Via Starwars.com:

Most Star Wars characters are played by just one actor, but a few of Star Wars’ most iconic personalities have been brought to life through the collaboration of a surprising number of on-set actors, voice talent, stunt doubles and choreographers. Some of these duplicitous characters are obvious, particularly when younger versions of older characters are needed, as in the case of Anakin Skywalker, Obi-Wan Kenobi and Boba Fett. Even so, it might surprise you just how many people were needed to fill any given role. Some examples are even a little strange, particularly when character’s faces or voices change on-screen during a single movie! Following, we examine some of the best examples of live-action Star Wars characters (omitting CG and practical puppets), played by multiple actors.

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