Aldrich Killian is the principal villain in Iron Man 3. He was the creator and CEO of the A.I.M. group. Do you remember how he gained his superpowers?

Answer He got infected by a virus

Because Killian got infected by a virus called Extremis he gained superhero abilities. He was able to regrow whole sections of the body, gain stamina, heal himself, and melt even Iron Man's Armor with just a touch.

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