Lex Luthor, intending to create his personal army of Supermen, attempted to splice Superman's DNA with human DNA and injected it into a teenage test subject. Instead, he transforms into a hulking white-skinned monster with cryonic vision, incendiary breath, and immunity to Kryptonite — deducing his weakness, Luthor hits him with concentrated solar radiation that oversaturates his cells and kills him. Luthor then takes samples of the creature to continue his experiment, deciding to clone a purely Kryptonian body. Five years later, a capsule labeled B-0 is shown. After the Crime Syndicate takes over the world, Luthor releases Subject B-0, though his transformation is only halfway through. When he kills a security guard named Otis on Luthor's orders, Luthor is pleased and decides to use the imperfect clone in his plan to take the Syndicate down. Later, when Luthor and his team of villains pass through a tunnel, B-0 is revealed to be afraid of darkness. Luthor tries to comfort him with a story about his own fears, but ultimately wonders whether the clone was a waste of time; B-0 then speaks his first words, "Bizarro... try", much to Luthor's surprise. Though initially doubtful, Luthor grows truly fond of "Bizarro", who proves to be a powerful asset throughout the event.