Devil Fruits are the main power system in One Piece, and Haki is a close second. In fact, the argument can be made that Haki is inherently more useful than Devil Fruits. Most of One Piece's villains ...

One Piece has introduced a wide variety of Devil Fruit users and Haki users. Plenty of heroes and villains alike showed off their mastery of one or more forms of Haki, giving them an extra edge in ...