Watch anime online, stream anime episodes for free, you are watching One Piece Episode 437 English version online and free episodes. Anime Episode guide, Chapter One Piece Episode 437 English Subbed For His Friend! Bon Clay Goes to the Deadly Rescue! After Luffy’s defeat, Magellan has him imprisoned in Level 5 until the poison kills him. Mr. 2, having taken Hannyabal’s appearance, resolves to rescue Luffy in order to make up for abandoning him in the fight with Magellan, but learns that no antidotes can save him now.