Justice League

Early in the series, Superman finally exposes Lex's criminal activities with the aid of Batman, Green Lantern and Martian Manhunter and achieves sufficient evidence to prove his guilt. He also learns that he is suffering from a rare but deadly blood cancer caused by long-term exposure to the Kryptonite shard he carried for years. While in prison, he bribes the Ultra-Humanite to free him, and the two band together and ultimately form the first Injustice Gang. Ultra-Humanite's technology allows Lex to wear an armored suit that will stop the spread of the cancer, as well as give him a fighting chance against Superman, blaming him for his ordeal. However, Humanite betrays him when approached with an offer by Batman. After being exposed as a criminal and losing his business empire, Lex's characterization turns more toward the original conception of a criminal genius obsessed with destroying Superman, most notably enlisting the help of the android AMAZO to destroy the League. He is eventually pardoned from his crimes after assisting the Justice League in defeating their alternate evil counterparts from a parallel universe, the Justice Lords. Afterwards, Lex is interviewed by the press and implies that he is thinking of going into politics.