|This needs a stretch. (Feel free to remove when satisfied of completion.)|
* History is incomplete.
The Unbelievable Beast was the disguise of Kevin "Bumper" Carr.
The Unbelievable Beast resembled a large, pink gorilla with two antennae with two yellow stars at the top, two green scaly hands with clawed fingers, two orange webbed duck-like feet, and a red and black stripy tail.
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Scooby-Doo! (DC Comics)
Kevin dressed up as the Unbelievable Beast to vandalize the school and blame Dexter for it.