Bizarro

Background
Bizarro debuted in Superboy  #68 (Oct. 1958), writer Otto Binder casting the character as a Frankenstein's monster pastiche  that possessed all the powers of Superboy. Shunned for his grotesque appearance, the teen version of Bizarro only appeared in a single comic book story. An adult version, however, followed soon after: debuting in the Superman daily newspaper comic strip, featuring in Episode 105: "The Battle With Bizarro" (Strips 6147-6242 :Aug. 25, 1958 to Dec. 13, 1958). This storyline also introduced the strange speech patterns that became synonymous with the character, with all of Bizarro's comments meaning the opposite (eg. "bad" means "good"). The newspaper version also wore a "B" on his chest, as opposed to the distinctive "S".

Bizarro is depicted as having all the abilities of Superman, although in some incarnations several of these traits have been reversed, such as "freeze vision" instead of heat vision, and "flame breath" instead of freeze breath. This also applies to weaknesses, as Bizarro is vulnerable to blue kryptonite, as opposed to green kryptonite, which is lethal to Superman.