On a parallel world known as Earth-3, there exists a version of Lois Lane known as Superwoman. Superwoman has all the powers of Wonder Woman and acts as her equivalent in the Crime Syndicate (a villainous version of the Justice League). In her casual time it's revealed that she lets Jimmy Olsen take lurid photos of her in return for favours. She is revealed at one point to be the last Amazon, as she killed all of her brethren to show off her strength.
While Wonder Woman possesses a Lasso of Truth, Superwoman possesses a Lasso of Submission, which forces any man who is bound by it to become infatuated with its user and do whatever they command.
A recurring subplot is that Superwoman is pregnant, but the father remains ambiguous. It was later revealed in the Forever Evil miniseries that Alexander Luthor is the father and that the baby might prove to be the harbinger of an upcoming apocalypse.
In Other MediaSuperwoman is one of the main antagonists in Justice League: Crisis on Two Earths. This version of Superwoman is not Wonder Woman, but Mary Marvel.
- Superwoman's alter-ego was not originally Lois Lane. That detail was changed some time after Crisis on Infinite Earths. The Lois Lane of Earth-3 was originally the wife of Alexander Luthor and the mother of Alexander Luthor jr.
- Having Alexander Luthor be Superwoman's secret lover may be a nod to this original idea.
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