One Piece Episode 290 English Dubbed Episode Title:Uncontrollable! Chopper's Forbidden Rumble!.Episode Description:As Zoro's strategy to use Usopp as a weapon falls apart, Chopper's breather concludes as an overweight Kumadori frees himself from the fridge after eating everything inside. But Kumadori uses his Life Return ability to digest the eaten food and regain his usual figure, explaining the ability to a fascinated Chopper before they resume their fight. Chopper quickly realizes that he cannot break through Kumadori's body-hardening technique without the effect of his Rumble Ball drug. Regardless of the risk as he already used one to save Nami and should not take another for six hours, Chopper uses a second Rumble Ball. Despite the erratic transformations, Chopper manages to enter Armed Point to land a hit on Kumadori. However, the attack only infuriated Kumadori as he beats the now weakened Chopper to submission before preparing for the deathblow. But Chopper, remembering Kureha warning him not to take the risk again after learning of the devastation he caused the first time he did it, is left with no recourse but to use a third Rumble Ball with the thought to protect his friends. As a consequence, Chopper transforms into an oversized and purely instinct-driven version of himself that Kureha had best described as a monster.