Frank Welker Fred, Scooby Voice Mindy Cohn Velma Voice Grey DeLisle Daphne Voice Matthew Lillard Shaggy Voice Tony Cervone Gary Guest Voice, Producer Gary Cole Mayor Fred Jones Sr. Guest Voice Vivica A. Fox Angel Dynamite Guest Voice Jennifer Hale Delilah Blake, Mom Guest Voice Maurice LaMarche Vincent Van Ghoul, Dad Guest Voice James Arnold Taylor Randy, Announcer Guest Voice Hynden Walch Alice May Guest Voice Patrick Warburton Sheriff Bronson Stone Guest Voice Mitch Watson Ethan Guest Voice, Writer Sam Register Executive Producer Spike Brandt Producer Victor Cook Director