Devil Fruit is a mystical fruit that can give its users a kind of special ability depending on the type of fruit. Also called a cursed fruit because users will not be able to swim again for the rest of their age or commonly known as the term hated oceans. Someone who eats the fruit of the devil is called the Devil Fruit User.

According to Oda, a "certain professor" will appear in the story to provide an explanation of the mechanisms of the working of demonic fruits in the near future.

Paramecia Devil Fruits

Paramecia is the most common type of Devil Fruit, although it is still rare. This type of fruit has the most diverse capabilities, such as Luffy who can turn the body into rubber, Buggy that can separate the limbs, Alvida make the body so slippery, and Sugar has the ability to move objects or turn people into toys.

Zoan Devil Fruit

Zoan allows its eaters to turn into animals, or a mixture of half-animal humans and even a combination of two different animals. Not only ordinary animals, but also ancient creatures such as dinosaurs or monsters from mythological stories. It is said that Zoan fruit that can turn people into animals mythology is more rare than Logia.

Logia Devil Fruits

Logia is the most difficult Devil Fruit to be found, and allows the eater to change into a substance or element. For example be a solid element such as sand, liquid, gaseous substances such as smoke, even plasma or energy like fire and gain the ability possessed by the substance. This certainly makes them very powerful because it can not be easily touched with regular attacks.

Artificial Devil Fruit

Artificial Devil Fruit is one kind of Devil Fruit created with the purpose of scientific research, various types produced by Vegapunk and cooperation between Caesar Clown with Donquixote Doflamingo. So far, only Zoan types are manufactured.