After being cast out by his family because of his peculiar appearance in the One Piece anime franchise, Chopper is taken in by Hiruluk, who cares for him and mentors him into becoming a doctor. The reindeer in his normal form is small and cute. However, that can quickly change into a massive creature because of the effects of the Hito Hito no Mi demon fruit. After Hiruluk’s painful demise, Chopper continues training with Kureha, becoming a brilliant doctor with great potential.