I made this out of boredom, and to get some DF ideas out of my head. I'll update this whenever I come up with something new. If you've got any ideas of your own for Devil Fruits, PM me and I'll see if I can fit it in!

I don't plan on including canon Devil Fruits, however.

[Content translated from original language]

After witnessing some truly incredible things during my time on the Grand Line, I have decided to put the pen to paper and write about the phenomenon known as 'Devil Fruits'.

Many of the islanders I have spoken to either dismissed the idea of such things as mere myth, whereas others cursed the very idea, calling them 'unnatural'. Very few had met or knew a fruit-user, and a select few even had fruits of their own.

While many view them as either a myth or an abomination, one cannot deny a Devil Fruit user, however worthless their power seems, should not be underestimated.

Thus, the following will be a list of Devil Fruits I encountered on my adventures; I shall list their powers, strengths, weaknesses, and usages, as much as I can with my admittedly limited knowledge.

Now, the first thing I should establish is the different categories of Devil Fruits; each Devil Fruit will fall into one of three categories, without fail.

The first category is also the most common - Paramecia. Also called 'Paramythia' by some cultures, these fruits are the most varied in terms of powers; generally, they grant the user a random power, either focused around their own body or their immediate surroundings. These Devil Fruits can be either very strong, or very weak depending on the power, and how the user of such power utilizes it. I have seen weak-sounding powers being used to devastating effect, and powerful fruits being squandered on weak users. But as I have stated: no matter what, do not underestimate Paramecia Devil Fruit users.

The second category is less common, but still appears often enough for it to be considered 'average' (if such a thing exists for Devil Fruits). Zoan-type Devil Fruits allow the user to transform fully into some sort of animal, or become a hybrid of the animal and their original species, granting the user the physical attributes of said animal in addition to a boost to physical strength and stamina. These sorts of Devil Fruits, in combat, are known for close-quarters fighting styles, to maximize the benefits of these sorts of fruits. It should be noted that Zoan Fruits can actually be applied to inanimate objects such as weapons, thus bringing them to life; however, the method to do this is unknown.

There also exists two sub-categories of Zoan Devil Fruits, known as Mythical and Ancient Zoans. Both types are extremely rare, even more so than the third category of Devil Fruit, but are also much more powerful than the average Zoan.

Mythical Zoans allow the user to transform into some sort of mythical creature, something that would not naturally appear in nature, only in stories and folklore. These Devil Fruits are extremely powerful and offer the user additional powers related to the mythical creature in question, in addition to the boost to strength and stamina all Zoan users benefit from.

Ancient Zoans, on the other hand, allow the user to transform into creatures that no longer exist, having gone extinct, such as dinosaurs. These Devil Fruits, unlike Mythical Zoans, do not offer any additional bonuses aside from strength and stamina; however, that boost is much, much larger than one would gain from a normal Zoan-type fruit, making them extremely strong and resilient.

The final category of Devil Fruit is known as Logia; these fruits are the rarest of the three types (though slightly more common than Mythical and Ancient Zoans), as well as renowned for being the most powerful type. Logia fruits allow the user to generate, manipulate, and transform into some sort of natural element. Specifically, the transformation aspect of their power gives many people the impression the users of such powers are invincible; this is not the case, as these types of Devil Fruits require conscious activation to utilize, though one may train themselves in the usage of such power to activate it on reflex.

Another thing I should mention is that all Devil Fruits hold the same set of weaknesses, though some fruits possess additional weaknesses based on the type of power bestowed.

The first and most obvious weakness Devil Fruit users suffer from is an inability to swim; though the cause for this is unknown, contact with large quantities of seawater will sap a fruit-user of their strength and power, reducing them to a normal, albeit extremely weak, person. Drowning is a very common cause of death among Devil Fruit users, as the weakness will cause many to sink quickly and be unable to rescue themselves.

The next weakness is known as Seastone; also referred to as Sea Prism Stone, this special material is both rare and extremely expensive, as well as extremely durable, measuring up to roughly the same toughness as diamond. This materials' special properties, however, is what makes it so valuable - its ability to prevent Devil Fruit users from using their powers, sapping their strength through touch much the same way seawater does. Some Devil Fruit users I have met claim that Seastone's effect is slightly weaker than that of seawater; whether this is true or not is unknown, however.

The following pages will detail the Devil Fruits I have come in contact with over the course of my journey.