All of Luffy’s Forms In One Piece Ranked Weakest to Strongest
via screenrant.com
Short excerpt below. Read at the original source.
On his journey to become the pirate king, Luffy has tried and failed many techniques to increase his strength and defeat many powerful enemies. This means that, similar to many other shōnen heroes, in the more than a thousand episodes of One Piece, Luffy has revealed a few different transformations.