<Tr> <Th> Apprentices </Th> <Td> <Ul> <Li> Anakin Skywalker </Li> <Li> Luke Skywalker </Li> </Ul> </Td> </Tr> <Ul> <Li> Anakin Skywalker </Li> <Li> Luke Skywalker </Li> </Ul> <P> Obi - Wan "Ben" Kenobi is a fictional character in the Star Wars franchise . Within the original trilogy he is portrayed by Alec Guinness, while in the prequel trilogy a younger version of the character is portrayed by Ewan McGregor . In the original trilogy, he is a mentor to Luke Skywalker, to whom he introduces the ways of the Jedi . In the prequel trilogy, he is a master and friend to Anakin Skywalker . He is frequently featured as a main character in various other Star Wars media . </P> <P> Guinness's portrayal of Obi - Wan in the original Star Wars (1977) remains the only time an actor has received an Academy Award nomination (Best Supporting Actor) for acting in a Star Wars film . </P>

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