He had clearly been mutated by the terrible radiations of atomic weaponry — what with his wizened yellow body, slanting eyes peering from behind coke-bottle lenses, and the chubby cheeks and buck teeth of a bunny from Hell.There is an unfortunate teeth trope in the early and even mid 20th century in which people of East Asian descent are drawn with buck teeth. Buck teeth (two middle incisors sticking out of the mouth) are the teeth stereotype most common to Chinese and most other people of East Asian descent (and also Native Americans to a lesser extent). The teeth stereotype most common to Japanese people, however, is either horselike teeth or misaligned teeth (rather like the British Teeth stereotype) that often stick out of the mouth. Both teeth stereotypes are discredited. World War II depictions of the Japanese typically involved either buckteeth, horselike teeth, misaligned teeth rather like British Teeth, or fangs (not Cute Little Fangs, but grotesque Fangs Are Evil), often with overbites. Part of the inspiration for this trope is that Hideki Tojo, the de facto leader of Imperial Japan during WWII, had pronounced buck teeth… and very rotten ones when he was captured by the Americans, after which a dentist put "Remember Pearl Harbor" on his new dentures. This is often a component of Yellow Face. Subtrope of Facial Profiling. Compare with British Teeth.
— Plan 7 of 9 from Outer Space
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- Many depictions of Japanese in World War II U.S. comics had this feature. An example from SuperDickery.
- An old Archie comic drawn by Dan De Carlo had an example of this.
- All Asians in Mortadelo y Filemón, even in the latest releases.
- From the very first Tintin, the two Chinese torturers have teeth like this.
- Mitsuhirato, a villainous Japanese businessman in China, is drawn with stereotypically buck teeth, notable in a comic that was very progressive for its time in terms of racial attitudes (well, not counting the first book). Understandable in that at the time the character was written, Japan was currently engaged in a very brutal occupation of China, and Hergé made his views abundantly clear.
- A much more sympathetic Japanese policeman, Bunji Kuraki, does appear in a "The Crab With The Golden Claws", however, who is drawn normally.
- Lucky Luke: the Chinese launderer has teeth like this, as do many others. The leader of the Triads in Rantanplan's Heritage does not, however.
- Dan's cousin Chin-Kee from American Born Chinese looks like a bad Chinese stereotype, complete with buck teeth. He is drawn with this trait as part of his "embodiment of every negative Chinese stereotype ever." As part of his ongoing ruination of every relationship in Danny's life, the other kids start to think Danny's got buck teeth too. Turns out the reason he's so goofy-looking is because he's actually a badly made human disguise worn by Sun Wu Kong, the Monkey King.
- Detective Yashimoto, from Cybersix and his little sister have very prominent teeth, though apart from this they're not portrayed very stereotypically. Interestingly their character designs from the comic were kept for the Cult Classic animated series, despite the series being animated in Japan.
- Mickey Rooney in his Yellowface portrayal of Mr. Yunioshi in Breakfast at Tiffany's has misaligned buck teeth.
- Once Upon a Time in China includes a bizarre Chinese example in the character of Buck-Teeth-Soo, the Americanized member of the cast. It's downplayed, though, compared to most of these examples.
- Comes up in some World War II era Three Stooges shorts, with the Japanese characters being played by actual Japanese POWs, wearing fake teeth.
- One character in the Wild Cards series was a joker whose virus-induced deformities made him a real-life version of a cartoon Asian, including big buck teeth.
Live Action TV
- Fire Emblem Awakening puts a fantastic spin on this, with Panne the Taguel (aka person with rabbit features that can turn into a literal Killer Rabbit) mentioning that humans seem more comfortable around her when she pretends to have buck teeth. Note that Panne seems to hail from the world's Europe analogue, though, rather than its Asia-analogue.
- Possible contributing factor to the racewank early in Homestuck fandom; John and Jade have buck teeth and are sometimes portrayed as Asian in fanworks. The artstyle is such that it's impossible to tell what, if any, race they were intended to be and since they were effectively cloned from nothing instead of being born, nothing says they actually have to fit into any recognisable racial category. The wank seems to have mostly died out by now, though.
- Krusty does it on The Simpsons when he goes back to stand-up comedy, showing how out-of-touch he is. 
- In the old Disney short Der Fuehrer's Face, the caricature of Hirohito looks like this.
- Joe Jitsu from The Dick Tracy Show has buck teeth.
- Si and Am the two Siamese from Lady and the Tramp have buck teeth when their mouths are closed and Cute Little Fangs when their mouths are open. (Interestingly, however, their slitted eyes are blue, which is Truth in Television for actual Siamese cats.)
- In The Aristocats, Shun Gon the Siamese cat (a.k.a. the Chinese Cat) has buck teeth.
- Many early Looney Tunes shorts used this for Japanese and other East Asian stereotypes. Especially the war time cartoons Tokio Jokio, Bugs Bunny Nips the Nips and The Ducktators.
- This turned up in the Fleischer's Superman Cartoons episode "Japoteurs" with Superman foiling some bad Japanese stereotypes from sabotaging American War Effort.
- Charlie from Mr. Magoo has buck teeth.
- South Park sometimes features East Asian people with buck teeth, like the kid, Junichi in the "Jewbilee" episode.
- One episode of Family Guy makes Quagmire fall into this trope.
"Hello, I like many sex. Goodbye!"
- The Beatles' cartoon series fell into this trope when ever Japanese characters were featured, among the many other unfortunate stereotypes of the time.
- This is basically a recurring feature with most animated Nickelodeon protagonists.
- Very common in World War II anti-Japanese Allied propaganda. Even Dr. Seuss got into the act◊.
- In his biography General Bill Slim mentions how he got hold of a picture of the Japanese general opposing him. He noted that Lieutenant General Kawabe looked like a propaganda caricature with his bullet head, thick glasses and buck teeth — so Slim comforted himself with the thought that, no matter which one of them was the better general, at least he was better looking.
- A lot of Roger Shimomura's artwork features Japanese caricatures that have either buck teeth or misaligned teeth, or at least have yellow skin like many of The Simpsons characters.
- The main character in Chibi Kiiro Jappu (Little Yellow Jap in English), a parody of The Story Of Little Black Sambo, has two buck teeth sticking out of his mouth.
- The horse teeth variant actually existed with some Visual Kei artists until The New Tens or so, though it's a subversion - it wasn't due to their race or ethnicity at all, it was due to cosmetic dentistry (especially implant dentistry) not being half as advanced in The '90s and The Noughties, so an artist who was self-conscious over bad teeth had two choices – very large, prominent, and somewhat obvious horse teeth or leaving uncared-for/discolored from tobacco or other drug use/otherwise undesirable teeth the way they were. Quite a few artists that had the money for cosmetic constructive dentistry often opted for the former, getting a result that, as technology improved, became very obvious.