Mr.Mxyzptlk
You're kidding right? A 25 foot tall ape who got killed by gunfire and fallig from the Empire states building against the not so Jolly green giant who can survive descent through the planet's atmosphere and still be battle worthy and can shrug off missles? I'd just like to point out that it was stated in the movie that he was not killed by the gunfire. He was killed by a broken heart.