Who is known as the Sorceress Supreme of the Dark Dimension?

Clea

Who is Taylor Swift's frequent collaborator and close friend known for producing her albums since 'Red'? Which pop group is known for the hit "Wannabe" in the '90s? What baseball player was nicknamed 'The Bambino'? In "Santa Claus: The Movie," who plays the villainous toy manufacturer B.Z.? Which classic arcade game involves shooting descending rows of aliens?