Lex Luthor is a comic book super villain in the DC Comics universe, and is mainly arch-nemesis to Superman. In the books he has been commonly conceived as either a mad scientist or a billionaire tyrant, bent on world domination. Either way, his characterization is that of a brilliant Machiavellian strategist, who always deduces the weakness of his enemies and uses it against them. He has been the leader of the Legion of Doom as well as the President of the United States under various artists' interpretations. He also appears in the Non-Disney vs. DC Villains War, as a major competitor.
Non-Disney Vs DC Villains War
Operator of Kryptonite Mines
Before the war, Lex manages to finance a Kryptonite mining operation. In the present time, he sends his two employees, Tyler and Jefferson, on an excavation mission. Unfortunately for Lex, after his employees encounter with Livewire, Jefferson seemingly "perishes", while Tyler, growing paranoid, after his interaction with the Kryptonite, joins forces with Mok Swagger.
During that time, some documents of Lex Luthor have been stolen. He becomes suspicious about his new employee, who reveals to be Zartan, an agent of Cobra Commander, and the person, who delivers him all of the stolen documents to the commander. Zartan attempts to escape, with Luthor, and his partner-in-crime in hot-pursuit, after the rascal. They eventually corner him and interrogate him for more information. After he fills up all the information, he required, Luthor sends Zartan as a new prisoner to the facility of Belle Reeve.
Saving an Associate's Life
When Derek Powers, an associate of his, becomes heavily injured and mutated, after a failed battle with the Crimson Twins, Luthor sends his associate on a chemotherapeutic station, in order to heal his wounds.