Suggested by iKnowledge Mr Mxyzptlk is a tricky Superman villain who is always trying to make a mess of things. What he lacks in traditional fighting ability he makes up for with his reality altering abilities. That won’t be enough to defeat a master duelist like Kaiba though. Kaiba can harness the heart of the cards and summon forth his impressive Obelisk The Tormentor card. With that at his disposal defeat is not an option. A single hit should end the fight. Kaiba wins.