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This article uses material from the “Chopper Tony Tony” article on the One Piece Wiki at FANDOM is licensed under the Creative Commons Attribution-Share Alike License.

Chopper Tony Tony is one of the main characters of the One Piece anime and manga.

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. He came from Drum Island where he learned how to be a doctor, which also makes him the only member of the Straw Hats who was born on the Grand Line.

He is the sixth member of the crew and the fifth to join Luffy, as well as being the youngest member on board. He has a bounty of 100 due to being mistaken for the crew's pet.

In the AWA fics, Chopper is a student at the AWA Academy and is part of Class 12.

In the XP4 fics, Chopper debuted in the XP4 Heroes Coalition - Kick-Off!.


Most of the time, Chopper is a toddler-sized human/reindeer hybrid, but his Devil Fruit abilities allow him to change his appearance depending on the situation. Chopper's left antler is braced at the base by a metal plate because it was reattached after being broken during his search for the Amiudake when he was younger (where he thought the Amiudake can cure Hiluluk's disease) and ran into the leader of his old herd, who severely injured him.[10] He usually wears a large pale red/pink fuzzy top hat with a sideways medical cross (given to him by Hiluluk) and a maroon pair of shorts. He also sometimes wears a blue backpack that has the same sideways medical cross as his hat. He also has a remarkable blue nose. As Oda's style evolved and many readers commented on how cute Chopper was, Chopper has been given a much more "chibi" like appearance, meaning that when in his preferred transformation (which he calls Brain Point), he has a larger head and eyes and a less defined muzzle than earlier in the series. Many female characters, such as Nami, Robin, Makino, Porche, Shakky, and Vivi find Chopper very cute. There are even males that find Chopper cute such as Foxy and Breed.

Similar to most of his male crewmates, Chopper has the same outfit throughout most of the series.

In the Alabasta Arc, he wore a shirt with a green-lined collar, then a bigger one with giant sleeves that is light blue with dark blue liners.

In the Enies Lobby Arc, he wore a red leather jacket.

After two years, Chopper is significantly leaner. He is less potbellied than he was in earlier seasons and his arms/forelimbs are also skinnier. It is arguable that since leaving the cold climate on Drum Island, he has lost significant body fat.  The color of his fur has changed from brown to gold, and according to Nami (when she and Chopper reunite on Sabaody), the texture has gotten softer.

Chopper now wears a blue cap that has a ring of dots around the circle, while the cap has buckles hanging from it. He wears this over his old pink hat. He also wears a white and yellow vertical-striped tank top, which he takes off when he transforms into Heavy Point, and an orange pair of shorts. Aside from being slightly slimmer and having his fur changing from dark brown into a light brown color, Chopper's Brain Point form has not changed. His Walk Point (reindeer) form has grown considerably, now being roughly as tall as Usopp. His horns are larger, he has more muscle, and his fur is longer. His Heavy Point has become exceedingly larger and more muscular, being almost the size of Dosun's. He also developed new transformations through his research during the timeskip, which he debuts on Fishman Island, including Kung Fu Point (which he uses to defeat Neptune's soldiers) and a revised Horn Point (which he uses against Daruma).

While on Punk Hazard, he was given a black coat by Kin'emon using his unnamed Devil Fruit ability. He was later dressed up in samurai attire made from the same ability when the crew had departed from Punk Hazard.

At the start of the Dressrosa Arc, Chopper wore camouflage clothing. After the crew split up, he changed his headgear for the first time since the timeskip, putting on a football helmet with holes for his antlers that has three horizontal stripes running vertically down the middle, with two small ones beside one larger one, as well as large stars on each side of the helmet. He also put on a zippered coat with the same stripe pattern running horizontally all around the middle of the coat, with inverse coloration of the stripes on the helmet and a pattern of stars inside the large stripe on the coat.

During his stay on Zou, Chopper's outfit consists of his original timeskip hat with a crown on top. He wears no shirt and has a long open coat with fur and fancy jewelry attached. Upon leaving Zou, Chopper wore an open doctor's coat.

During the Whole Cake Island Arc, he wore a yellow overcoat and had a pink scarf wrapped around his hat. Afterwards, when meeting with the Fire Tank Pirates he wore an outfit similar to Luffy's, black suit (dark blue in the anime) with a green shirt and a yellow ascot.


Chopper is naïve and extremely timid towards unfamiliar humans, often acting like a child because he does not know any better. Like Luffy, he is easily impressed at things like beams, cannons and hidden abilities. He is a coward at times like Usopp and Nami, although his cowardice can be attributed to his childishness and overall lack of trust in his own fighting skills (a contrast to Nami's self-survival based cowardice and Usopp's insecurity based cowardice). Chopper is more or less on a journey to define himself, seeing almost anyone on his team as a role model and in some cases, imitate their behavior, especially Usopp.

Immensely kind hearted by nature, Chopper is an upright friend and caring companion who will try anything to overcome a task given by his team. Even back when he was Hiluluk's assistant, he would go to extreme lengths just to acquire a mushroom which he thought would cure Hiluluk's chronic disease. He still has a feeling of distrust for humans from his youth, and will often outright insult and claim that compliments do not make him happy even though he is obviously happy about it (he starts to do the "Dirty Old Man" dance which was a bit by famous Japanese comedian Ken Shimura, which became a running gag).[10][11] At least once, Chopper has done this dance while in Monster Point, in which case it did not look cute and only managed to disturb Usopp, who had caused Chopper to react this way by praising his newfound usefulness in being able to now control this form.

Chopper seems to be very forgiving of those close to him, for when Usopp wanted to rejoin the crew at the end of the Enies Lobby Arc, he called out to Luffy and Zoro, although they were ignoring him completely. He would rather run and hide than fight, but becomes more courageous when others are there to support him.

His dream is to carry out his deceased mentor, Hiluluk's belief that there is no incurable disease, and to become a doctor that can cure any illness. To this end, his childish nature vanishes whenever his medical skills are required; he does not hesitate in the least in any actions regarding the well-being of his patients.

A extremely dedicated follower of the Hippocratic Oath, Chopper strongly believe that a doctor's duty is supposed to help save people, and becomes angered when somebody treats life without the proper respect. This was why he was greatly furious at his former hero, Dr. Hogback, when the man treated the patients' and Zombies' lives, and deaths, so callously. He was also utterly enraged at Caesar Clown for kidnapping and experimenting on children as well as making them addicted to drugs. Adhering to his beliefs, Chopper would readily help any injured victims or patients he come across and does it with immense determination. He was determined to help Mocha and the other children who were tricked into becoming test subjects in Caesar's deadly experiments. Similarly, Chopper wasted no time in treating the Mink Tribe after they were brutally devastated by the Beast Pirates. Also, Chopper holds his position as a doctor in high regards and will become distraught if he failed to save someone. When Luffy was on the verge of death from eating the skin of a poisonous fish, Chopper tried every antidote with no success, causing him to claim he had no right to call himself a doctor.

Another one of Chopper's habits is his reverse cartoon peek, where he stands behind a wall or a doorway and peeks at people, trying not to be seen by them. Unfortunately he is not hiding his body behind the wall, as a result his body is visible and only one half of his face is hidden.

Chopper being the youngest is the most emotional Strawhat and very much considers the crew his "family", when forced to be part of the Foxy Pirates during the Davy Back Fight Chopper was distraught and cried that he was a Straw Hat and only stopped bawling when Zoro ordered him to "man up".

A running gag is that Chopper will believe just about anything he hears, making him easy prey for Usopp's stories and his "Sogeking" disguise. He also believed Nami when she lied to Lola about being a man, even though the truth was very obvious. In fact, until Jinbe stated otherwise, he thought that the captain's duty was not to listen to anyone. Chopper also believed the Impostor Straw Hat Pirates were the real Straw Hats despite them looking nothing like their real counterparts.

He also tends to panic quickly, and subsequently let some crucial facts slip his mind. One example is when there is someone who is injured, he often panics and screams "Call a doctor!!". It is not until he figures out that he is the doctor that he starts to tend to the injured person. Another one is when he (and Brook) jumps into the water without hesitating to save Luffy from drowning, only to drown with him (since the Devil Fruit which he had eaten makes it impossible for him to swim). He, together with Brook and Luffy, ends up being saved by the other members of the crew.

After the timeskip, Chopper seems to have grown more confident, much like Usopp. He no longer strives to be looked at as a human, now only wanting to "be a monster that can help Luffy" as he put it. He even has grown mature enough to smack his crewmates, mostly Zoro and Luffy, when they try to do something stupid or extreme. He also seems to have outgrown most habits mentioned above, but his habit of peeking still remains.

Chopper is capable of romance, though he shows no interest in human females e.g. Nami, but he was blushing around the beautiful reindeer mink, Milky, acting in very Sanji-like manner with love hearts replacing his eyes. Usopp noted on this unusual behavior, but Chopper told him to shut up.

XP4 Fanfic

Chopper is a member of the Heroes Coalitions and is part of the Super Sixth Squad. He also attends the Vanguard Academy as a student.

XP4 Heroes Coalition - Kick-Off!

In Chapter 5, Chopper, alongside his team - the Super Sixth Squad, are seen chasing after the Citrus City Parkour Thieves somewhere in Citrus City and managed to capture all of them.


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.

Tactical Skills

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.

Medical Expertise

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.

During the two years he spent in the Torino Kingdom, Chopper's knowledge of pharmacology have vastly increased. In the Torino Kingdom, Chopper self studied many books of new and highly effective remedies, ointments, unknown herbs with great healing properties and other medicinal drugs that were developed by the inhabitants of the Torino Kingdom which are largely unknown to the rest of the world. With this new understanding of medicinal drugs, combined with the medical skills he had already mastered in the Sakura Kingdom, the scope of Chopper's healing skills as a doctor have become noticeably wider. The greatest example of this is during the Zou Arc, as Chopper, with the assistance of the Mink Tribe's doctors, was able to use all of these skills to treat the gigantic, thousand year old elephant Zunesha, whose leg was badly injured by the Beasts Pirates. 

In addition, while he was under the apprenticeship of Dr. Kureha, Chopper became aware of the highly addictive drug NHC10 (which only selected scientists in selected countries are allowed to use), and its harmful side effects. He is capable of stabilizing the condition of someone suffering from an overdose of the drug.

Another testament to his intelligence was that he was also able to invent his very own drug known as the "Rumble Ball", through a little research, which helps to increase his Devil Fruit's fighting capabilities.

He has also been shown being able to give successful blood transfusions (even between two different species: a human and a fish-man, though human and fish-men do carry the same blood), as he did to save the lives of both Sanji and Luffy, after too much blood loss (even knowing their correct blood type: Luffy's blood type being F(the same as Jinbe's), and Sanji's blood type being S RH- (an unusually rare blood type)).

  • Art of Compounding: Chopper pulls out a bowl to grind up ingredients to make medicine that can heal his allies. Used by Chopper as his Unique Special Action in One Piece: Burning Blood.

Devil Fruit

Main Article: Hito Hito no Mi

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.

Rumble Ball

Main Article: Rumble Ball

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.

However, due to the risk of this alteration, the Rumble Ball's consumption must be closely monitored, and for this reason Chopper cannot consume more than one every six hours. If he takes a second one, his transformations would become out of control. And if a third one is taken, Chopper transforms into a massive, berserk monstrosity (as witnessed at Enies Lobby and Sabaody Archipelago) with equally monstrous strength that requires lethal amounts of energy to keep active, making Chopper a danger to both himself as well as others.

Prior to the time skip, Chopper could transform into five different forms under the influence of the Rumble Ball: Jumping Point, Guard Point, Arm Point, Brain Point and Horn Point. After the two-year timeskip, he is seen being able to perform formidable martial art maneuvers with his new form called, "Kung Fu Point", a melding of Arm Point and Jumping Point, and is now able to produce a new "Horn Point" with larger "Stag Beetle" like antlers which are useful for digging in the ground at high speeds, along with a new and improved "Guard Point" which is now able to grow big and strong enough to protect the Thousand Sunny from one of the Kraken's tentacle's. In addition, he is able to utilize those forms without consuming a Rumble Ball; instead, eating a Rumble Ball now allows him to enter his most powerful form, Monster Point, and fight in it for three minutes. How he managed this is currently unknown.

Physical Abilities

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.

In addition to the various transformation of his Devil Fruit, Chopper is also a powerful self taught hand to hand combatant. He is very skilled in boxing and wrestling which he typically combines with the increased physical strength of Heavy Point to defeat numerous enemies with ease. With Kung Fu Point, he can use Kung Fu, which he used to defeat several members of the Ammo Knights, which consist of fish-men who possess ten times the strength of ordinary humans.

Other Capabilities

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.

Chopper, who was originally an animal, is also capable of communicating with and understanding other animals, which has come in handy during certain points in the story. He also has a sensitive nose that can be used for tracking others (except during rainy weather). But because his nose is so sensitive, strong aromas such as perfumes can irritate his sense of smell.[13]

Chopper also seems to have a technique called Anaesthesia (麻酔, Masui; Sedative, in the English manga), which involves Chopper injecting 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.

Due to his innocence and lack of interest or sexual attraction to human females, Chopper is incapable of being seduced by human females and it is implied that this trait also renders him immune to the effects of Boa Hancock's Mero Mero no Mi.

Chopper has at least some knowledge of carpentry, as he was seen repairing the damages on the Thousand Sunny after the escape from Totto Land in Franky's absence.


  • Chopper has his own jolly roger, as the other members of the crew do, which is a regular Jolly Roger surrounded by cherry blossom petals that also look like deer hooves. It was the one used by his adoptive father Hiluluk and eventually the Sakura Kingdom as well, which makes him the only Straw Hat whose personal Jolly Roger was first used by someone else. This one is commonly used in merchandise purposes such as key chains.
  • Chopper is possibly based off of Rudolph the Red-Nosed Reindeer as Chopper not only is a reindeer, but one with an unusually colored nose that caused his family to shun him.
  • A running gag in the series is that when in a cold climate, someone in the crew always asks Chopper to take his fur off to be used as a coat. Chopper always falls for it before he exclaims that his fur cannot be removed.
  • He is the first non-human Devil Fruit eater shown.


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