Devil Fruits are one of the trademarks of the One Piece series and one of the main sources of its powers, silliness, and creativity! Their backstory has been largely unexplained for now, but we have known and seen a LOT about them in the series.
Devil Fruits were initially somewhat rare, but as the series went into the Grand Line, the stronger seas, they became much common. This happens to the point some crews are filled with Devil Fruit users of all kinds.
Even certain places within the Grand Line, especially recluse countries, have some twists when it comes to Devil Fruits. People in Wano may refer to them as Jutsu, while people from Amazon Lily think they are curses; it just goes from culture to culture.
Devil Fruit powers are PERMANENT. If one eats one in a lifetime, they can't consume another nor change their power. This is because the person's very DNA is affected once they eat one. Despite that, their genetics aren't passed along through children and such.
Weaknesses & Effects
Even before we enter the categories of Devil Fruits, we already know that they all share weaknesses.
The major one is Water. When in direct contact with devil fruit users, sometimes with their powers, Water is surely to weaken them to the point they can't actively use their ability. Some powers, as mentioned, may be affected as well. Users also lose the ability to swim through any kind of water, prompting them to sink and drown.
This is the case with any kind of water, as long as its quantities are notable: a User won't feel weakened by raindrops, but, they will weaken if the water somehow piles up over the ground and reaches to around their ankles.
Devil Fruit powers are not NULLIFIED by seawater (even if some of them, like the Suna Suna no Mi (Sand-Sand), are very affected by it) when it touches the user. Indeed, some powers may end up even more susceptible to water than others.
There exists Seastone, a material/mineral that harbors the same energy of the sea, just in a solid form. When it comes in contact with users and certain powers, they have the same effects as mentioned above.
Some powers may take more time to be figured out than others, this leads to impatient people finding certain abilities to be "useless". While it is true that a few Devil Fruits don't have applications out of certain fields, the user is limited only by their imagination and the scope of the power in itself.
What does imagination and scope of the power mean?
- Scope of power is basically the base of the power, in example: the Ito Ito no Mi's power scope is producing strings, nothing more than that.
- Imagination is something clear, it is however the user can think and apply their devil fruit's power. This is what allows someone like the user of the Ito Ito no Mi to rettain the simplicity of just producing strings, but still being extremely versatile.
In other words, branching out the capabilities of your Devil Fruit is more than fine, as long as you don't breach out of its scope.
- Do note, however, that sometimes certain effects may be indirectly achieved through certain abilities. A canon example is Big Mom with the Soru Soru no Mi, which allows her control over souls, that is her main power, yet, through it, she is capable of LIMITEDLY manipulating lightning and fire due to filling certain nature elements with pieces of her soul.
One is NOT supposed to simply wield two Devil Fruit powers. Canon's only exception is Blackbeard, a situation that has largely been unexplained. For that very reason, it is advised to stray from these ideas.
Devil Fruits only possess THREE classifications, though there are sub-classifications.
These are: Paramecia, Zoan, and Logia, all of which are identified through major traits. We will talk more about these traits soon.
Paramecia are the most common amongst Devil Fruits and seem to hold the most varied of powers, making them by technicallity the ones with the most subclassifications, even if unofficial.
Their abilities range as following:
- Abilities related to certain traits: Levitation, Elasticity, Smoothness.
- Abilities of an object: Flags, Scizors, Books.
- Abilities related to specific actions: Cutting, Pushing, Reflecting.
- Production of certain objects: Blades, Barriers, Weapons.
- Production of certain substances: Cream, Poison, Mucus. (These are sometimes mistaken as Logia)
- Having control over certain specific concepts: Hormones, Mirrors, Shockwaves
In summary, like it was mentioned above, their ranges vary the most. Evidence of that is how the small list above doesn't really convey all of them.
A gimmick to categorizing something as a Paramecia is that they won't have major traits of the other two classifications: the animal forms of Zoan and the intangibility of Logia.
Some say Zoan are the most boring of Devil Fruits and the most simple, two statements that can be easily twisted around when one observes how they work. Zoan are the power of animals via transformations.
They grant the user two new forms, a full animal one and one sitting between their original race and the animal's, a hybrid. However, it doesn't stop there, whatever physiological abilities this animal may have will be added to the user's:
- A Snake Zoan is likely to have, depending on the snake species, most of the following abilities: Retractable fangs, Venom expelling, Enhanced senses (such as touch and smell), Night vision due to infrared detection.
The key is how the user manages their body and added abilities. However, fact is that most Zoan are limited to physical and direct combat.
Zoan, like Paramecia, has certain subclasses, which refer moreso to the animal's nature:
- Those based on behavior: Carnivorous, Herbivorous, etc.
- Those based on "existence": Ancient, ones that have existed but went extinct; and Mythical, those that hail from legends.
Ancient Zoan are said and somewhat prove to be physically superior than normal zoan, they are rarer than normal Zoan. Like mentioned, the users of these transform into animals that have gone extinct.
Meanwhile, the more famous Mythical Zoan not only grant the common physiology of an animal, but a mythological ability related to their tale. They are even rarer than Logia. So far, we have seen Mythical Zoans that grant only one special ability: Marco's healing flames, Devon's shapeshifting, Sengoku's shockwave emission. Some of these abilities may branch out more than others, but it should be noted one is advised not to stack many capabilities or expanding the scope a lot. In other words, while Marco may be able to summon flames, he doesn't seem to hold the same versatility that a Mera Mera no Mi user would show.
A common misconception is that Marco has two abilities, the one said above and intangibility. However, it has been shown that he is not made of blue flames, rather, he is just enveloped in them and rapidly regenerates.
Another classification whose power is said to be very simple, yet, extremely powerful. Logia allows their users to not only produce and manipulate a substance, but BECOME them, acquiring intangibility when hit by normal attacks.
The substances they become so far have been elements of nature itself: Fire, Lightning, Ice, Mud, Snow. This shows that whether the substance is solid (Ice), liquid (Mud), gaseous (Smoke), or even energy (Lightning), the user will rettain invincibility. Any part of their body can shift into elemancy.
Not only can they mass produce these elements, they also gain certain traits related to them.
The sole exception to the intagibility-as-a-must is the Canon Yami Yami no Mi.
Devil Fruits have odd names, a certain word inputed twice and followed by "no Mi". This certain word directly relates to the fruit's power or theme, they always have two syllabes when using the Japanese alphabet, the Katakana.
Let's break one fruit's name down to explain it:
- The Ito Ito no Mi, "Ito" (糸) is the Japanese word/kanji for "String".
- However, instead of using the Kanji for it as (糸糸の実), we would represent it as (イトイトの実).
- In english, the fruit's name would be "String-String Fruit".
Some of these names directly indicate what the ability is about, while some are more roundabout and use something like onomatopoeias.
A prime example of that is the Logia of Light, which instead of being named something more direct like "Rato Rato no Mi" (Derived from Light/Raito/ライト) or "Hika Hika no Mi" (Derived from Light/Hikari/光), is named the Pika Pika no Mi (ピカピカの実, Glint-Glint Fruit?). That is the sound of "glimmering" spelt in Japanese.
There are many sites listing the onomatopoeia not just for these elements, but for many other actions.
The fruits that have certain variations in their naming scheme are Zoan. Some Zoan have "Series", as in, species under the same family, i.e: a Falcon Fruit and a Phoenix Fruit are both bird fruits. For that, they are named via the animal family (For the Bird, it is Tori Tori), and followed by "Model: Species Name", most of the canon fruit have the species name listed in English. Therefore, we would have a Tori Tori no Mi, Model: Falcon (トリトリの実 モデル:隼, Bird-Bird Fruit, Falcon Model?) rather than something like "Moderu: Farukon".
Artificial Devil Fruits, the SMILE, have a different naming scheme. Rather than a name with two japanese syllabes, it uses a full japanese name followed by "no SMILE", i.e: "Uma no SMILE" (Horse SMILE). Our fanon artificial, the ACE follow a similar scheme, "Raito no ACE" (Light ACE).
Interactions with one another
Given the extreme variation in Devil Fruits and how most of them are based on existing concepts, it is no surprise that some of them have certain interactions with one another.
These interactions can happen in a myriad of ways, depending on the types and powers of the fruits interacting:
- Superiority: Certain devil fruits may have somewhat similar powers, but one will be of higher magnitude. A canon example would be the Ton Ton no Mi and the Kilo Kilo no Mi, both of which alter the user's weight, however, the Ton Ton does it through Tons, whereas the Kilo Kilo is on a lesser scale of Kilos.
- Complete Match: Other Devil Fruits have equivalent or matched powers, either their nature allows them to put one another down, or they are both very strong. One example would be the Mera Mera no Mi's fire cancelling out the Hie Hie no Mi's ice.
- Miscellaneous: A lot of other Devil Fruits have weird relations to one another, all of which are hard to list. A major example is how the Gomu Gomu no Mi is essentially immune to the Goro Goro no Mi's electricity, due to its rubber properties taken to the extreme.
Much like said, there are still a ton of interactions undisclosed here, purely based on the Devil Fruits' natures. Finding them out is up to the roleplayer and the situation they are in.
Interactions with Haki
Due to their myriad powers, a lot of Devil Fruits offer certain defenses against convetional attacks, something that applies to all three types of them:
- The Paramecia Sube Sube no Mi makes the user's skin slippery to the point most attacks, unarmed or not, slip by them. Other Paramecia can indirectly have these effects in a similar vein.
- The Zoan Kame Kame no Mi allows the user to become a turtle, acquiring an extremely hard shell. It should be noted Zoan in general offer enhanced prowess.
- The Logia Magu Magu no Mi lets its user be Magma itself, thus not only making them intangible, but extremely hot. Many Logia have other effects through their intangibility.
By wielding the power of Busoshoku Haki, an attacker shrouds themselves in "Spirit" and interacts directly with a Devil Fruit User's own spirit. This effectively allows them to bypass certain unorthodox defenses (such as the ones listed above) without suffering many effects. Therefore, it counts for offense and deffense in regards to these powers.
Busoshoku is infamous for breaching the intangibility of the Logia, beforehand thought to be mostly invicible. A user of Busoshoku can effectively interact, not just attack, with the element summoned by a Logia as if it were tangible.
This is not infalible. Haki doesn't completely protect from Devil Fruits nor does it negate their powers. Furthermore, the one being attacked can use Haki themselves and mitigate the usage of the attacker's haki. This is implied in a canon example of Trafalgar Law vs. Vergo: Donquixote Doflamingo was sure that by covering himself in Busoshoku, Vergo could defend from the splicing attacks from Law's Devil Fruit, but then Law is also implied to use his own Haki, which is superior to Vergo's, thus rendering the protection almost null.