Mirror Queen

The Mirror Queen was the "wicked witch" of The Brothers Grimm and the film's primary antagonist. She was likely a retelling of one of the Grimm fairy tale characters (notably the Wicked Queen) - this was more than intentional however as the concept of the movie was that fairy tales were based on reality.

She was portrayed by Monica Bellucci and voiced by Carole Jeghers in Disney's House of Mouse.