One Piece: Mega Mecha Soldier of Karakuri Castle

Name: One Piece: Mega Mecha Soldier of Karakuri Castle
Released: 2025-05-11
Cast: Akemi Okamura, Hiroaki Hirata, Kappei Yamaguchi, Kazue Ikura, Kazuya Nakai

2006 Adventure

Luffy and his crew found a treasure chest in the ocean, only to be disappointed to find an old lady in it. The old lady, Roba, guides the crew to the Mecha island where they meet the leader of the island, Ratchet.