The story of One Piece is heating up daily with the Elbaf arc currently unfolding in the manga. As the enemies become stronger, the main characters must also harness new powers to overcome them. Haki has always been an effective way to counter various abilities, but Oda seems to hint at the existence of a particular type of Devil Fruit that could potentially challenge all “Haki users.” Interestingly, one of the members of the Straw Hat crew may possess this power!
The Power of Devil Fruits in One Piece
Devil Fruits are undoubtedly the most symbolic and iconic power system in the world of One Piece. For a long time, they represented the sole source of power until the introduction of Haki, which incorporated a more balanced approach.
Devil Fruits are classified into three main types: Paramecia, Logia, and Zoan. Each type can have various subclasses. Notably, Paramecia has a unique subclass known as Special Paramecia, with Katakuri being the only known user. For Zoan, there are two particular subtypes: Ancient Zoan and Mythical Zoan. As for Logia, no specific subtype has been identified yet.
Devil Fruits also conceal many mysteries. Their origins have been hinted at in the story, yet the entirety of their secrets remains unresolved. However, one thing that fans have speculated is that not all Devil Fruits are always active. No Devil Fruit existed during the Nika Era. Instead, Devil Fruits originated from the imaginations of individuals in the second world. There are still many unknowns about them, and fans eagerly await Oda to reveal what lies ahead.
The Most Distinct Type of Devil Fruit: Power Related to Souls?
As fans may have noticed, with each new arc, new characters with immense strength and ferocity tend to appear, often more formidable than those before them. The Alliance of the Straw Hats and the Blackbeard Pirates are two factions that have demonstrated incredible power during the Final Saga, both wielding a unique ability: immortality and resurrection.
Many questions arise regarding this ability, and fans have debated how they could potentially counter it. Gaban has suggested that one way to counter such powers might be through the use of Haki, but there may also be alternative methods to achieve resilience, which could involve a unique type of Devil Fruit.

Some Devil Fruits in One Piece have the ability to affect the soul of an individual. For example, Big Mom wields the Soru Soru no Mi (Soul-Soul Fruit), allowing her to manipulate souls.

Another significant example is Brook, a member of the Straw Hat Pirates. He possesses the Yomi Yomi no Mi, a fruit that also relies on the power of souls.

Although not as clearly defined, Law’s Ope Ope no Mi also holds a connection to souls, as Law can switch souls and personalities, as seen in Punk Hazard.
However, the Devil Fruits that can harm souls might be a significant asset in the Final Saga, and Oda could explore this concept more deeply. This power also explains why many believe Big Mom must return to the story, as she could play a substantial role. Elbaf will be the setting for Big Mom’s revival, particularly when she has critical connections to this land due to her past experiences.

Another character that may have powers related to souls is Saint Imu. It seems that Imu can grant strength to other characters, as well as manipulate them. Imu potentially also has the ability to control a certain character, hinting at a connection to their soul, as observed with Gunko and the fragmented personality of the character. However, much remains unclear, and fans must wait to see what Imu’s true power entails. While it’s uncertain, Imu could have a similar capability to Big Mom but possibly stronger in various aspects.
According to Gamerant