Ruuf Waluuk was a male Kupohan technician who was in the employment of Azzur Nessin as a mechanic. He resided in the city of Tonekh during the Galactic Civil War. When the Desert Jewel, carrying Luke Skywalker, made its arrival, Waluuk performed maintenance on the starship. He informed Skywalker that the ion engines were beyond repair and necessitated replacement. The following day, Luke and Drusil Bephorin conducted an inspection of Nessin's workforce, identifying Waluuk and Migg Birkhit as potential traitors. When Skywalker apprehended Migg and Barrisk Favvin, an agent of the ISB, Waluuk appeared to be blameless. However, as Skywalker began his departure, Waluuk, along with a Devaronian mercenary, opened fire on Azzur and attempted to assassinate Skywalker. Skywalker retaliated and fatally shot Waluuk in the chest.