Bizarro

Bizarro makes his first appearances in the DCAU in Superman: the Animated Series, which gives his origin as the post-Crisis cloning explanation. This version is initially unaware that he is a clone, but slowly deteriorates mentally and physically. He makes his first appearance in the episode "Identity Crisis", and appears in several episodes later in the show. He later appears in a number of Justice League Unlimited episodes, appearing as a member of the Legion of Doom. This version of the character appears to have had his mind altered in order to make him comply with Luthor. He is voiced in his Superman appearances by Tim Daly, and in his Justice League Unlimited appearances by George Newbern.

Origin
Bizarro was created when Joker managed to obtain the powers of Mr Mxyzptlk. Joker used his reality-warping abilities to create Jokerworld, a Bizarro Earth upon which Bizarro, a twisted imitation of Superman, was the greatest hero. After Joker was stripped of his powers, Bizarro was allowed to remain in existence, as were a number of Joker's other creations.

Powers and Abilities
Bizarro possesses all of the powers of Superman, but several of these powers manifest as the opposite of Superman's. He is superhumanly strong and invulnerable, and capable of flight and superhuman speed, as well as possessing enhanced senses. His eyes emit freeze rays as opposed to Superman's heat vision, he is only capable of x-ray vision through lead, and he breathes flame in opposition to Superman's freeze breath, among other opposites. Under a blue sun he develops Bizarro Vision, the ability to create new Bizarro-like duplicate characters. He is vulnerable to blue kryptonite rather than green kryptonite.