Luffy could have another transformation after Gear 5. Oda has already set it up in One Piece.
Game Rant on MSNOpinion
One Piece: Oda officially reveals Luffy's end of series power level
Luffy is strong, but he has yet to reach his true end-of-series power level in One Piece.
Luffy and Zoro are both strong. However, the strongest of the two has been revealed in One Piece.
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