TV series "Laugh-In " was the voice of the star on the 1960s U.S. cartoon series "Space Ghost"?

Movies & TV Trivia Question: Which regular on the 1967-1973 U.S. TV series "Laugh-In " was the voice of the star on the 1960s U.S. cartoon series "Space Ghost"?