The Sith are all darths-anakin skywalker is darth vader, palpatine is darth sidious, count dooku is darth tyrannus, and so on. They also have a master and an apprentice, one at a time. The emperor wanted Luke to defeat anakin in the duel, so he could get a new apprentice-Luke. If Luke skywalker turned to the darkside, would he have been known as Darth.... (sith name)? Also, what would you like his name to be? What about leia? Would she be a sith Lady? What would be a cool sith name for leia? Would they even be true sith? Or just dark side using force sensitives?