Origin of Mister Sinister
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Why is Mister Sinister so dangerous? His mastery of genetics allows him to manipulate life itself.
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Let's Talk About The Many Clones of Mister Sinister in Immortal X-Men #8
Jean Grey Becomes the Pheonix and Defeats Mr. Sinister Morph Gets His Revenge X-Men 97 Episode 10
Powers Of X: Mr Sinister THE BETRAYAL + How It Destroyed The Future!