Talking to Himself: Frank Welker voicing Eddie Jones and Casmer Codwaller in “Chickenstein Lives!” and in “The Computer Walks Among Us,” he voices Dinkley 2000, Bruce Wormsley and Mr. Dinkley.
Don Messick voicing not only Scooby, and recurring characters Jenkins (Daphne’s butler) and the newscasters but Daddy Doo in “Curse of the Collar” and “The Were-Doo of Doo Manor” as well as Horton-Doo in the latter episode.
Casey Kasem not only voiced Shaggy but his father, Mr. Rogers as well.
Charlie Adler voicing Wender McWender & a nameless little boy in “The Schnook Who Took My Comic Book” as well as Gus and Crusty Baker in “Horror of the Haunted Hairpiece,” Mr. O’Greasy and Grady Laurence in “Lights . . . Camera . . . Monster.”
James Avery voiced Count Shockula and Skippy Johnson from “Night of the Living Burger.”
Scott Menville voicing neighborhood bully Red Herring as well as his aunt, Hedda.
BJ Ward as Mrs. Rogers, Sugie and the babysitter from “The Babysitter from Beyond” along with Bona Lickton, Bernice Binder and Mrs. Shusham in “The Ghost of Mrs. Shusham” and Mrs. Dinkley and Mrs. Stickler in “The Computer Walks Among Us.”
Michael Bell as Mr. Ryan and Jay Littlefield in “The Story Stick,” Mr. Peterson and Mr. Forester in “Snow Place Like Home.”
Jim Cummings as Ghost of the Hooded Heifer/Hooded Heifer, Coolsville Comet and Herbert Blaum in “Wrestling Maniacs.”