As for the biggest guns around One piece world, fans often think of the various swords that Eiichiro Oda introduced over the years, such as Yoru or Enma. Although swords are so prevalent, they are not the only powerful weapons around One piece.
There are countless weapons that aren't swords that are wielded at the highest levels, or that have simply demonstrated incredible power in the story. With their immense power, these weapons not only rival, but in some cases even overshadow the power of swords.

One Piece: Eiichiro Oda sets Zoro's Yonko Level Transformation
One Piece creator Eiichiro Oda is preparing Zoro's ultimate Yonko-level transformation.
10
Mogura
Charlotte Katakuri played a huge role in the Whole Cake Island arc. While Big Mom was the biggest threat, he was the one who directly took on Monkey D. Luffy. Katakuri's power comes not only from his Mochi Mochi no Mi, but also from his advanced Haki.
In addition, Katakuri also wields one of the best named non-sword weapons – the Moguru. Mogura is a trident and with it Katakuri was able to inflict a fatal wound on Luffy, digging into his flesh and causing immense damage.
9
Franky Shogun
The Straw Hat Pirates' most creative member, Franky, has created his fair share of powerful and versatile weapons over the years. By studying in Vegapunk's lab during the timeskip, he was able to build his ultimate weapon, known as the Franky Shogun. Franky Shogun sees him jump into a giant suit of armor made of Wapometal that, simply put, allows him to become a giant robotic weapon like a pacifist.
Franky Shogun grants him increased strength and power along with other abilities, including the destructive General Cannon, which he uses to expel a burst of compressed air. With this, Franky Shogun was able to take down one of Tobiroppo's strongest, Sasaki, during Onigashima.
8
Takeru
Yamato is Yonko Kaido's child. During Onigashima, they acted as massive allies to Luffy and the Straw Pirates. While Yamato greatly admires Oden, they still fight in their own way. Instead of a sword, Yamato has a club hammer known as Takeru, similar to their father.
Coupled with their Mythical Zoan Devil Fruit with the power of Okuchi no Makami and three types of Haki, Yamato and Takeru can dish out massive amounts of damage with abilities like Raimei Hakke or Shinsoku Hakujaku.
7
Hassaikai
Known as the strongest creature in the world, Kaido was a force to be reckoned with. Unlike most One piece of the highest levels, Kaido does not wield a sword, but instead wields a club known as the Hassaikai. Throughout the Wano arc, Kaido showed off how powerful his Hassaikai was.
By combining with his Haki, Kaido was able to one-shot Gear 4 Luffy, leaving him in a pool of blood. Hassaikai has tremendous durability and can absorb massive amounts of Haki. It turns out to be a devastating weapon that can destroy most enemies in Kaido fashion.
6
Murakumogiri
Whitebeard, also known as Edward Newgate, was once known as One Piece's the strongest man. To reach this level of power, he used Gura Gura no Mi and overpowered Haki.
Whitebeard also had one of the strongest blades in the entire series, the Murakumogiri. This weapon, although not a sword, still belongs to the 12 highest rank blades, which is the category of blades controlled by the highest rank One piece world. Specifically, this weapon falls under the Naginata category and its power is comparable to the strongest blades. One piece world.

One Piece: The 32 Strongest Swordsmen, Ranked
Considering its tumultuous setting, it's not surprising that talented swordsmen populate One Piece. Here are the strongest of the range.
5
Ragnir
In the Final Saga, during the Elbaf Arc, we finally met the long-awaited Prince Loki. While powerful in his own right with his Mythical Zoan Nidhoggr Devil Fruit, he also has one of the most powerful non-sword weapons.
Loki wields Ragnir, the hammer that devoured the mythical Zoan Risa Risa no Mi, Model: Ratatoskr, granting him a will of his own as well as icy powers. Ragnir himself could be described as a Yonko level threat as he allowed Loki to escape and protected the Nidhoggr fruit for centuries until 14 years ago.
New questions added!
GameRant Quiz
Start
Easy (15s) Medium (10s) Hard (5s) Permadeath (5s)
4
Imu's weapon
Nero's Saint Imu is built as the ultimate antagonist One piece series. So it's not surprising to see him wielding a powerful weapon. Technically speaking, Imu has many weapons that she can create out of thin air through her Devil Fruit abilities. His most eye-catching weapon to date remains unnamed, but like Whitebeard's, it's a naginata.
With this weapon, Imu can send almost anyone flying with a single swing. He was seen using it briefly during the Elbaf Arc to destroy giants. Being wielded by Imu makes this weapon incredibly powerful.
3
Poseidon
Poseidon was one of three ancient weapons that were eventually revealed during One Piece's Fishman Island Arch. Instead of an inanimate weapon, Poseidon is actually a mermaid princess. Every few centuries, Poseidon reincarnates, and currently the person who holds this power is Shirahoshi. The powers of Poseidon are tremendous and it can destroy the whole world One piece.
Poseidon has the ability to control all sea kings. with One piece a world that is mostly seas and oceans, this power can sink the entire world, destroy lands, and ruin everything, making it one of the greatest weapons to come into effect in the Final Saga.
2
Uranium
In the Final Saga of One pieceTwo of the three Ancient Weapons have already been revealed, but Uranus remains the most mysterious of the bunch. While Poseidon is Shirahoshi and Pluton is a massive warship, the identity of Uranus is still unclear. However, Oda was already able to secretly reveal Uranus in One Piece through Saint Imu Nero.
To destroy Lulusia Island, Imu launches a massive levitating ship that was hidden in the clouds. Powered by the Mother Flame, this ship was able to unleash a laser attack that destroyed the entire island in one fell swoop. It is definitely one of the most powerful weapons that has the potential to destroy the world and raise sea levels by 1 meter in 1 week.
1
Pluto
Pluton is another of the three ancient weapons One piece world. Like the others, it was designed during the Void Century and was described as a weapon of mass destruction throughout the story. Pluto has already been somewhat exposed One piece. It is a massive warship that was once created on Water 7 and currently sleeps beneath Wano Country. His plans were protected in Water 7 boatmen. During the events of Enies Lobby, the plans were burned. Yet Franky, one of the Straw Hat Pirates, keeps the information needed to build it. The ship could be rebuilt during the Final Saga.
A single shot from Pluton is said to be powerful enough to vaporize an entire island, and with that much power it can easily destroy the entire world. For now, the ancient weapons are sleeping, but they will awaken soon.
One Piece is available to read on Manga Plus.