Nug was an individual working as a mechanic for the Sith Empire's Project Threshold on Nar Shaddaa during the Cold War. Together with Uli Zhensi, Bola and Uthril, Nug became disgusted with the Empire's torture techniques and tried to sabotage the project. However, their plan was discovered and only Uli managed to escape. He later recruited a Galactic Republic citizen to finish their work and destroy the project, the task that helped Nug and the others escape in the confusion.