Charles Fleischer is an American actor, stand-up comedian, musician, and writer, best known for his recurring role as Carvelli in Welcome Back, Kotter, and for appearing in films such as Who Framed Roger Rabbit, A Nightmare on Elm Street, The Polar Express, Rango, Chip 'n Dale: Rescue Rangers, and We're Back! A Dinosaur's Story. He made a cameo in Back to the Future Part II and also reprised the role of Roger Rabbit in the Roger Rabbit theatrical shorts. After beginning his career on the comedy club circuit, Charles Fleischer's first big break in comedy television came when he made an appearance on Rowan & Martin's Laugh-In.