The Sith Brotherhood was an organization with the goal of causing the complete and total destruction of the Jedi. Formed by Darth Invisus, it struck an alliance with the Shadow Imperium and, later, the Cylon Imperium in order to build up a force so strong as to be able to attack the Jedi Order and defeat it in one swift blow. Invisus, along with the aid of Keldon Tyfus and K471, built up the Imperiums' forces to become a formidable threat, and was poised to initiate his plans, with covert operations already commenced galaxy-wide, when his power was usurped by Darth Trayus.