- Mayumi Tanaka (Monkey D. Luffy (voice))
- Kazuya Nakai (Roronoa Zoro (voice))
- Mari Yaguchi (Yoko (voice))
- Akemi Okamura (Nami (voice))
- Kappei Yamaguchi (Usopp (voice))
- Hiroaki Hirata (Sanji (voice))
- Ikue Otani (Tony Tony Chopper (voice))
- Yuriko Yamaguchi (Nico Robin (voice))
- Kazuki Yao (Franky (voice))
- Katsuhisa Houki (Jinbe (voice))
- Cho (Brook (voice))
- Hideyuki Tanaka (Donquixote Doflamingo (voice))
One Piece — S14E531
Episode: Ryugu Palace! Taken by the Shark that They Saved!
Air Date: 2012-01-15
Runtime: 24 min
Overview
A trio of unsuspecting mermaids find themselves in hot water after releasing a bad guy from his barrel of a prison. Over at the royal palace, Luffy gets up close and personal with the Mermaid Princess!