Facing the formidable CP9 agent , Chopper finds himself completely overwhelmed. After already consuming two Rumble Balls, which has left his transformations unstable and physically taxing, he realizes he cannot win in his current state. With the safety of the Straw Hat crew on the line, Chopper makes a fateful decision: he consumes a third Rumble Ball . The Birth of a Monster
The result is the debut of , a transformation so powerful and "forbidden" that it destroys both ally and enemy alike. One Piece Episode 290
While this primary story unfolds, the episode also touches on other Straw Hat battles, including chaotic fight against Fukurou and Zoro's ongoing struggle against Kaku . However, the overwhelming highlight remains the tragic, monstrous price Chopper pays to protect his family. Episode 290 | One Piece Wiki | Fandom Facing the formidable CP9 agent , Chopper finds