One Piece Odyssee

Most of the time, Chopper is a toddler-sized human/reindeer hybrid, but his Devil Fruit abilities allow him to change his appearance depending on the situation. Chopper's left antler is braced at the base by a metal plate because it was reattached after being broken. He usually wears a large pale red/pink fuzzy top hat with a sideways medical cross and a maroon pair of shorts. He also sometimes wears a blue backpack that has the same sideways medical cross as his hat. He also has a remarkable blue nose

Chopper is naïve and extremely timid towards unfamiliar humans, often acting like a child because he does not know any better

Chopper never felt that he belonged somewhere. He didn’t felt as a human but neither like a reindeer. Eventually he met Doctor Hiroyuki who taught him medicine. When Hiriluk died, he was taken in by Hiriluks friend Kureha