Obi-Wan Kenobi is a fictional character in the Star Wars universe. He is one of the protagonists in the Star Wars series; along with Anakin Skywalker, R2-D2, an C-3PO, he is one of the few major characters to appear (in some form or another) in each of the six Star Wars films. He is portrayed in the original trilogy by Sir Alec Guinness and in the prequel trilogy by Ewan McGregor.