torture porn villainess

A sexy female villain who is poorly written because the creator is focused on the awful thing(s) he wants to have happen to her in the end to satisfy or shock the audience.

Person A: Now that you've read my story, I want your completely honest opinion on the young female villain.

Person B: Honestly, you had a really interesting concept for a character there, but you ruined it- because almost all of your writing decisions around her revolved around drumming up excitement and demand for the bad things you did to her in the end, and your story and the fandom treated her as if her body, her screams, her pain, and her death were all she had to offer the story, she's nothing more than a torture porn villainess, and that doesn't really do you justice as a writer.