No (or 'absent') parents
Pinocchio: Pinocchio - no mother. The Blue Fairy acts as a mother to Pinocchio.
Peter Pan: The Lost Boys - no mother.
The Sword in the Stone: Wart has no parents.
The Rescuers: Penny - no mother, but gets adopted parents by the end.
Tron: Legacy: Sam Flynn - no mother. No father for the majority of his life as well.