131 - One Piece Episode
: Most viewer guides classify this as an optional "filler" episode. If you are only interested in the main plot, you can skip to Episode 144 to begin the Jaya Arc . However, many fans recommend it for the heart-warming character development between Chopper and Robin.
: This is considered "canon filler" or "mixed canon"—while it is not adapted from the main manga chapters, it expands on character backstories in a way that remains consistent with the original story. One Piece Episode 131
: The episode delves into Chopper's history on Drum Island, specifically the creation of his Rumble Ball —a drug that enhances his Devil Fruit powers. : Most viewer guides classify this as an
