Frank Welker Fred, Scooby Voice Mindy Cohn Velma Voice Grey DeLisle Daphne Voice Matthew Lillard Shaggy Voice Troy Baker Vronsky, Dispatcher Guest Voice Lewis Black Mr. E Guest Voice Linda Cardellini Marcy "Hot Dog Water" Fleach Guest Voice Kate Higgins Mayor Janet Nettles Guest Voice Matt Lanter Baylor Hotner Guest Voice Patrick Warburton Sheriff Bronson Stone Guest Voice Mitch Watson Ethan Guest Voice Sam Register Executive Producer Spike Brandt Producer Tony Cervone Producer Victor Cook Director Adam Beechen Writer