The Empress Siren is a cunning and treacherous foe. She is willing to backstab her allies for power, and is very proud of her appearance. She sees most land-dwellers as beneath her, and thinks nothing of blowing up entire islands in the name of vengeance.

The arena grows so huge you cannot see it entirely, and the Empress Siren herself grows even bigger than the stage.
During this phase, she has 24 weak points and attacks by throwing lightning balls.