Scooby-Doo
The first episode of "Scooby-Doo, Where Are You!" "What a Night for a Knight" debuted on the CBS network Saturday, September 13, 1969. The original voice cast featured veteran voice actor Don Messick as Scooby-Doo, radio DJ Casey Kasem (later host of radio's syndicated "American Top 40") as Shaggy, actor Frank Welker (later a veteran voice actor in his own right) as Fred, actress Nicole Jaffe as Velma, and musician Indira Stefanianna Christopherson as Daphne. Scooby's speech patterns closely resembled an earlier cartoon dog, Astro from "The Jetsons" (1962–63), also voiced by Messick. Seventeen episodes of "Scooby-Doo Where are You!" were produced in 1969–70. The series theme song was written by David Mook and Ben Raleigh, and performed by Larry Marks.
Scooby-Doo (character)
Don Messick originated the character's speech patterns and provided Scooby-Doo's voice in every "Scooby-Doo" production from 1969 until 1994's "Scooby-Doo! in Arabian Nights". Voice actor Hadley Kay voiced the character for a brief period in 1997, for two episodes of "Johnny Bravo", and a few television commercials. Scott Innes (also the then-voice of Shaggy) voiced Scooby-Doo in four late 1990s/early 2000s direct-to-video films and continued to voice the character regularly for toys and video games (such as "Scooby-Doo! Night of 100 Frights") until 2008. Neil Fanning provided the voice of the computer-generated Scooby-Doo in the 2002 live-action film and its . Frank Welker (also the voice of Fred since 1969) has voiced Scooby since 2002, taking over beginning with "What's New, Scooby-Doo?" and other spin-offs including the live-action prequels "Scooby-Doo! The Mystery Begins" and "Scooby-Doo! Curse of the Lake Monster". Dave Coulier and Seth Green have both voiced the character in "Robot Chicken".