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* History is incomplete.
The Atlanteans were the disguises of Vittorio Presti and four graduate students.
They are green-skinned humanoids wearing tiki masks with blue eyes, panties, and fins.
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Scooby-Doo, Where Are You? (DC Comics)
They wanted to develop a theme park named Amesomelantis so they dressed up as the Atlanteans to scare everyone away.