Luffy experimented with his Gear 4 mode so much that he was eventually ... When assuming this form, Luffy always has a deadly serious look on his face, adding to the intimidation factor.

Gear 4 has multiple forms as well ... and an ability that essentially makes Luffy fight with immense freedom, with a smile on his face. Most importantly, it buffs up his body even more, and ...

The Gum-Gum Shotgun Was A Unique Variation On A Classic Attack ...

One Piece's Elbaf Arc just set up the perfect way to reveal Luffy's dream through one Holy Knight's broken devil fruit ability.

One Piece just gave one Holy Knight a devil fruit power as broken as the Nika Fruit, setting him up as Luffy's next opponent.