Mr. X

Mr. X is Professor Isaac Belfour's former assistant. He was the villain in the Josie and the Pussycats episode "X Marks the Spot".


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 she give him the formula for the antidote.

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