One Piece: Giant Mecha Soldier of Karakuri Castle

One Piece: Giant Mecha Soldier of Karakuri Castle (2006) is a animation, adventure film directed by Konosuke Uda rated 6.9/10.

The Straw Hats visits an island, known as Mecha Island, where a fisherman sings an old folk song about a Golden Crown. Searching for that mysterious treasure, they find a hidden entrance into the island. The island's leader, Ratchet, impressed with the find and in search of the Golden Crown himself, invites the crew to join him in his search and the crew along with Ratchet and his henchmen enter the cave. As it turns out, the islands true form, is that of a giant turtle. Ratchet, who had known this all along, uses his mechanical castle to take control of the turtle, in order to use it, to take over the world. Now the Straw Hats have to stop not only Ratchet, but also the helpless turtle, from crashing into a nearby island.

Cast

Mayumi Tanaka

Monkey D. Luffy (voice)

Kazuya Nakai

Roronoa Zoro (voice)

Akemi Okamura

Nami (voice)

Kappei Yamaguchi

Usopp (voice)

Hiroaki Hirata

Sanji (voice)

Kazue Ikura

Tony Tony Chopper (voice)

Yuriko Yamaguchi

Nico Robin (voice)

Goro Inagaki

Dr. Rachet (voice)

Koji Kato

General Maji (voice)

Keiichiro Yamamoto

Colonel Honki (voice)

Hisako Kyoda

Roba (voice)

Takeshi Aono

Gonzou (voice)