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".
Spider-Woman (Gwen Stacy)
Spider-Woman (Gwendolyn Maxine Stacy; colloquial: "Spider-Gwen", "White Widow" or "Ghost Spider") is a fictional superhero in comic books published by Marvel Comics. She was created by Jason Latour and Robbi Rodriguez. The character debuted in "Edge of Spider-Verse" #2 as part of the 2014–15 "Spider-Verse" comic book storyline, leading to the ongoing series "Spider-Gwen" that began in 2015.