Mel Blanc voiced the majority of classic Looney Tunes characters.
Blanc became Warner Bros.’ defining voice performer during the Golden Age of American animation. His credits included Bugs Bunny, Daffy Duck, Porky Pig, Tweety, Sylvester, Yosemite Sam, Wile E. Coyote, the Road Runner, Foghorn Leghorn, Speedy Gonzales, Marvin the Martian, and many others.
He began working in Warner cartoons in 1937, after building a reputation in radio for character voices and vocal effects. His range allowed one performer to play several characters in the same short, sometimes with radically different accents, rhythms, and vocal textures. He also replaced earlier performers as the voice of Porky Pig and Elmer Fudd.
The wording “majority” matters: Blanc did not voice every Looney Tunes character. Other important performers included Arthur Q. Bryan as Elmer Fudd, Bea Benaderet as several characters, and Stan Freberg in selected roles. Friz Freleng, Tex Avery, and Chuck Jones were directors or animators, not the principal voice actor being asked for.