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".
Icemaiden
Icemaiden (Sigrid Nansen) is a fictional comic book superheroine in the DC Comics universe. She was the first heroine to use the name, and for a time was replaced by Ice. She is also one of the few bisexual superheroines in the DC Universe.