In the world of One Piece, the strength of the ocean’s top figures comes not only from Devil Fruits or Haki but also from their mastery of legendary weapons. These weapons are as iconic and fearsome as their wielders, often listed among the famous swords known as Meito.
Although the “Supreme Grade Great Swords” are considered the pinnacle, there are still several weapons with terrifying destructive power whose exact rankings remain a mystery. Let’s take a look at nine ultimate weapons that have yet to be officially classified!
1. Napoleon Sword
Owner: Former Yonko Big Mom
As one of the earliest Yonko with monstrous physical strength, Big Mom fights wielding a massive great sword named Napoleon. Thanks to the power of the Soru Soru no Mi Devil Fruit, she infused a huge fragment of her soul into the sword. This turned Napoleon into a sentient Homie with devastating power.
Though Oda has never officially ranked it, fans widely agree that Napoleon easily qualifies as a supreme-grade weapon.
2. Hassaikai Iron Club
Owner: Former Yonko Kaido
Known as the “Strongest Creature in the World,” Kaido mainly crushes opponents with his supreme Haki and the giant iron club called Hassaikai. This weapon has accompanied Kaido since his apprentice days on the Rocks Pirates ship. After hundreds of brutal battles against legends, it’s no surprise that this iron club has been honed to one of the highest ranks worldwide.
3. Gryphon Sword
Owner: Yonko Red-Haired Shanks
Despite being the strongest Haki master currently, Shanks is also one of the world’s greatest swordsmen, ranked alongside Mihawk. His Gryphon sword has a storied history, accompanying him since his youth.
Notably, during the battle that sent Eustass Kid to his end, Shanks’ swift strike transformed into a massive Gryphon beast before being unleashed. This led many fans to speculate that the sword might have consumed the Mythical Zoan Devil Fruit Model: Gryphon.
4. Cerberus Sword
Owner: Saint Figarland Shamrock
A fearsome member of the Holy Knights, Shamrock wields a uniquely powerful sword named Cerberus. This sword has been infused with the Mythical Zoan Inu Inu no Mi, Model: Cerberus, allowing Shamrock to summon the legendary hellhound guardian to fight at will.
Since every member of the Figarland family possesses a similar sword, fans believe all their weapons hold Mythical Zoan powers and rank among supreme-grade weapons.
5. King Harald’s Great Sword
Owner: King Harald
King Harald is remembered as one of the strongest figures of the old era alongside Davy D. Xebec. His fighting style centers on a massive great sword. With mastery of Conqueror’s Haki at its peak, Harald is often grouped with legends like Xebec, Roger, Garp, and Whitebeard.
Since two of these legends wield supreme-grade weapons, Harald’s great sword is undoubtedly no exception.
6. Eclipse Sword
Owner: Davy D. Xebec
Davy D. Xebec is the greatest pirate lost to time, boasting top-tier power in the series. His weapon, the Eclipse sword, is one of the most brutal weapons in history. Oda revealed it can cut through an entire section of a large island without even needing Haki coating. Xebec’s status alongside Roger and Whitebeard clearly confirms this sword as a supreme-grade Great Sword.
7. Giant Great Sword on Elbaf Island
Owner: Unknown
When the Straw Hats arrived at the legendary land of giant warriors Elbaf, fans were stunned by a colossal sword embedded like a mountain in the island. Although the story has revealed the existence of giant races, this sword is beyond the reach of any current character. Its power level remains one of One Piece’s greatest mysteries.
8. Ragnir War Club
Owner: Loki
Ragnir was originally a giant war club infused with the Mythical Zoan Ratatoskr Devil Fruit, granting it life and the power to manipulate ice and lightning. This weapon has guarded the Nidhogg Devil Fruit for 800 years, as no giant warrior was strong or worthy enough to lift it, until Loki appeared. Ragnir’s reputation is so great that even the Five Elders and Imu fear it.
9. Nemesis Divine Weapon
Owner: Saint Nerona Imu
The weapon of the supreme entity Imu, Nemesis, is the biggest shock to fans. Initially appearing as a long-handled weapon, it seems to be an eternal Black Sword.
However, Nemesis’s most terrifying ability is its shape-shifting power. It can transform from a spiked club or chain to its ultimate form: a gigantic great sword called “Nemesis – Sword of Judgment.” Fans believe this weapon surpasses the usual supreme-grade rankings, reaching a divine level.