If you are reffering to the swedish (at least I think there swedish)band, then I don't have an answer for you. But I believe you are talking about one Lord Darth Vader from the movie "Star Wars." In that case, Vader is a 6.7 human and/or cyborg who was once a slave on the (fictional [duh]) dessert planet tattoine. Then he became a jedi, then fell to the dark side, etc. etc... Honestly though, go watch the movie (original series first, please) :)