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In Star Wars Episode VI: Return of the Jedi, Luke commands C-3PO and R2-D2 to deliver a message to Jabba the Hutt, whereby C-3PO is used as Jabba's translator while R2-D2 serves on his flying ' sail barge '.

C-3PO's first translation for the crime lord is of the bounty hunter Boushh — Leia in disguise — claiming the bounty for Chewbacca.