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Mastermind 
Mastermind or Jason Wyngarde does not frequent the Marvel world much frequently as we would like him to, but he has been affiliated with the Brotherhood of Evil Mutants, Factor Three, rejected applicant to the Inner Circle of the Hellfire Club. Mastermind is a mutant with the power of illusion casting. He can psionically cause other people to see, hear, touch, smell, and/or taste things which to not actually exist. For example, he can seem to make a solid wall appear in an empty space.
