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-Girl (Mayday Parker)
May "Mayday" Parker is a fictional superheroine appearing in American comic books published by Marvel Comics. She has been referred to as both Spider-Girl and Spider-Woman. The character appears in the MC2 universe. The character was created by Tom DeFalco and Ron Frenz as the teenage daughter of Peter Parker (Spider-Man) and Mary Jane Watson, and first appeared in "What If" (vol. 2) No. 105 (February 1998). She later acquired her own ongoing comic book, "Spider-Girl", written by DeFalco and drawn by Frenz and Pat Olliffe, which was the longest-running superhero book with a lead female character ever published by Marvel before being relaunched as "The Amazing Spider-Girl", and later "The Spectacular Spider-Girl".