Tony Tony Chopper

(From Wikia)Tony Tony Chopper, also known as "Cotton Candy Lover" Chopper, is the doctor of the Straw Hat Pirates. Chopper is a reindeer that ate the Hito Hito no Mi which is a devil fruit that allows its user to transform into a human hybrid or a human at will.

Doctor: Hand me the vial, Chopper.
Tony Tony Chopper: Yes, mam.