The Sugar Plum Fairy

The Sugar Plum Fairy is the main antagonist of the movie The Nutcracker and the Four Realms, played by Keira Knightley.

Using Mother Ginger as the pawn in her schemes, she is an evil fairy who seeks to conquer all Four Realms. She manages to make her intentions hidden until a point where Clara Stahlbaum and Phillip the Nutcracker discover it, at which point they dedicate their efforts in stopping the Sugar Plum Fairy and saving the Four Realms.

She is based on the character from the same name from the story by E.T.A. Hoffman and the ballet by Pyotr Ilyich Tchaikovsky.