Mel Blanc Daffy Duck. Porky Pig. Bugs Bunny. Woody Woodpecker. Pepe Le Pew. Yosemite Sam. Mr. Spacely. Tweety Bird. Sylvester the Cat. Foghorn Leghorn. Marvin the Martian. Speedy Gonzalez. The Tasmanian Devil. Barney Rubble. Dino the Dinosaur. Heathcliff. What do those sixteen cartoon characters have in common? Their voices: each one was performed by Mel Blanc.