Tony Tony Chopper

Tony Tony Chopper is the doctor of the Straw Hat Pirates. He is a reindeer that ate the Hito Hito no Mi and comes from Drum Island.

Appearance
Most of the time, Chopper is a toddler-sized human/reindeer hybrid, his devil fruit abilities allow him to change his appearance depending on the situation. Chopper's left antler has a metal plate wrapped around it at all times, from being broken in a fight when he was younger. Chopper also has a remarkable feature that no other reindeer have, and that is blue nose, while normal reindeers have black ones.

A running gag is that various characters in One Piece think Chopper is a tanuki (raccoon-dog, often simply translated as "raccoon") whilst in his Brain Point form. This is a play on the similar word "tonakai," the Japanese word for reindeer, from which the "Tony" in Chopper's name is derived. His heavy point form likewise is mistaken for a gorilla or an abominable snowman.

Oda has stated that he uses the color pink to represent Chopper, and (Oda was answering the questions as Chopper) for his smell, "how am I supposed to know?".

Personality
Chopper is naive and highly timid often acting as a child because he doesn't know any better. 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. When Chopper recognizes someone needs medical attention he often will start to panic and scream for a doctor, just to realize that he is one. He would rather run and hide then fight, but becomes more courageous when others are there to support him.

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's not hiding his body behind the wall, as a result his body is visible and only one half of his face is hidden.

He is an upright friend and companion who will try anything to overcome a task given by his team. He still has a feeling of distrust for humans for his youth and will often outright insult and claim that compliments don't make him happy to a human who compliments him while obviously being happy about it (he starts to smile and also dances a little).

He is also a doctor with high moral grounds in reguards to the living and dead respectively. He dismissed Doctor Hogback for making people suffer just to animated corpses that weren't even alive, as well as dismissing Hogback's own view that so long as the corpse moves it is alive. Chopper's ealrier respect for Hogback was a the dream every doctor has of bringing back the dead as he know this would heal all wounds left behind by a persons passing.

Crew
In the group, Chopper often fools around with Usopp and Luffy for laughs and is also a thankful listener to Usopp's lies, most of which he really believes, at least for a short time. Robin calls him "Doctor-San" which makes him dance in joy. Sanji originally wanted to cook Chopper and jokingly wants him to joins as "emergency food supply" continues to refer to him as "the emergency food supply" to tease him but considers him a friend. Chopper originally wasn't hired to be the ship's doctor by Luffy, but just for being a "cool reindeer that can transform". The other boys of the crew have often mentored Chopper on what it means to be a real man; He is the youngest crewman, not originally human, and has had a relatively sheltered life.

Friends
Back on Drum Island, the people have come to accept his help in defeating Wapol, even though originally they were afraid of him. Chopper has also gained Dalton's respect.

Enemies
Chopper initially idolized Dr. Hogback, but after learning of his disregard for human life and coming into conflict with him and the rest of Gecko Moria's forces, he declared that he no longer considers him a doctor. He is wanted by the Marines, albeit with an extremely low bounty.

The Herd
Chopper's real family is a herd of Reindeer, who abandoned him for being different. Initiallly estranged for being born with his blue nose, he is further abandoned after eating the Hito Hito no Mi, which gives him an "unreindeer-like" humanoid form. He eventually found his paths intertwined with them during his days with Hiriluk and was beaten up. However he was able to pass through them despite this and achieve his goal at the time.

Hiriluk
Hiriluk was Chopper's mentor who took him in and became his "father". They had a close relationship with each other, and had formed a deep bond despite their almost constant arguing with each other. Despite his time spent with the superior Doctor Kureha, Chopper refers to Hiriluk as "the greatest doctor in the world."

Kureha
Though neither family nor claiming to have adopted him, Doctor Kureha is his mentor. While she often hides her feelings towards him she considers him like a "son" to her. She is happy to know he is currently well.

Abilities and Powers
Basic Transformations: As previously mentioned, Chopper ate the "Human-Human Fruit". This is a "Zoan"-type fruit which gives the one who eats it three basic transformations:


 * Walk Point: This is Chopper's true form, useful for general travel on foot. It is also in this form where his olfactory senses are at their highest. As a result, Chopper often make use of his default form for tracking purposes, though certain scents seem to dull his sense of smell. Chopper's reindeer appearance often comes in handy, as enemies will usually assume he is just a harmless pet when they haven't heard him speak. This was especially useful in Alabasta, when he played an instrumental role in Sanji breaking the others out of Rain Dinners. Called "Sprint Boost" in the English dub and "Limb Boost" in the English manga.


 * Brain Point: With a small body and large head, this form is how Chopper is generally characterized in media. Different from humans who eat zoan-type Devil Fruits, Chopper generally doesn't remain in his real form, and this can be explicated due to the advantages of having free arms, also needed for using his medical abilities. He is smarter in this form, and also inexplicably cute. In addition he can scope out an enemies weakness in this form while he is under the influence of a Rumble Ball. This is also the form where he does his best thinking because he can utilize both human intelligence and reindeer sensitivity at the same time. In the English version, Brain Point is called "Brain Boost".


 * Heavy Point: Chopper's "human" form, which gives him the form of a tall, muscular ape-man. He uses this form to help steer the ship. This form imbues Chopper with super-human strength. In fact, when he first used this form against Luffy and Sanji (who were trying to catch him and eat him) Chopper was able to knock both Straw Hats out at the same time. This form is called "Heavy Boost", and his voice becomes deeper, while in the Funimation English dub (and manga) it's called "Weight Boost" and his voices stays the same(such as in the Japanese version).

Rumble Ball Transformations: Additionally, Chopper has added on to these by use of the "Rumble Ball", which gives its user several more transformations for three minutes by 'distorting the wavelengths of transformation':


 * Jumping Point: Chopper keeps his reindeer legs in a human-like form, which allows him to jump long distances. "Jump Boost" in the English version.


 * Arm Point: Chopper's second most powerful form, his fore-hooves become extremely muscular in his human-esque form, allowing him to deliver devastating punches with his front hooves. In the English version, this is called "Arm Boost."


 * Horn Point: Similar to Walk Point, but Chopper's forelegs get bulkier and his antlers become larger and sharp. In addition, Chopper has human fingers in this form. In the English version it is called "Horn Boost".


 * Guard Point: Chopper's fur grows out and becomes an impenetrable shield against outside attacks. He looks like an overgrown Chia Pet in this form. In the English version it is named "Guard Boost".

It is likely that Chopper will discover other forms that he can transform into. It has recently been revealed that Chopper can't eat multiple Rumble Balls back to back within 6 hours or otherwise he'll lose control of his transformations.


 * Monster: It seems that the consumption of three Rumble Balls in under six hours created a new Point in which he is standing similar to Heavy Point, but possesses an oddly misshapen head and antlers, as well as an incredible (likely more than twenty feet, or about the size of an office building) increase in height and strength. Chopper's fur is lengthened in this form. Chopper also loses all consciousness and goes completely berserk in this form. Also, this form appears to be a combination of all of Chopper's transformations, not including Brain Point and Arm Point (Heavy Point stance, Walk Point speed, Horn Point horns, Jump Point legs, and Guard Point hair). Doctor Kureha told Chopper that after he consumed three Rumble Balls for the first time, he leveled an entire village on Drum Island while on this form. Kureha also commented on this form being that of a true monster; a danger to friend, foe, and even Chopper himself. According to Zoro's observation, this transformation appears to be lethal to Chopper, as the amount of energy needed to maintain the form is too much for his little body to handle. The only known way to end this form is by placing Chopper into the sea.

Other Abilities Chopper being the doctor of the crew, has a large knowledge of medicine and medical drugs as well as the preparation of remedies and ointments from regular fruits, roots and vegetables found on most islands. Most of this he learned during his apprenticeship under Dr. Hiruluk and Dr. Kureha. In addition to the transformational advantages that Chopper's Zoan forms afford him in battle, he has also been known to employ wrestling-type moves (i.e.pinning down an opponent,or smashing them to the ground by means of a supplex) from time to time. His extensive knowledge of the bipedal anatomy also proved useful when the Straw Hats were trying to bring down Oz, during which time, Chopper formulated several theories on where it was best to target the colossal adversary. And while naive, he can be quie as strategist, as seen on his fights against the Mr. 4 pair and Gedatsu.

Chopper, who originally was an animal, is also capable of speaking to and understand other animals, which came in handy on various points of the story.

Past Story
Chopper was originally a reindeer with the slight oddity of a blue nose, which caused other reindeer to treat him as an outcast (always making him follow the herd from far back). However, when the young reindeer ate the Hito Hito no Mi, he was even more ostracized from his herd (and with the increase in intelligence granted by the fruit, now acutely aware of it) and struck out on his own. Unfortunately for Chopper, his attempts at communicating with the humans on Drum Island proved disastrous, he was shot by villagers who mistook him for the Abominable Snowman. Luckily, though, he was rescued by the quack Dr. Hiruluk (Hiriluk in the English version), who named him and took him in as his friend and 'assistant.' Although his deeds were of dubious medical value, Dr. Hiruluk became Chopper's role-model. Hiruluk taught Chopper his philosophy on life (that all diseases could be cured) and his strong faith in the Jolly Roger as a symbol of strength against all odds. The two went from house to house, administering their "cures" in a country where all doctors not sanctioned by King Wapol were banned.

When Hiruluk's health took a turn for the worse, Chopper found himself left out in the cold once again as the old man didn't want Chopper to watch him die. But once Chopper found out what was going on, he was determined to find something to cure his mentor, his one and only friend. He soon found what he was looking for: a special kind of mushroom with skull-and-crossbones prominently displayed in the medical book, unaware of what that sign really meant due to Hiruluk's praising of pirates. Remembering what he overheard by some villagers that a "certain" type of mushroom can heal every illness, Chopper steals Hiruluk's favorite medical book to find the miracle mushroom. Chopper's arduous journey was a success, even though he risked his life and suffered many injuries, such as a broken left horn.

Hiruluk overwhelmed with tears of gratitude, ate the mushroom to show his love and appreciation to Chopper, but Chopper would later find out from Dr. Kureha that he had given Dr. Hiruluk a fatal dose of poison. But Hiruluk was not to live much longer anyway. Declaring that he had a wonderful life (in the english dub he declares he is a doctor), he committed suicide by blowing himself up outside of Drum Castle (before being killed by the poison, for Chopper's sake). As for Hiruluk's last wish, Dr. Kureha (the last remaining doctor not owned by King Wapol) took Chopper in and taught him 'real' medicine for the next 6 years. Chopper worked as hard as he could, in order to become a doctor like his idol, Hiruluk.

Present Story
However, Chopper's isolated life in Drum Castle (which he and Dr. Kureha annexed after King Wapol fled) would one day come to an end with the arrival of Monkey D. Luffy and his pirate crew. Chopper, naturally distrustful of humans, was not pleased, especially given Luffy and Sanji's desire to cook and eat him. But when Chopper showed both his medical powers and his skills in battle against the returned forces of King Wapol, Luffy offered (forced) him the (as-yet unfilled) position of Ship's Doctor in his crew. While Chopper was at first unwilling to leave, he remembered Dr. Hiruluk wishing Chopper to sail seas to see the world on his own and with his desire to broaden his medical horizons, he decides to join Luffy and his crew. Fleeing the castle with the Straw Hat Pirates, Chopper was given a send-off of gigantic proportions: Kureha had turned the snow into sakura blossoms, the very same that Hiruluk had researched over 30 years that would one day, cure the people of Drum of their "sickness of the heart," passed to Dr. Kureha as one of his last request before death. Overcome with tears, Chopper made a fond farewell to his birthplace and mentors, setting out to sea for the first time in his life.

Chopper was originally abandoned by his family for being different, and being with humans was the same. Chopper's first friends (other than the people who raised him) were the Straw Hats, which opened him up to the world.

Enies Lobby
In the team battle against CP9, Chopper received the most dire injuries in the Strawhat crew (excluding Luffy) and almost died in his subsequent battle with Kumadori and was forced into his "Monster" Point as a result which rapidly cut away at his life force. Franky managed to shoot Chopper into the sea to negate his Devil Fruit powers, but after Chopper was rescued, he was immobilized and unable to fight in the battle against the Marines. With the help of the Going Merry, everyone managed to escape Enies Lobby safely (while painfully pulling Zoro's legs to get him to apologize to Robin). However, after escaping, Iceburg arrives in a Galley-La just in time to pick up the Straw Hat Pirates as the Merry suddenly breaks apart. Luffy then gives the Going Merry a viking funeral by burning the ship as the crew tearfully says goodbye.

Currently, Chopper received his first bounty of 50, and the only reason he got it is due to the fact that he is a "pet" of the Straw Hats. This possibly gave him the smallest active bounty of all time. Chopper is shocked that his bounty is so small, since he believed he fought like a man.

When Garp attacks and Usopp tries to rejoin, Chopper was the only one who didn't deny his attention.

Adventure on Ghost Island
After sailing for some time on the Thousand Sunny, Chopper and the rest of the crew came across a mysterious barrel floating on the ocean. Upon opening it, a flash shot up from it. After braving a storm that mysteriously came afterwards thanks to Nami and Franky,Chopper and the rest of the crew found themselves in the presence of a ghost ship.

This ship apparently belonged to a skeleton named Brook who through by chance initially accepted Luffy's offer to join the crew. Chopper along with Usopp were exceptionally afraid of the skeleton. Just as Brook was about to perform before Usopp and the rest of the crew after dinner, a ghost appeared, and a clanking noise was heard. These sounds were caused by the gates of the island that suddenly appeared, Thriller Bark, closing. This prompted Brook to head to the island before Chopper and the rest of the Straw Hats' eyes.

With Luffy's resolve to go to the island, Chopper couldn't do anything about it. With Usopp and Nami, he set out in the new 'mini-merry' ship to explore Thriller Bark. There, the three met the Cerberus, which chased them until they hid in a tree. Here the three met Hildon who decided to take them to met Dr. Hogback. This pleased Chopper as the doctor was renowned in the medical world.

After riding a carriage with Hildon through some woods filled with all sorts of stitched-up creatures, Chopper and his companions were left in the middle of a cemetery. There, they were attacked by some Zombies,and escaped into Hogback's mansion and met with the good doctor and his maid, Cindry. Over dinner, Chopper asked for the doctor's autograph and a chance to visit his laboratory. The former request was given to Chopper but the latter was not.

After dinner with the good doctor in which the three asked about Brook, Nami decided to take a bath. For this, Chopper and Usopp were put in charge of guarding her from intruders from the outside. In the middle of the bath however, Nami was attacked by an invisible thing. Luckily, Usopp came in the bathroom and drove it away. Later after the incident in the bathroom, Chopper and his companions found out that the paintings and taxidermy in the dining room were all Zombies. Fortunately, the three escaped through a secret door before the Zombies could catch them. Beyond the secret door, Chopper and his companions found themselves in a room filled with Cindry's pictures. Through a newspaper article that Nami found, the three learned that Cindry was an actress that died ten years ago. Just as they were about to leave, the three stumbled across a treasure chest. Inside however, was a horrific Jack in a box that frightened the three out of the room.

As the three were running through the hallways of the mansion from more painting Zombies, a mysterious bodyguard decided to chase them.

Eventually, Chopper along with Ussop and Nami hide inside the stuffed body of Kumacy to overhear Moria's plan for creating Oz- the strongest zombie. Eventually the trio are discovered and make a run for it, but are surrounded and attacked by a large group of Zombies. During the battle, Nami is captured by Absalom. Franky and Robin arrive just in time to finish off the zombies. After that the crew makes its way back to the Thousand Sunny where they find Luffy, Zoro and Sanji. After explaining the situation to them Luffy orders the Strawhats to prepare for a counterattack on Thriller Bark.

Chopper's Disgust Of A Mad Scientist and the Special Zombie's Rampage
With Robin, Chopper attacked Hogback in his laboratory, but found him protected by Jigorou, Inuppe, and Cindry. Chopper and Robin fight them, but are eventually forced into submission. Chopper announces his disgust and defiance by declaring Hogback is no longer a doctor to him. He explains that when Hogback told him he was using the zombies to investigate the difference between life and death, he admired him because he could help those who lost loved ones when death occurred, but when he found out his role in the zombies' resurrection, he was disgusted that he would go as far as to use them for personal benefit instead medical science, and is forcefully moving them despite their hearts not beating, making them puppets. This, Chopper explained is why he cannot accept the zombies as living creatures, and Hogback as a doctor. Hogback laughed and insulted Chopper's ideals, declaring he brought new life to the zombies and they should be grateful for "reviving" them. He demonstrated their proof of being "alive" by kicking Victoria Cindry in the face and ordering her to lick the ground. He explained that the room that Chopper went into earlier was his room, and told him how he disappeared, and the truth behind Victoria Cindry and her death. He explained that because of his medical genius, many flocked to him with the hopes he could help them or their loved ones. Eventually, he couldn't be bothered with, and explained it was only for the money. Then, a beautiful and innfamous entertainer named Victoria Cindry became one of Hogback's patients. Hogback, like many other men, was smitten by her beauty and fell in love with her, but she told him she was already engaged. However, it was nothing compared to his eventual heartbreak when he found out Cindry lost her life when she fell from stage. A depressed Hogback left his job and disappeared from public knowledge, but was discovered by Gecko Moria and became in his servitude in the promise that Cindry be brought to life. Eventually, he stole Cindry's corpse and medical surgery and with Gecko Moria's Kage Kage no Mi ability, Cindry was brought back to life as a Zombie. Hogback declared although Cindry had a different personality, he cared only for her beauty and said she is and should be thankful for her resurrection, and thus ordered her to attack Chopper. While Chopper refused to attack her, and merely restraining her, as she continued to assault hom. Chopper pleaded to Cindry to stop and look at what she's become. While she calms down, Chopper asks to Robin to use her powers and feed her salt. However, she was prevented from doing so by Jigorou and Inuppe under Hogback's orders. Later, it soon became apparent that the two zombies couldn't get along and began to fight each other, just like Zoro and Sanji so Robin took advantage of Hogback's orders by forcefully closing his mouth, asking him to order herself and Chopper to "jump off the tower". When Robin released Hogback, he indeed did give this order, but it was mistakenly given to Jigorou and Inuppe and they followed suit. Chopper decided to pummel Hogback, as the mad scientist desperately gave orders to Cindry to buy her time, but she miraculously started crying, and said she couldn't move. Just as the battle is turning in the Strawhat's favour, with Chopper with Robin's help about to deliver the final move on Hogback, Oz however, demolished the wall and interrupts the fight. As Hogback pleads for Cindry's help, she simply smiles, implying her soul temporarily returned to her, and leaves him and herself to their fate. Oz's rampage apparently leads him to crush both Hogback and Cindry.

Battle Against A Zombie Giant Among Giants
Chopper is now joining the crew's battle against Oz, and although the battle is completely drastic, it becomes increaingly desperate when Gecko Moria uses his Kage Kage no Mi ability to manipulate Oz's body, giving him an ability to strech like his counterpart, Luffy. Despite to Oz's immunity to pain, Chopper discover that his weak spot is his left arm. It was discovered that Oz suffered a severe case of frostbite, due to wandering the Frozen Continent with very little on. Chopper, Sanji and Zoro made continued attacks towards Oz's left arm, taking advantage of Oz's inability to feel pain, and giving his left arm considerable damage (though not initially noticed by Oz), however Chopper along with Sanji was knocked out for these efforts. With the Straw Hats falling one by one, Luffy returns to save Nami and Usopp and with 100 shadows in him in him, Luffy strength multiplied several times over becoming "Nightmare Luffy" and proceeded to pummeling the zombie giant, beating him severely, with Moria himself caught in the attack, before powering down.

Down, but far from out, Oz gets up to do battle again. Fortunately, Nightmare Luffy's attack was more than enough time for the Straw Hats to recover. Luffy himself suprisingly gets up despite having the exhausting process of 100 shadows in his body for ten minutes. Chopper concocts a plan to force Oz's back straightened to take the full force of Luffy's attack. With his arm broken, Oz can't counter as Luffy activates Gear Third smashing a Gomu Gomu no Gigant Bazooka to his face, breaking Oz's back.

The End of Thriller Bark, Another Shichibukai and a Skeleton Nakama
However, Moria returns to consciousness, and uses his ultimate technique Shadows Asgard, taking all shadows in Thriller Bark, numbering to 1000 to finish off the Straw Hats once and for all. However, as Chopper witnessed, Luffy activated both Gear Second and Gear Third at the same time, and finally defeated Gecko Moria, releasing all the shadows. Nami then remembers Kuma is on this island and tells everyone. Meanwhile, Kuma reports that Moria has failed to kill Luffy and is badly wounded, he is ordered to kill everyone on Thriller Bark and evacuate the wounded Moria. However, instead of outright killing everyone as his orders said he offers everyone a deal- let him kill Luffy (who cannot fight back now) and he'll leave everyone alone. The Straw Hats and everyone else on the island tell Kuma no way and he sets off a bomb made out of air that knocks everybody unconscious. However, before he can finish off Luffy, Zoro rises again and vows he won't let Kuma touch him, Kuma offers to just kill Zoro then and attacks him, though Zoro survives. Kuma then leaves, praising Luffy for having such good friends.

Soon after, Chopper joins everyone in a celebratory party at Thriller Bark (save for Zoro, who is still recovering from his wounds) lead by Brook and his piano. Luffy finally reveals to Brook that he is friends with his Nekama, Laboon. Brook stops partying, cries, and reveals a Tone Dial which has the last song the Rumba Pirates ever performed together on it. Brook states that since he has new friends in Luffy and the others, he no longer needs the Dial and will give it to Laboon the next time they meet. Brook then asks if the Straw Hat crew invite is still good and Luffy says it is, Chopper joins the others in a shocked response.

Current events (spoilers)
After leaving Thriller Bark, Chopper assisted the other Straw Hats on their continued journey. He helped fight the Flying Fish Riders alongside the crew. Afterwards, he arrived in the Sabaody Archipelago, where he joined in the initial group heading out on the island. He was treated to cotton candy by barmaid Shakuyaku and eventually dozed off alongside Brook after trying and failing to find the assisting Camie. Usopp later found him and Brook was berated for relaxing instead of looking for Camie, and they were quickly taken taken aboard a Flying Fish with the Rosy Life Riders. After they enter there, Camie had already been sold to Tenryuubito Carlos Sei in an extravagant bid of 500,000,000. However, Luffy's Flying Fish burst in, and he quickly got off to rescue Camie. In former enemy Hatchan's attempt to restrain him, he inadvertently revealed he's a Fishman and is shot by Carlos Sei. An enraged Luffy responded by punching him in the face, and starting an incident attracting several Marines to the Human Auctioning House. Luffy, along with the crews of two of the Eleven Supernovas, Eustass Kid and Trafalgar Law cleared the incoming masses of Marines, Chopper assisted them in battle, until he as well as the rest of the Straw Hats with the help of Duval's Rosy Life Riders, managed to escape.

Chopper heard Rayleigh's story with the others, but shortly after leaving, he and the others were confronted by a Pacifista. Chopper's Roseo Meitel attack did very little damage to the weapon's defenses,but the group managed to defeat it by combining their efforts. Unfortunately, they were soon confronted by a second Pacifista and Sentoumaru, Dr. Vegapunk's bodyguard. Luffy ordered the crew to split up, and Chopper went with Luffy and Robin. Sentoumaru intercepted Luffy and managed to wound him with unarmed attacks despite him being made of rubber. Seeing his companions defeated, Chopper became desperate and used a Rumble Ball- as he had used one against the marines outside the Human Auctioning House and another against the Pacifista, it transformed him into Monster Chopper. Monster Chopper then began attacking Sentoumaru as Robin fled with Luffy.

Major Battles

 * Chopper vs. Chessmarimo
 * Chopper and Usopp vs. Mr. 4 Team (Mr. 4, Miss Merry Christmas, Lasso)
 * Chopper vs. Gedatsu
 * Chopper vs. Ohm
 * Chopper, Luffy, Zoro, and Sanji vs. Franky Family
 * Chopper vs. Kumadori
 * Chopper and Robin vs. Dr. Hogback and Victoria Cindry
 * Chopper, Zoro, Usopp, Sanji, Robin, and Franky vs. Oz
 * Chopper, Zoro, Nami, Usopp, Sanji, Robin, Franky, and Brook vs. Oz and Gecko Moria
 * Chopper, Luffy, Zoro, Nami, Usopp, Sanji, Robin, Franky, and Brook vs. Oz
 * Chopper, Luffy, Zoro, Nami, Usopp, Sanji, Robin, Franky, and Brook vs. Flying Fish Riders
 * Chopper, Luffy, Zoro, Nami, Usopp, Sanji, Robin, Franky, and Brook vs. PX-4
 * Chopper, Luffy, and Robin vs. Sentoumaru

Filler Battles

 * Chopper and Sanji vs. Whetton
 * Chopper and Nami vs. Touma
 * Chopper vs. Hockera

Translations and Dub Issues
The name "Tony Tony Chopper" is partly a play on "Tonakai" ("Reindeer"), and partly on the idea that his horns look like they could chop down trees.

In the 4Kids english dub, his attack names are changed, and his forms are named "Boosts" instead of "Points". He speaks in a deep, gruff voice when in Heavy Boost, Arm Boost, Jumping Boost or Horn Boost, while Chopper's voice did not change.

In the 4Kids Dub and Viz Manga, Nefertari Vivi merely calls him "Chopper" rather than his nickname, "Tony-kun." She calls him "Tony" in the English version of the eighth movie.

Cameos and Crossovers

 * Chopper appeared in an Shonen Jump special, where Enel attacks Tokyo and Odaiba.
 * Chopper and other characters also appeared in Cross Epoch.
 * Chopper has appeared in the games Jump Super Stars and Jump Ultimate Stars for the DS. He also appeared in Battle Stadium D.O.N on the GameCube and PlayStation 2.

Merchandise
As a main character, Chopper has been the choice character in many forms of merchandise. Chopper can be regarded as somewhat a mascot of One Piece, he features in more fan merchandise then Luffy. Due to his size in comparison to other crew members, Chopper is often released alongside another crew member (usually Usopp) in a joint figure. His most common form is as a plushie such as the One Piece Fishing Plushies pair or Chopper XMAS Plush pair.

He has been featured in the series of models Portrait of Pirates, alongside Usopp. He was issued alongside Hiluluk in a One Piece Block Figures set featuring the Straw Hats and their past mentors/loved ones. He has featured in trading figure sets such as One-Piece Motion Figure box alongside Buggy and the One Piece Styling Figures alongside Usopp. When the Wii game One Piece: Unlimited Adventure was released Chopper was one of the crew produced as a figure in the One Piece Locations Trading Figures series.

He featured in the second wave of the One Piece VS Figure Gashapon series. Another Gashapon set he featured in was the One Piece Full Color R Gashapon, of what he was featured twice. He is part of the One Piece Sky Island Mascot Keychain collection. He also featured alongside Carue in the One Piece Desert Kingdom Mascot Keychain/Cellphone Strap collection. He featured in the One Piece Monkey Island Mascot Keychain series alongside Usopp, however in the One Piece Monkey Island Mascot Cellphone strap version he featured alongside Mashira.

Songs

 * Rumble Ball
 * Dakishimete
 * Doctor Tony Tony Chopper (with Luffy)
 * Present
 * Twinkle Twinkle
 * Chopperman's Song
 * Family (with other crew members)
 * We Are! (with other crew members)
 * Utae! Jingle Bell (with other crew members)
 * You Are the One (with other crew members)
 * Jungle Fever (with other crew members)
 * Friends (with Usopp)

Trivia

 * Chopper has his own Jolly Roger, as the other members of the crew do. It is a little smilie skull with his antlers, hat, and signature blue nose. Prior to it's revelation in chapter 507, the Jolly Roger that symbolized his was the one used by his adoptive father Hiriluk. This is commonly used in merchandise purposes such as key chains.
 * Chopper is described as being like the youngest son of a family.
 * Chopper's favourite foods are Cotton candy, chocolate and other sweet stuff.
 * Chopper's is one of the few characters in One Piece whose design origins has a clear link, namely to the character Rudolph the Red-Nosed Reindeer as Chopper not only is a reindeer, but one with an unusually coloured nose. Chopper's birthday, Christmas Eve, further leads to this conclusion.


 * A fan noticed in the panel wherein Chopper meets Holy, that Chopper's antlers were connected to his hat rather than his head. Wondering how this is possible, the fan sent a letter to Oda asking about it. Having received several letters like it, Oda replied to the fan and the others asking the same question, that they shouldn't take the scene too literally. It is simply Chopper expressing shock similar to how other characters express shock with their eyes popping out.

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