Darth Tabuu was a Sith and water spirit created by dark water on the planet Subter and was used by the dark side of the Force. After being created, Darth Tabuu went on to conquer planets by flooding them. In 31 ABY, his reign of terror came to an end when he was destroyed in a battle with Darth Raiden, Arakul, Lok Agaton, Boba Fett, the reborn Grievous, and Jedi Master Lyn. His homeplanet Subter was destroyed as well.