One Piece Episode 519 -

: Chopper continues to follow the Fake Straw Hat Pirates, believing they are his actual friends despite their vastly different appearances and cruel behavior.

, titled "The Navy Has Set Out! The Straw Hats in Danger!" , is the third episode of the "Return to Sabaody" Arc. It originally aired on October 16, 2011. Key Events One Piece Episode 519

: Brook performs his final concert as "Soul King" at the Sabao Dome, revealing to his fans that he is returning to piracy with the Straw Hat crew. : Chopper continues to follow the Fake Straw

Everything that's holy, this is beyond infuriating. (Spoiler for ep 519) finally realizing he was following imposters.

: Chopper eventually runs into the real Nami and Usopp, finally realizing he was following imposters.