Fantasy movies where...
... most adults are exageratedly mean (even if they're not aware) to the point of being cartoons, while the protagonist (even if they're an adult too) is the complete oposite? These are the ones I can think of at the moment:
-MATILDA.
-CHARLIE AND THE CHOCOLATE FACTORY (I don't remember if the same thing happened in the original).
-CORPSE BRIDE.