Mizrabel (KH:MoL)

Mizrabel is the main antagonist of Kingdom Hearts: Memories of Light. Her goal is to acquire thirteen memoirs so she can set herself free from her prison world and exact her "revenge" on everyone.

Story
When all the worlds were once one, Mizrabel was a well-known sorceress across all the lands who rivaled even Yen Sin. However after the Keyblade War, the World was shattered into countless closed worlds, with every one of them loosing the memory of that they were one. Mizrabel was initially ruling the Castle of Illusion after the War, but as the memory of her slowly disappeared her power was splintered. The loss of her power resulted in Yen Sid banishing her to Wasteland so she wouldn't try to reacquire them and wreak havoc upon all worlds.