The Joker adopted the disguise of a dryad in "The Caped Crusader Caper", an episode of The New Scooby-Doo Movies. He used the disguise to scare Shaggy Rogers and Scooby-Doo while the Penguin, disguised as a troll, tampered with the bridge to keep them away from the cave that was the villains' hideout.
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