Rugess Nome, better known by his Sith name Darth Tenebrous, was a Force-sensitive Bith who reigned as Dark Lord of the Sith. In his public persona as Nome, he was a legendary artisanal starship designer with a reputation spanning the galaxy; as the Sith Lord Darth Tenebrous, he was a scientific mastermind possessed of a calculating intellect with an obsession on shaping the future. He was the master of Darth Plagueis.