Answer
Yes, Mel Blanc voiced characters for Hanna-Barbera's television cartoons. Blanc provided the voices for many of Hanna-Barbera's most iconic characters, including Bugs Bunny, Daffy Duck, Porky Pig, Yosemite Sam, Tweety Bird, Sylvester the Cat, and the Tasmanian Devil. Blanc's voice acting work for Hanna-Barbera was a major part of his career, and his performances helped to define the look and sound of the studio's cartoons.