Either Pocahontas, Belle, Mulan, Jasmine, or Ariel. Coincidentally, they are all the biggest rebels. :D But sometimes you rebel for a good thing, whereas troublemakers don't really. This is why I'm having a hard time with this. I remember Pocahontas flipping the boat on Nakoma, and Pocahontas interacting with John Smith for the first time was sort of troublemaking, since she had been told not to and she didn't know a that point that it was a good thing to do. She was just doing it because she was curious.

But Belle visiting the West Wing was sort of troublemaking, since she had no real reason to and she had been told not to, and Ariel going to see Ursula & going to the surface was troublemaking because she had been told not to by her father and it was for purely selfish reasons, not for the good of others.

To a lesser extent Jasmine going to the marketplace and Mulan taking her father's place, because those were for decent reasons.

and belle and mulan

Mulan and Pocahontas, no change for that.