Robbie Amell as Fred Jones Kate Melton as Daphne Blake Hayley Kiyoko as Velma Dinkley Nick Palatas as Norville "Shaggy '' Rogers Frank Welker as Scooby - Doo (voice) Ted McGinley as Thornton "Thorny '' Blake V Richard Moll as Elmer Uggins Marion Ross as Hilda Trowburg Beverly Sanders as Wanda Grubwort
who played shaggy in scooby doo curse of the lake monster
Nick Palatas