Frank Welker Fred, Scooby Voice Mindy Cohn Velma Voice Grey DeLisle Daphne Voice Matthew Lillard Shaggy Voice Lewis Black Mr. E Guest Voice Gary Cole Mayor Fred Jones Sr. Guest Voice Frances Conroy Angie Dinkley Guest Voice Vivica A. Fox Angel Dynamite Guest Voice Casey Kasem Colton Rogers Guest Voice Udo Kier Professor Pericles Guest Voice Richard McGonagle Ed Machine Guest Voice Kimberly Brooks Cassidy Williams Guest Voice Kevin Dunn Dale Dinkley Guest Voice Scott Menville Ricky Owens Guest Voice Nolan North Brad Chiles Guest Voice Sam Register Executive Producer Spike Brandt Producer Tony Cervone Producer Victor Cook Director Mitch Watson Writer