Rise of the Guardians (2012)

The mysterious man in the moon chooses carefree and charming Jack Frost to be the next guardian. But he is reluctant until he is promised his memories back of a childhood he has long forgotten. A childhood as a human. Rising against him and the other guardians is Pitch Black, the bogey man who has long been forgotten. Now with his power of fear he will undo all the guardians stand for, above all the ability to believe in them