Gender in speculative fiction
The first known female superhero is writer-artist Fletcher Hanks's minor character Fantomah, an ageless, ancient Egyptian woman in the modern day who could transform into a skull-faced creature with superpowers to fight evil; she debuted in 1940 in Fiction Houses "Jungle Comics".
Thunder (comics)
Thunder is a fictional superhero appearing in American comic books published by DC Comics. The character was created by writer Judd Winick and artist Tom Raney in the Modern Age of Comic Books. She is first mentioned in "Green Arrow" vol. 2 #26 (July 2003) and first appears a month later in "Outsiders" vol. 3 #1. Born Anissa Pierce the eldest daughter of superhero Black Lightning, she is a metahuman in the DC Universe. She is capable of increasing her physical density, rendering herself bulletproof, and creating massive shockwaves when stomping upon the ground.