When assuming this form, Luffy always has a deadly serious look on his face, adding to the intimidation ... he revealed his long awaited Gear 4; specifically, his Boundman form.

Luffy still has a long way to go. So, let's take a look at why this is and what fans could expect from Luffy by the end of the franchise. A theory regarding Shanks' and Scopper Gaban claims that ...