In the final battle of the War on Shu-Torun, Queen Trios led her loyalist forces in an attack on the delving citadel of Duke Rubix, leader of the ore-dukes rebelling against her. Part way through the battle, the forces of the Galactic Empire, led by the Sith Lord Darth Vader joined the fray on the side of Trios and quickly claimed victory. After Rubix surrendered, Trios executed him and named his daughter Bixene as successor to his position.