Tony Tony Chopper

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, a Devil Fruit that allows its user to transform into a human hybrid or a human at will. He came from Drum Island where he learned how to be a doctor, and is the first member of the Straw Hats who was born on the Grand Line. His dream is to one day become a doctor capable of curing any disease and wants to travel all across the world specifically in the hopes of accomplishing this dream. He is the sixth member of the crew and the fifth to join Luffy, as well as being the second member to rejoin the crew, after temporarily being forced to join the Foxy Pirates during the Long Ring Long Land Arc. Additionally, he is also the youngest member on board. He has a bounty of Beli100 due to being mistaken for the crew's pet. Typically, it is rare for doctors to fulfill roles other than medical practices for the benefit of those around them, but as the Straw Hats' doctor, Chopper's responsibilities are not limited to just medicine alone. He occasionally performed tasks like steering the ship as their unofficial helmsman while on the Going Merry, and during the heat of battle, he can also fulfill the role of a physical fighter to support his friends.

However, due in part to his lack of battle experience or formal training (as well as his Rumble Ball's time limited effect) Chopper was originally considered part of the "Weakling Trio" along with Nami and Usopp.This lay largely in his lack of battle intuition and naïveté at the time, though it is shown that he has gotten much more capable after his two years of training on Torino Kingdom. In spite of his usual fearful behavior, Chopper is shown to have a strong will as he withstood a burst of Haoshoku Haki from Big Mom. During the Whole Cake Island Arc, Chopper showed great tactical skills in the middle of his confrontation with Charlotte Brûlée as he and Carrot came up with a method to deceive her by using a decoy of Carrot created by Brûlée's power. He has shown to be very analytical, as he examined his surroundings before taking action. He pretended to remain restrained by chains in his Heavy Point, and when Carrot toppled the soup towards Brûlée and electrocuted most of the enemies, Chopper used the element of surprise by changing into Brain Point to break free before using Monster Point, subjugating the Crocodile homie and wiped out the remaining enemies.

Chopper even thought of exploiting Brûlée's Devil Fruit ability to transverse Big Mom's territory through the Mirro-World in order to find and save his friends while remaining undetected by a majority of the Big Mom Pirates. His strategy received praise from Capone Bege, the captain of the Fire Tank Pirates and a master tactician. During the mission to rescue Brook, Chopper used a skeleton with sea weed for hair to use as a replacement for Brook after they retrieved him from Charlotte Linlin. Because he is originally an animal, Chopper can understand and communicate with other animals, thus allowing him to serve as a translator between animals and humans. Having studied under Dr. Kureha, one of the finest doctors of the medically advanced Drum Kingdom, Chopper himself is an extraordinary doctor with outstanding knowledge of both medicine and medical drugs as well as the preparations of most remedies and ointments that can be made from regular fruits, herbs, roots, and vegetables that can be found and used on most islands. He is also capable of administering surgery and resuscitation. Overall, Chopper can treat even the most brutal injuries, as shown when he managed to save Zoro's life, who was on the verge of death after he absorbed all of Luffy's pain and fatigue from Kuma's Devil Fruit Powers. Chopper has eaten the Hito Hito no Mi, a Zoan-class Devil Fruit which allows him the ability to transform into a human and human-reindeer hybrid at will. However, the fruit has granted Chopper more than just the ability to transform; it has also given him human intelligence, which allows him to both speak and think like an actual human. This is what allowed Chopper to become a doctor and learn about medicine in the first place, which is impossible for a normal reindeer. While Chopper is usually seen in his human-reindeer hybrid form, which is a tanuki-like chibi-creature, he would sometimes transform into his human form to try and fit in with humans, often with minimal success. But when in combat, he also uses his Devil Fruit powers in order to fight his enemies with the strength given to him by the fruit and usually transforms into whatever form best suits the situation.

In addition to his three forms granted by his Devil Fruit, Chopper has also invented a yellow jaw-breaker like drug called the "Rumble Ball", through some research. This drug has the power to distort the wavelengths of the Devil Fruit's transformation, allowing him access to additional transformations for three minutes. As a reindeer, Chopper was naturally born with high levels of cervid speed and agility. After consuming the Hito Hito no Mi, Chopper gained enhanced human physical potential added to his own. He has extreme levels of superhuman endurance, able to withstand powerful attacks from Kumadori, and even when badly injured, Chopper could force himself to transform into Monster Point and ultimately survived the immense strain, despite his injuries and fatigue that left him unable to move. During the two years he spent in Torino Kingdom, Chopper underwent extensively intense physical training to further increase his natural physical strength in his based form, which results in vast improvements of his Zoan Devil Fruit enhanced physical abilities whenever he transform. His Heavy Point is now powerful enough to counter a hammer strike from a energy steroid enhanced Dosun as well as holding back a door against a group of rampaging gigantified children. His new Kung Fu Point form possesses the extreme punching strength of Arm Point while retaining the immense agility of Jumping Point. His Brain Point which is his weakest form is now strong enough to easily carry two large iron balls while running at full speed to escape from a murderous Brûlée. Chopper's immense medical knowledge of the bipedal anatomy has also proved useful when the Straw Hats were trying to bring down Oars, during which time, Chopper formulated several theories on where it was best to target the colossal adversary, and finding the giant's weak spot. And while naïve, he can also be quite a capable strategist, as seen in his fights against the Mr. 4 and Miss Merry Christmas pair and Gedatsu. Masui, literally meaning "Anaesthesia"): Chopper injects a substance, possibly an anesthetic, into the opponent's body making them faint. This was first used on Luffy when he had a hallucination of a tsunami about to hit them while walking to Yuba in the Alabasta Desert, and it was later used in order to stop a group of rampaging giant children on Punk Hazard, with some assistance from the G-5 Marines. In the English manga this technique is called Sedative.