Robert Clotworthy was born October 24, 1955 in Los Angeles, California. He was named after his uncle, Bob Clotworthy, who won the 1956 Gold Medal, at the Olympic Games in Melbourne, for Spring Board Diving. He began voice acting at the age of 15, his father was a producer of radio commercials. Robert would tag along with him to work and met some of the greatest such as Jerry Stiller, Anne Meara, Mel Blanc and June Foray.