The Gang goes to the Coolsville amusement park Shaggy and Scooby are excited because they will be the first ones to ride Monster Mountain a giant roller coaster for earing the most ralfal tickets but the fun park is turning into a nightmare park because of a terrifying ghost but not just any ghost a clown ghost.
Elenco: Kellie Martin , Scott Menville , Casey Kasem , Don Messick , Linda Dangcil , Avery Schreiber , David Mendenhall , Maggie Roswell , Takayo Fischer , June Foray , Darryl Hickman , Hamilton Camp , Paul Eiding , Brian Stokes Mitchell , Dorian Harewood , Dehl Berti , Michael Bell , Vernee Watson-Johnson , Frank Welker , Jackie Joseph , Earl Boen , Chuck McCann , Isabel Sanford , Mark Taylor , Jerry Houser , Kenneth Mars , Alan Oppenheimer , Dan Gilvezan , Tress MacNeille , Arthur Burghardt , Lynne Moody , Ed Gilbert , Lewis Arquette , Kath Soucie , Al Fann , Allan Lurie , Jim Cummings .