Scooby-Doo and Scrappy-Doo Season 2 Episode 17 Swamp Witch ( Air Date 1980-12-13 ) Genre Animation, Mystery, Comedy, Family, Kids category. Overview "Scooby, Shaggy and Scrappy are a Swamp Witch's dinner guests....and they're the dinner! One of the few episodes where the Mystery Machine doesn't make an appearance.".