Doppelganger

Doppelganger, is the 7th episode of The Legend of Zelda Animated Series. It first aired on October 20, 1989. This is the Synopsis:

''Gannon creates a magical mirror, which takes Zelda's reflection in the moonlight and creates an evil double of her, who promptly kidnaps the princess and puts her back into the mirror. Link intervenes and the mirror is shattered, breaking the evil Zelda's escape route. She then tricks Link into taking the Triforce out of the castle and in essence, hand deliver it to Gannon himself! Will Link notice the difference?''