Urgukz Peiss was a Gran senator and clandestine Sith cultist who identified to masculine pronouns that was active during the era of the New Republic. A member of the Galactic Senate that possessed a prominent seat within the Defense Committee, Urgukz Peiss supervised certain aspects of the Republic Navy during the uncertain period of time that correlated with the quest that the outcast Ahsoka Tano undertook to find the missing Jedi Ezra Bridger, discussing the sustained presence of Imperial loyalists inside the federal government with his colleagues during a debriefing that General Hera Syndulla offered the Committee after a skirmish that broke out with a staff of an ex-industrial facility that had once belonged to the deposed Magistrate Morgan Elsbeth. Although Syndulla believed this verified her suspicions about an existent coalition between the various remnants of the Galactic Empire that could challenge the Republic if united behind the whispered return of Grand Admiral Thrawn, Senator Hamato Xiono disagreed and after a heated exchange between the two over the actual fate that had befallen the former's surrogate son, Ezra Bridger, Syndulla was excused. For Peiss, who was secretly an agent of the Children of Vader — a cult dedicated to honoring the memory of the late Sith Lord Darth Vader that possessed Imperial ties — this was a triumph that he passed along to her leader, the warlord Marialex Bricall.