Jubnuk is a minor antagonist in Return of the Jedi. He is depicted as a Gamorrean who serves the crime lord Jabba Desilijic Tiure at his palace on Tatooine.
Jubnuk fell into Pateesa's pit after Jabba dropped Luke Skywalker into the Rancor's pit, and Jubnuk fell in since he stood really close to the trapdoor Luke fell through. The Jedi Knight and the Gamorrean then slipped down the slide which led to the pit. After getting up, both saw the door open revealing Pateesa, who had previously eaten Jabba's dancer Oola. Jubnuk attempted to climb up the trapdoor's steep slide to no avail. As his fellow Gamorrean guards laughed at his luck, the rancor grabbed Jubnuk and ate him. Skywalker, on the other hand, was able to kill the beast and avoid the same fate as Jubnuk. One of Jubnuk's hands was stuck in between Pateesa's teeth when Malakili and Giran mourned the rancor's death.