Alan Reed
The Simpsons, of course, is one of the most well-known animated shows in history. However, The Flintstones set a precedent for The Simpsons’ success by holding the title of the most successful network animated franchise for 30 years before it was supplanted by the new animated family. Fred Flintstone was voiced by Alan Reed.
The strange thing about Alan Reed is that he utilized various personas for each character he played. In movies like The Tarnished Angels and Breakfast at Tiffany’s, he used the name Teddy Bergman instead of Alan Reed for his more serious parts.