<P> Jones is also known as the voice of Darth Vader in the 1977 film Star Wars: A New Hope and its sequels The Empire Strikes Back (1980) and Return of the Jedi (1983). Darth Vader was portrayed in costume by David Prowse in the film trilogy, with Jones dubbing Vader's dialogue in postproduction because Prowse's strong West Country accent was deemed unsuitable for the role by George Lucas . At his own request, Jones was uncredited for the original releases of the first two Star Wars films, though he later would be credited for the first film in its 1997 "Special Edition" re-release . As he explained in a 2008 interview: </P> <P> When Linda Blair did the girl in The Exorcist, they hired Mercedes McCambridge to do the voice of the devil coming out of her . And there was controversy as to whether Mercedes should get credit . I was one who thought no, she was just special effects . So when it came to Darth Vader, I said, no, I'm just special effects . But it became so identified that by the third one, I thought, OK I'll let them put my name on it . </P> <P> Although uncredited, Jones' voice is possibly heard as Vader at the conclusion of Star Wars: Episode III--Revenge of the Sith (2005). When specifically asked whether he had supplied the voice, possibly from a previous recording, Jones told Newsday: "You'd have to ask Lucas about that . I don't know ." Jones reprised his voice role of Vader for the character's appearances in the animated TV series Star Wars Rebels, and the live - action film Rogue One: A Star Wars Story (2016). </P> <P> His other voice roles include Mufasa in the 1994 Disney film The Lion King and its direct - to - video sequel, The Lion King II: Simba's Pride . Archive recordings from the film would later be used for the English version of the 2006 video game Kingdom Hearts II since Jones himself did not reprise the role . He more recently voiced Mufasa in the 2015 TV pilot movie The Lion Guard: Return of the Roar . In February 2017, it was announced that Jones would again voice the character in the 2019 remake of The Lion King, which will be directed by Jon Favreau . </P>

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