Tony Tony Chopper ( トニートニー・チョッパー , Tonī Tonī Choppā ) is a doctor and a blue-nosed reindeer . The power of the Zoan -type Human-Human Fruit ( ヒトヒトの実 , Hito Hito no Mi ) provides him with the ability to transform into a reindeer or a reindeer hybrid. [ ch. 140 ] A self-developed drug he calls Rumble Ball ( ランブル・ボール , Ranburu Bōru ) enables him to perform even more transformations. [ ch. 149 ] When complimented, Chopper acts really sad and sometimes yells at the animal who complimented him to stop trying to make him happy. [ ch. 140 ]
Believing Usopp's immunity to have been a fluke, Perona sent four Negative Hollows through him, but instead became depressed herself alongside her ghosts, to the shock of her zombies.  Soon afterward, Perona fled from Usopp while noting that she could defeat the other Straw Hats if it were not for him. After Kumashi distracted Usopp by attacking him, Perona projected her spirit from her body after hiding and tricked Usopp into believing she was flying while proclaiming that she had come up with a plan to defeat him.  Declaring that she had simply been caught up in the moment before, Perona attempted to cheer Usopp up once more before appearing behind him in a giant form. After dodging Usopp's Ageha Ryusei, Perona reverted to her normal size before placing her hands inside of Usopp's chest and pretending that she was going to crush his heart, only to reveal that she could not do such a thing. Usopp attacked her with Rokuren Mamushi Boshi, but Perona demonstrated her intangibility by letting the attack go through her and moving through the floor. When Usopp pointed out that she could not touch him either and demanded to know how she could attack him, Perona summoned some Mini Hollows and demonstrated their explosive power on a nearby wall before attacking Usopp with one as well. After tricking Usopp into running into a pillar, Perona covered his body with Mini Hollows and detonated all of them before gleefully watching Kumashi brutalize Usopp. However, Perona was shocked to see Usopp, who had donned his Sogeking mask, purify Kumashi with a salt ball before fleeing once more. Wounding Usopp with a barrage of Mini Hollow blasts once more, Perona decided to hand him over to Moriah, but was surprised when Usopp figured out her trick and used Atlas Suisei to expose the room containing her true body.