Maou Game

Maou Game (魔王ガメ) is a creature developed by the Golden Lion Pirates' doctor Indigo by using the SIQ for Shiki's plan to overthrown the World Government by destroying the East Blue.

It was seen in One Piece Film: Strong World, in a flooded volcano in Merveille trying to eat Nami and Billy with other animals, but it was defeated when Billy used his electric powers in the water. Another one was seen after the animals from Merveille are summoned to the main island, it was invading Shiki's palace since the Daft Green trees were blown up.