There’s the Marvel Comics character Medusa who has prehensile hair, she’s part of The Inhumans who’ve had multiple comic book series/runs since the 60s. There’s also the DC Comics character Godiva who has prehensile hair, she definitely doesn’t have as much material as Medusa, I don’t remember everything she’s in but I remember she was in the Justice League International series or something like that. There was yet another character who had prehensile hair named Rapunzel but I don’t remember if she was DC or Marvel and she wasn’t around too long as a character.