Noop Yeldarb was an elderly Human man from Roon who maintained the lightstation in the Cloak of the Sith. Although most of the lightstations scattered throughout the nebula were autonomous, it was Yeldarb's duty—along with the Roon Trade Guild—to ensure that pirates would not interfere with the lightstations' positions and draw unsuspecting travelers into a trap. The responsibility had been forced upon him by the nefarious Governor Koong, who had enslaved many natives of Roon. Following Koong's death, Yeldarb returned to the Umboo Lightstation and resumed his duties.