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Vivi, voiced by Nefertari Vivi, is a princess from the Alabasta Kingdom in the anime and manga series "One Piece." She joins the Straw Hat Pirates as a temporary member during the Alabasta Saga, where she plays a crucial role in the fight against the villainous Crocodile and the Baroque Works organization. Vivi's loyalty, determination, and diplomatic skills make her a valuable ally to the crew.