One Piece (dub) Episode 521 ✓

Luffy’s disguise is destroyed during a Pacifista attack, revealing his true identity to the shocked crowd and the "Fake Straw Hats".

"One Piece" Sentou Kaishi! Misero Shugyou no Seika ... - IMDb One Piece (Dub) Episode 521

The anime adaptation adds several original scenes to expand the action: Luffy’s disguise is destroyed during a Pacifista attack,

The pair arrives and simultaneously defeats another Pacifista ( PX-7 ), further proving the crew's newfound strength. One Piece (Dub) Episode 521

Fans generally view this episode as a satisfying payoff to the time skip. The moment Luffy "one-shots" the Pacifista—the same machine that previously defeated the entire crew—is considered one of the series' most iconic turning points.