Article summary:
This is one of the most enigmatic images in the manga. During the Reverie, we saw a silhouette (Imu) open a secret cold room inside Pangea Castle. Inside? A giant Straw Hat, preserved in the ice. Why does the World Government keep this object? In 2026, the connection with the Void Century and the Giants of Elbaf is becoming clearer.
This hat appears to be an ancient relic. It looks exactly like Luffy's, but adapted to the size of a giant. Is this proof that Joy Boy was a giant?
The national treasure that Doflamingo wanted to use.
The National Treasure of Marie-Joie
Donquixote Doflamingo knew this treasure existed. He stated that if he had possessed the Ope Ope no Mi (for immortality), he could have controlled the world with this treasure.
This hat is probably not the treasure itself, but the symbol or key to activating something—perhaps the Ancient Weapon Uranus. The fact that it is frozen indicates that it must be preserved from the passage of time, just like bodies in cryogenic preservation.
Was Joy Boy a Giant?
The most likely theory is that the first Joy Boy, Imu's enemy 800 years ago, was a giant from Elbaf (a Buccaneer?). This would explain:
- The size of the hat.
- The close connection between Nika and the Giants.
- Zunesha's crime (a giant companion).

By activating Gear 5, Luffy becomes a giant, thereby imitating the original form of this legendary warrior.
Collect the giants with our One Piece Figures.
A Tomb or a Trophy?
Imu keeps this hat in a cold room, as one would keep a body in a morgue. Is it the tomb of their former enemy (or friend?)? Some believe that Imu looks at this hat to remember their hatred of the "D"s.
To fully understand the secrets hidden by the Government, read our pillar page Treasures and Secrets.

Conclusion: History Repeats Itself
A second Joy Boy has arrived to reclaim what belongs to him. The final confrontation at Marie-Joie will free this treasure.
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