The Little Mermaid Became A Superhero
Disney's The Little Mermaid features the titular character as a goofy mer-teen who falls for a human prince and sells her voice to a sea witch for a shot at bangin' something with legs for a change. Fortunately, the prince later solves all her problems by stabbing said sea witch with a ship, and everyone lives happily ever after. Except the sea witch. But fuck sea witches, anyway.
Walt Disney Studios
"Listen to this song, in which I clearly and unambiguously lay out the terms of the contract that you'll later murder me for."
But In The Original:
The original version, by fairy tale legend and noted masturbation enthusiast Hans Christian Andersen, features no villains at all, and comes with a much better character arc for the mermaid than "dumb teen to damsel in distress." In the Andersen version, the mermaid rescues the prince and falls for him, like in the movie, but that's just one of her motivations. As a water creature, she can't really interact with the human world, which she's intensely fascinated by. She also doesn't have a soul, and therefore doesn't get an afterlife when she dies, which seems sorta harsh. So she sets about to change all that.
Her grandmother tells her this can all be achieved by making a human man love her more than anything, so she sets out to do just that, going to see the sea witch of her own free will (instead of being tricked by a pair of eels like in the movie). The witch in this version isn't evil. She's very matter-of-fact about the commercial interaction they're about to undertake and its side effects, which are naturally a lot worse than in the movie: The mermaid will not only lose her voice and tongue to the witch, but she can never return to the sea. Every step with her new legs will hurt like walking on blades (though she'll weirdly also gain the ability to dance like no one's watching). Oh, and if the prince decides to marry someone other than her, she'll die.
Walt Disney Studios
"Did you have to call it a 'sudden death' clause?"
The mermaid looks at these obstacles and doesn't give a single damn. She drinks the potion, enters the world of humans, and ... everything goes to shit, because otherwise we wouldn't have a compelling story. The prince falls for her for a while, but he wanders off to marry a random princess, having ironically mistaken her for the woman who rescued him from the sea.
Right as it seems that the game is over, the mermaid's sisters enter the fray. They too have visited the sea witch, and negotiated a deal in which they sold their hair for a magic knife that can return the mermaid back to, uh, a mermaid. All she has to do is kill the prince who broke her heart, and she can go back to living her life.
So be thankful all your ex does is make passive-aggressive Facebook posts.