Terror, thy Name is Zombo (aka Roller Ghoster Ride!)
A Pup Named Scooby-Doo - Season 2

DESCRIPTION

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.