Tony Tony Chopper/Misc.

Early One Piece
In One Piece Green: Secret Pieces was revealed an early concept of Chopper.

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." This carried over to the Viz Manga and edited FUNimation dub, though they retain their names in later chapters of the Viz Manga and the uncut dub. He speaks in a deep, gruff voice when in Heavy Boost, Arm Boost, Jumping Boost or Horn Boost, while his voice in his original, Brain Boost, and Guard Boost forms did not change (though they were slightly deeper then usual). Another change in the 4Kids dub is when someone compliments him, he doesn't insult the person and instead just says that he wants to dance.

In the Viz Manga and 4Kids dub, Nefertari Vivi merely calls him "Chopper" rather than his nickname, "Tony-kun." She calls him "Tony" in the FUNimation dub.

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.
 * In episode 6 of Bokusatsu Tenshi Dokuro-chan, Sakura says that he is afraid of various things, including "reindeer that are doctors!" An off-brand Chopper with a creepy smile and an O on his hat instead of the original X then appears from behind a tree.
 * In Episode 12 of Mayoi Neko Overrun his cosplay figure appears on a girl.

Cultural References

 * Ji Hoo, from the 2009 Korean drama Boys Over Flowers, is seen wearing a Chopper hat when he was visiting Macau.

Anime and Manga Differences
Chopper's adventure in Torino Kingdom is extended in the anime. In the anime, Chopper was wandering around the island right after falling from the giant birds' nest. A native snuck up on Chopper and knock him out. Chopper woke up to see that he is tied up and about to become the natives' dinner, but managed to break free from his bonds when a couple of giant birds attacked the natives. Some time later, Chopper meets a baby bird with injured legs. Chopper then tends to the bird's injuries. While the baby bird is recovering, Chopper makes the bird promise that when she learns to fly, she will take Chopper back to the Sabaody Archipelago. While wandering in the forest, the baby bird and Chopper are attacked by the natives. They are soon saved by the giant birds. The baby bird's mother then send Chopper rolling down a hill and carry the baby bird back to its nest. Chopper reminds the baby bird about the promise and then thinks about how long will it takes for the bird to learn how to fly.

Filler Battles

 * Chopper and Sanji vs. Whetton
 * Chopper and Nami vs. Toma
 * Chopper vs. Hockera
 * Chopper and Luffy vs. Musshuru

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 than 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)
 * Sea Moon See You (Ikue Otani)

Trivia

 * 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 Hiriluk 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.
 * A fan noticed in the panel where 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.
 * Chopper is described as being like the youngest son of a family.
 * Chopper's favorite foods are cotton candy, chocolate and other sweet stuff.
 * In Japanese Fan Polls, Chopper has so far consistently been voted the fourth most popular character in One Piece, making him the most popular animal in the series. Chopper Man, his superhero alter-ego, was voted the 83rd popular character in the 4th poll.
 * 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 colored nose. Chopper's birthday, Christmas Eve, further leads to this conclusion. A song entitled "Chopper the Blue-nosed Reindeer" has also been produced for the character and was sung by the Japanese voice acting cast at the Weekly Shonen Jump magazines annual event the Jump Festa 2007 and once again during the 2008 festa. In the beginning of the Drum Island arc, when a character was describing how Dr Kureha would come down from the top of the mountain, a silhouette of Chopper in his original reindeer form was pulling her down on a sled in the sky, greatly resembling that of Santa Claus, plus Dr. Hiriluk would sometimes enter peoples houses from the chimney.
 * If One Piece were set in the real world, Chopper would be from Canada.
 * Throughout the series, Chopper has often questioned or has been questioned as to what he is (man, reindeer, tanuki, gorilla, etc). In Chapter 595, Chopper finally starts accepting he is possibly a "monster." This is an iconic question raised by characters in science fiction and fantasy for various reasons, such as physical and/or mental experimentation. It is usually is a reference to whether or not the character belongs with human-kind after all that has happened to them.
 * The way Chopper transforms into a monster resembles the novel"Strange Case of Dr. Jekyll and Mr. Hyde".
 * In Chopper's three original Zoan forms, each one has a unique stepping sound.
 * Chopper hides a drawn picture of Dr. Hiluluk's pirate flag under his hat.
 * In an SBS, when asked which flower Chopper resembles the most, Robin's Voice Actress replied he most resembles a tulip.