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Mr. X is the villain in the Josie and the Pussy Cats episode "X Marks the Spot".

About Mr. X

Mr. X was Professor Isaac Belfour's assistant until the night Mr. X stole the invisibility potion and used it on himself to embark on a life of crime. He later abducted Melody Valentine, Alexander and Alexandra, and demanded that Melody give him the formula for the antidote.



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