During the crossover DC vs. Marvel, the realities of DC Comics and Marvel Comics temporarily merged, resulting in the Amalgam Comics universe. In this reality, Lex Luthor's person and history merged with that of the Red Skull, creating the Green Skull. A war profiteer during World War II, this Lex Luthor later injects himself with a chemical agent derived from a radioactive green meteorite, extending his lifespan while giving him green skin and his head a skull-like appearance. In multiple Amalgam Comics stories, he opposes Super-Soldier (a combination of Superman and Captain America).