The clandestine group known as the Umbaran's Court operated within the structure of the Galactic Empire, under the direction of Sub-Administrator Sly Moore. This organization's membership consisted of entities such as a masked humanoid, a Twi'lek, and also a Trandoshan. Their scheme to assassinate the Sith Lord Darth Vader ultimately failed in the year 3 ABY, when they plotted to do so.