Tony Tony "Cotton Candy Lover" Chopper is a doctor and a blue-nosed reindeer who gained human properties by eating the Zoan-type Human-Human Fruit Using a self-developed drug he calls Rumble Ball , Chopper can assume more than the three forms provided by his Devil Fruit ability alone. When complimented, Chopper acts really happy while either telling the person who complimented him to stop trying to make him happy, or that Chopper isn't very happy. His voice actress is Ikue Ōtani. In the 4Kids and Funimation English adaptations, his voice is supplied by Lisa Ortiz and Brina Palencia, respectively.
When creating Chopper, Oda stated that he wanted a mascot who is both cute and fearless. An IGN review of the manga praised Chopper's character as one of the best in the series and said that he was able to be both touching and funny. Oda said that the message he wanted to illustrate in regards to Chopper's family situation is that a person who is not blood-related to another person can still be considered as a member of one's family.