One Piece Episode 684 English Subbed Episode Title:Gathering into a Powerful Front! Luffy and a Group of Brutal Warriors!.Episode Description:Zoro emerges from the rubble, finding Luffy and Law unharmed by the punch. Cavendish comes in and shows gratitude to the Straw Hats for saving him, but talks about how he will kill Doflamingo. Luffy's group walks away and gets chased by the bounty hunters, and Chinjao catches up to Luffy to thank him. Most of the other strong Colosseum competitors find Luffy's group and argue over who will kill Doflamingo. Their fight against Pica begins as Luffy tries to run away from the rest of the Colosseum competitors. Pica sees Luffy and throws a punch with his huge stone arm, but Chinjao and Elizabello II respond by using "Dragon Drill" and "King Punch" respectively to destroy Pica's arm.