The 3 Ancient Weapons: Where Are They Located Right Now?

The entire story of One Piece revolves around the Void Century and the three weapons capable of destroying the world: Pluton, Poseidon, and Uranus. For years, they were just myths. Now, as we enter the Final War, we know exactly where two of them are—and the third has likely just been used.

Here is the status report on the ultimate power in the One Piece world.

Poseidon (The Mermaid Princess)

• Location: Fish-Man Island (Ryugu Palace).
• Identity: Princess Shirahoshi.
• Power: The ability to command the Sea Kings.
• Current Status: DANGER. Caribou (the swamp user) knows her secret and has recently joined the Blackbeard Pirates. This means Blackbeard likely knows that the weapon is a person. The Straw Hats may need to return to Fish-Man Island to protect her sooner than expected.

Pluton (The Worst Battleship)

• Location: Beneath Wano Country.
• Identity: A massive ancient warship.
• Current Status: SECURE (For now). Kozuki Sukiyaki revealed to Robin that Pluton is sleeping deep under Mt. Fuji. To unleash it, the walls of Wano must be destroyed. This is why Momonosuke decided not to open the borders yet—keeping the weapon safe from the Marines.

Uranus (The Sky God)

• Location: Mary Geoise (Likely).
• Identity: Unknown (Likely the "Mother Flame" vessel).
• Current Status: ACTIVE. We strongly believe the weapon Imu used to erase the Lulusia Kingdom was Uranus. It flies in the sky, shoots lasers, and possesses infinite destructive power. Vegapunk's "Mother Flame" is simply the fuel source that allowed the Government to reactivate this ancient terror.