Co Starring Dee Bradley Baker voices Phantasm Frank Welker voices Scooby Doo Frank Welker voices Fred Jones Fred Tatasciore as Colonel Sanders Fred Tatasciore as Phantasm Kate Micucci voices Velma Dinkley Eric Bauza as Cousin Slicker Grey DeLisle Griffin voices Daphne Blake Matthew Lillard voices Shaggy Rogers Peter New as Jay Stephen Stanton voices Cosgood Creeps Kegan Firth as Ghost Kid Michael Girardin as Alan