The late disc jockey who provided the voice of Shaggy in the cartoon "Scooby-Doo, Where Are You?" was Casey Kasem. Casey Kasem, known for his distinctive voice, portrayed Shaggy Rogers in the original series that aired from 1969 to 1970. His portrayal of Shaggy helped establish the character's iconic voice and personality, which has become synonymous with the Scooby-Doo franchise. Casey Kasem continued to voice Shaggy in various iterations of the show throughout the years.