Frank Welker

From Scoobypedia

Frank Welker born 1946 is one of the most prolific voice actors of the 20th and 21st century. He is known from doing the voice of Fred Jones on Scooby Doo since 1969. Since 2002 he has also been the voice of Scooby Doo. He is also known as the voice of Dynommut Dog Wonder and various animal characters throughout his career.