Tony Tony chopper a toddler-sized reindeer known as the doctor of the straw hats recently He learned how to transform humans into animals and with this discovery,Chopper, full of mischief,is looking for humans to transform them into cute reindeer during Halloween It may seem small and harmless but the transformation is immediate and permanent! Don't enter his territory or you'll be a reindeer forever! Chopper transforms his victims using a needle filled with reindeer fluid and a powerful serum