Well while your writing is FANTASSSTICCC, i’m not sure you understood, hun. Our characters here do not live in quite the same universe as the movies. They’re modernized, to a point. So Elsa, for example, isn’t a Queen of a Norwegian town, she’s just a young adult with a mysterious power, a “Mutant.”
If you’d like to rewrite an app with that info, go ahead! Also note that 3rd person is what we prefer for apps, so you’ve got that on the nose!