
Role of Zunesha in the Void Century
In One Piece Zunesha maintains a direct relationship with Joy Boy which remains largely undisclosed to readers. Zunesha tells the viewers in the Wano Arc that it shared a battle experience with Joy Boy during the Void Century that began more than 800 years ago. Zunesha participated in the major war that occurred between the Ancient Kingdom and the World Government’s past ruler.

What was Zunesha’s crime?
Zunesha was condemned to exist across the seas forever after he committed an unclear transgression. The defeat of Joy Boy alongside the fall of the Ancient Kingdom could explain why Zunesha received its eternal oceanic punishment. The entity responsible for sentencing Zunesha remains unknown since it could either be the World Government or an upper authority.

Zunesha waits for instructions before taking any action because Momonosuke ordered it to assault Jack’s fleet. The beast seemed made after the time of Joy Boy as either his weapon or companion yet it remained in waiting. The transformation of Luffy into Gear 5 form registered by Zunesha caused the ancient beast to detect the ‘Drums of Liberation’ which had not sounded in 800 years. Zunesha shows strong signs that he belonged to the Joy Boy movement during its previous era thus making Luffy his successor.
Does Oda reveal Zunesha’s betrayal in One Piece 1138 Chapter?
The mural painting drawing on the Elbaph shown in One Piece, 1138 chapter hints at the crime of Zunesha. In the mural, there is shown a group of 20 people stealing a sort of ancient power from the Ancient Kingdom and carrying it through an elephant-based creature which is most likely Zunesha. A creature with crown was seem to be standing on the top of the elephant.

This gives an understanding of how Zunesha betrayed Joyboy and joined hands with Imu in stealing the ancient weapon from the ancient kingdom. The 20 people who were shown to be stealing the power maybe a reference of the 20 ancient kings from the Void century.
Zunesha stands as a possible ally of Joy Boy whose existence links him to the advanced technology and hidden wisdom of the Ancient Kingdom. The concluding saga of One Piece will probably reveal the complete backstory of Zunesha alongside its relations to genuine world historiography.