028 Multiple Man
Jamie Madrox was born with an incredible power -- one he could have used for great good. Instead, he fell under the influence of the mutant terrorist Magneto, and became one of the foremost fighters for the Brotherhood of Mutants. His duplicates served as foot soldiers for the various plots hatched by Magneto over the years. In the end, he was the mutant who executed the most devastating parts of the Ultimatum attacks.