Maleficent

Maleficent is a major antagonist in the Kingdom Hearts series. She is an evil fairy who made her first appearance in Disney's Sleeping Beauty. She seeks to gain control over all the worlds and spread darkness throughout them. She is introduced in Kingdom Hearts as the leader of the band of Villains from multiple worlds who seek to conquer Kingdom Hearts and thus rule all worlds. To this end, they assist the Heartless in capturing the seven Princesses of Heart and devouring the hearts of the worlds. However, Sora and his allies manage to thwart her plans by defeating her cohorts and eventually the witch herself. Other games in the Kingdom Hearts series depict her initial rise to power and her later attempts to regain it, and while other Disney antagonists rarely have any significance outside of their original worlds, Maleficent's influence almost always extends throughout the worlds.