On Earth 49, the Joker used a combination of Kryptonite and the Scarecrow's Fear Toxin to drug Superman and make him hallucinate that Lois Lane was Doomsday. Under the influence of the gas, Superman attacked Lois and killed her while she was pregnant with their first child. This caused Superman to snap, murder the Joker and institute an authoritarian regime to ensure the "safety" of the people of his world. Batman formed an Insurgency to oppose him.

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