Overview: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.