Darth Tenebrous, also known as Rugess Nome, was a male Bith Dark Lord of the Sith of the lineage of Darth Bane. 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, and the master of Darth Plagueis and Darth Venamis.