Don Messick (7 September 1926 – 24 October 1997) was an American voice actor. He is best known as the voice of Scooby-Doo and other classic Hanna-Barbera characters.
He voiced Muttley in the original series of Wacky Races and in Dastardly & Muttley in Their Flying Machines. He also voiced Gravel Slag, Sawtooth, and Lil Gruesome. In Dastardly and Muttley he also voiced Zilly.