Movies are often cited as great resources for fiction writers. Kids movies deal with strong emotions and universal themes. Fairy tales have survived because they are so relatable. Better still for the writer, they are a story stripped to it's essentials.
Maisey Yates has a new post about Disney's Beauty and the Beast. She talks about the Beast as a vulnerable alpha hero. I always thought that B&B was remarkable for the character of Belle. She's lovely and likable, but she is not perfect. She is has emotions and she isn't always kind and forgiving. Although at the beginning of the movie Belle isn't fooled by Gaston's pretty face, she does learn over the arc of the story to see past the Beast's appearance to see the man underneath. A man who becomes a better man for her.
Ariel and Aurora are flawless ideals. Belle is a person and she opened the door for other Disney heroines that break the princess model like Mulan and Giselle. Mulan pretends to be a boy. If you haven't seen Enchanted, I'll clue you in: Giselle isn't very bright. These are the characters that my kids loved the best. In truth, we don't love a character in spite of their flaws; we love them because of their shortcomings.