Emperor Rasa Formerly known as Darth Rasa was a Dathomirian/Human hybrid Nightbrother who was raised by both the Nightbrothers and the Nightsisters before becoming a Dark Lord of the Sith. He was trained in the ways of the dark side and was apprenticed to the Sith Emperor. Rasa lived for thousands of years, and trained —Darth Maul—as his apprentice.