Aldrich Killian was a pretty big villain in Iron Man 3 and his abilities were lethal. He may be one of the strongest villains in the MCU, but he won’t be able to take on Ironman. At Ironman’s best, he’s taken on far stronger opponents and Aldrich Killian wouldn’t be able to keep up with his anime armor. Ironman could fly rings around him and overwhelm him with the sheer power of the Unibeam. Ironman wins.