The world ofOne Pieceis filled with some of the most incredible fighters vying for supremacy across the oceans. Being a battle Shonen manga, it is no surprise that fighting is central to the story and, as with all the stories that fall under this category,One Piecehas quite a lot of power-ups for its beloved characters.

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Fans have seen some of the most unique abilities and transformations over the years and, while all of them are incredibly cool, they certainly do vary when it comes to the level of power boost that they offer.

8Gear 4

Gear 4 is one of the most incredible abilities that Luffy has devised over the years. It really shows fans how much of a genius Luffy is when it comes to fighting. Luffy developed Gear 4 during his training on Ruskaina. After learningthe ability to use Haki properly, Luffy managed to inflate his muscles and coated his entire torso body with Haki to increase tension.

This took the power of the rubber body that he possessed to the maximum and allowed him to use the power of elasticity. Gear 4 has different p, depending on the situation that he is faced with. This power debuted against Doflamingo and proved to be strong enough to completely overwhelm him in combat. It has only grown stronger with time.

Luffy’s Gear 4 Transformation in One Piece

7Ifrit Jambe

Ifrit Jambe is one of the greatest power-upsseen inOne Pieceand it belongs to none other than Sanji. After unlocking his latent Germa powers, Sanji gained a massive power boost. He received a strong exoskeleton, and, at the same time, also a tremendous boost when it comes to his physical attributes, such as strength, speed, and even an increased muscle mass.

All this, when combined with his extremely refined Haki, made Sanji strong enough to support even hotter flames on his body. Ifrit Jambe sees him make use of blue flames in combat. At the same time, Sanji can also generate lightning when using this technique, which means that his opponents get both burned and electrocuted at the same time.

Sanji Ifrit jambe attack

6King Of Hell Three Sword Style

King of Hell Three Sword Style was developed by Zoroin the Wano arc during his fight against King. This ability sees him make full use of Enma and channel his Conqueror’s Haki to the fullest. With the help of Enma, Zoro can bring out all of his latent Haki without stabilizing it.

When his swords get coated in Haki, he names his sword style as King Of Hell Three Sword style. This sword style sees his power grow exponentially and makes him strong enough to fight and overwhelm even someone as strong as King.

Roronoa zoro one piece

5Ope Ope no Mi Awakening

The Ope Ope no Mi is one of the strongest Paramecia type of Devil Fruits seen inOne Piece.This fruit is known to be the ultimate Devil Fruit, which just goes to show how incredible it truly is. At some point, Law managed to awaken this fruit and when he did that, he gained a massive power boost.

Law was able to use abilities such as KROOM and RE-ROOM in combat. Primarily, Law relies on KROOM and this allows him to coat objects with his spatial manipulation powers. These objects can then bypass all forms of defenses and deal internal damage with powerful shock waves great enough to cause craters. Law used this power against Big Mom and dealt tremendous damage to her.

Eustass Kid and Trafalgar Law

4Big Mom’s Soul Technique

Big Mom is one of the former Four Emperors of the Sea and, for a pirate like her, it isn’t a surprise to have some tricks up her sleeve. When she fought against Law and Kid, Big Mom consumed a part of her own soul to gain a power boost.

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This is possible thanks to her Soru Soru no Mi ability. This power of this fruit is incredibly underrated, given that it allowed her to overwhelm both Kid and Law at the same time, despite both of them having their abilities Awakened. While Big Mom did lose the fight, that only happened because she was nerfed and, at the same time, very careless. Her ability to increase her strength at the cost of her own soul is nothing short of incredible.

3Conqueror’s Haki Infusion

Conqueror’s Haki Infusion is, by far, one of the best power-ups that have been introduced inOne Pieceso far. Fans saw this power-up for the very first time in the Wano arc. After Luffy passed out following his fight against Kaido atop Onigashima, he figured out the key ingredient in the powerful blows of the Yonko.

He realized that Kaido had been coating his attacks with Conqueror’s Haki all the time. He then started channeling the same power and managed to match Kaido for the very first time. Only a handful of the very strongest can use this technique and, undoubtedly, it is one of the most elite powers in the world of One Piece.

Big Mom in One Piece anime

2Shuron Hakke

Shuron Hakke is another incredible power that belongs toone of the Yonko, Kaido.Kaido only powers up using this technique when he has acknowledged his opponents, as seen during his clash against Luffy. He gets incredibly drunk to enter the state and gets several mood swings at the same time.

While one would think that getting drunk makes him weaker, he actually gets much stronger. In this form, Kaido is unpredictable in combat and, what’s even more surprising is that he can switch between multiple Devil Fruit forms at an incredible speed. Kaido can even copy the abilities of his enemies. What’s more, he can tap into an even deadlier form which is much more buffer and dangerous. Above all, Shuron Hakke makes his Haki get even stronger, which makes it one of the best power-ups seen inOne Piece.

Advanced conqueror’s haki

1Gear 5

By far, the greatest power-up inOne Pieceso far is Gear 5, which is also known to be the Awakening of the legendaryHito Hito no Mi, Model: Nika.This Devil Fruit belongs to none other than Luffy and, after dying at the hands of Kaido, he ended up awakening his powers. Awakening grants him a unique transformation called the Gear 5 and, in this state, Luffy gains an even tougher body, along with a significant boost to all his physical attributes. More importantly, he is able to fight with even more freedom and can spread more laughter and joy to wherever he goes.

Furthermore, Luffy can do whatever he wants and the only thing stopping him is a lack of imagination. He gets called the Warrior of Liberation when he takes this form and it is certainly very much deserved.

Kaido smiling

Gear 5 Luffy dawn whip