Darth Gravid

"The last Sith possesed of the knowledge had been inexplicably drawn the light side, and killed."

- Darth Plagueis

This individual reigned as Dark Lord of the Sith at somepoint after Darth Cognus. He or she was the last Sith of Darth Bane's order to possess the knowledge of Transfer essence, but was inexplicably drawn the light side of the Force and sabotaged the teachings to ensure that no Sith attained immortality. They were ultimately killed, presumably by their own apprentice, and the techniques they had sought to conceal from the dark side's practitioners would remain lost for centuries.

Appearances

 * Star Wars: Darth Plagueis