Gear Fourth first appeared during Luffy’s battle with Donquixote Doflamingo in the Dressrosa storyline. The form debuted in One Piece manga chapter 784 in 2015, followed by its anime introduction in episode 726 in 2016. Its inflated body, immense strength, and unusual movement made the transformation immediately memorable. The form is commonly called Boundman in official English material, while Bounce-Man remains a familiar fan spelling. Clips of the reveal continue to appear in anime edits, power-scaling discussions, reaction videos, and transformation memes.
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A One Piece anime clip of Monkey D. Luffy revealing Gear Fourth: Bounce-Man for the first time, used for power-up edits, transformations, and hype reactions.
This clip captures Monkey D. Luffy’s first Gear Fourth: Bounce-Man transformation in the One Piece anime. The roughly 17-second excerpt centers on the reveal, combining Luffy’s forceful vocal delivery with the heightened energy of a major battle power-up. Its pacing builds anticipation before landing on the new form, giving the moment a dramatic, triumphant punch. For viewers familiar with the series, it recalls a pivotal escalation in Luffy’s fight; for everyone else, the intensity still reads instantly as a character unlocking a stronger mode.
