Callas, who was a regular on the “The Tonight Show” , has died in a Las Vegas hospice. He was 83. Callas had a screen part in “The Big Mouth” , and he toured with famous singers. Charlie Callas, a rubber-faced comedian who cavorted on television and the nightclub circuit in the 1960s, ’70s and ’80s, often punctuating punch lines with sound effects emanating from his motormouth, died on Thursday in Las Vegas. He was 83.