The Ghost of Bad Humor Man (Scooby-Doo): When Shaggy wrecks Freddy's mystery machine in front of an ice cream shop, the whole scene turns into a mystery of three fruity phantoms. The Lighter than Air Raid (Dynomutt): While the daring duo enjoy a leisurely game of golf, an evil genius known as "The Blimp", places his blimp lair high over Big City's head, messing with the city's supply of helium.