These Devil Fruits are all incredibly powerful, even if their appearances have never actually been shown in One Piece.

Chapter 1138 of One Piece reveals that Shamrock’s sword possesses the power of a devil fruit, granting it the ability to transform into the famous three-headed hound, Cerberus. Though the chapter does ...

One Piece has two power systems in the forms of the Devil Fruits and the mysterious Haki, the latter of which is especially important to the anime/manga.