Madam Fatal
From Jenny Everywhere Wiki
In an unidentified continuity prior to the collapse of the Multiverse, Madam Fatal was a superhero member of the League of Liberation alongside Jenny Everywhere, Glendalf, the Magician from Mars, Butterfly, Ace Harlem and Trashman. The League was part of the Sixth International and dedicated to opposing the Sixth Column, a cult which worshipped Stardust the Super-Wizard. (PROSE: The Hermetic Garbage of Jenny Everywhere)
Behind the scenes
Madam Fatal — actually a man named Richard Stanton, who used a disguise as a harmless old woman to more effectively combat his foes, was a 1940s comic character, now in the public domain, having debuted in the 1940 Crack Comics #1.