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Princess Shirahoshi

SupportingFirst appears: Episode 523 Fishman Island / Ancient Weapons

About

Princess Shirahoshi is the daughter of King Neptune and the reincarnation of the Ancient Weapon Poseidon, whose power to communicate with and control Sea Kings—the titanic sea monsters beneath all oceans—gives her the ability to reshape the world if she chose to use it as a weapon. Naive, gentle, and so easily frightened that she spent ten years sealed in a tower, she discovered genuine courage through her encounters with Luffy, who called her a crybaby so directly it paradoxically helped her grow. Her role as Poseidon and her upcoming importance in the Final Saga's Ancient Weapon storyline places her among One Piece's most consequential characters.

What Fans Say

Shirahoshi's revelation as the ancient weapon Poseidon — capable of commanding all Sea Kings — makes her one of the most consequential characters for One Piece's endgame. Fans initially found her crying excessive, but her development and her courage in Wano-adjacent events earned significant appreciation.

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Character information is collated from community sources and may contain inaccuracies. Anime content and characters are property of their respective creators.