Luffy was able to manifest the advanced versions of Armament Haki and Conqueror's Haki. For the former, Luffy trained in the Prisoner Mine, and learned how to deal internal damage using Ryuo.

With such a big arc, it is no surprise to know that Oda is also aiming to give the fans big battles, and that's precisely what the Holt Knights are in the country for. As always, the Monster Trio will ...

Gear 4 Known as one of Luffy’s most powerful forms, Gear Four is a beast to handle. After being taught the ways of Haki, this Gear combines Luffy’s inflation ability with Busoshoku Haki.