The term 'Vader of 'Star Wars'' refers to the character Darth Vader, a Sith Lord and one of the main antagonists in the Star Wars franchise. He is a powerful Force-user who was once a heroic Jedi Knight before being seduced by the dark side of the Force. Darth Vader is a central figure in the original trilogy and is featured prominently in the prequel trilogy. He is also the father of Luke Skywalker and Princess Leia Organa.