Midna

Midna is a main character in The Legend of Zelda Twilight Princess. She is known as the Twilight Princess and is supposed to rule the Twilight Realm, but gets disrupted by a false king named Zant. He takes over the Twilight Realm and turns Midna into an imp and sends her to the real world. Once she is in the real world she saves Link in the Hyrule Castle underground sewer where he is imprisoned as a wolf. Also most of the land of Hyrule gets covered in Twilight so they have to save all the Spirits of Light to restore light back to hyrule. Eventually in the end of the game Link destroys Zant and Midna returns to the Twilight Realm and breaks the Mirror of Twilight so no one can return and hurt her kingdom!