Blue Kryptonite. This is Bizarro Kryptonite. Its infrequent history begins in Superman #140's three-part "Son of Bizarro" novel. To prevent an angry Bizarro army's invasion of Earth, Superman uses Luthor's confiscated Duplicating Ray on Green K, correctly surmising that the product will be just a dangerous to Bizarros as the real stuff is to him. The resulting Blue K stockpile scares off the Bizarros, the only casualty being the story's heavy, a Bizarro Supergirl. The only other appearance of Blue K is in Superman #423 when Bizarro No. 1 destroys his world and then uses Blue K to kill himself after wiping a city blockful of Metropolis citizens. | ||
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