The crossword solution for the term 'THAT'S ALL, FOLKS! VOICE' is 'BLANC'. Mel BLANC was an American voice actor and comedian who provided the voices for many of the characters in Warner Bros. cartoons, including Bugs Bunny, Daffy Duck, Porky Pig, Tweety Bird, Sylvester the Cat, Yosemite Sam, Foghorn Leghorn, Marvin the Martian, Pepe Le Pew, Speedy Gonzales, and many more. He was known as 'The Man of a Thousand Voices' and his catchphrase was 'THAT's all, folks!' which he famously used to end many of the Warner Bros. cartoons.