Simon Greyshade's THX droid THX servant droids functioned as butlers and servants, and were droids built in the likeness of 3PO-series protocol droids. A senator named Simon Greyshade possessed one of these droids. This particular unit was altered by Venco Autem with the intention of assassinating Greyshade, but Obi-Wan Kenobi and Anakin Skywalker intervened and deactivated it.