Marvel Comics is guilty of this, as most of its heroes reside in New York, the city where the company's headquartered.
- The Avengers, Fantastic Four, Spider-Man, Daredevil, The Punisher, etc. all hail in/from the Big Apple, and the X-Men live in nearby Westchester County. This is occasionally lampshaded by civilians, villains, and heroes in the universe. Even Wolverine, who is from Canada and will kill you if you insult it, spends most of his time in the US. When the character started to get popular, several attempts were made to retcon him into actually being American. Fortunately, none of these stuck.
- One of their (once) most popular titles, Excalibur, followed the national super-team of the UK. The X-Men lived in Australia for several years, too, but Excalibur was created by writer Chris Claremont, who was born in Britain, and British artist Alan Davis. And the team in its original form consisted of two Britons, two Americans and a German.
- This was lampshaded during the Decimation event when Henry Peter Gyrich remarked how, now that there are no mutants around any more, the US wins the superpower race by default since statistically, "happy accidents" (like the Fantastic Four or The Hulk) and scientific advancements (like Captain America) that lead to meta-humans being created occur more frequently in the US than anywhere else in the world.
- Another exception: Alpha Flight, but that was created by Canadian artist and writer John Byrne.
- Yet another: The Runaways' bases are in Southern California. In fact, besides Cloak and Dagger, none of the other heroes show up in the comic unless they're in New York themselves or they're being apprehended by The Avengers.
- Both Marvel and DC actually do assume that there are superhumans living all over the globe - in fact, both have had crossovers or miniseries that existed simply to introduce a lot of global heroes who were treated as characters that had always been there, you just never saw them before - it's just brought up infrequently, so every now and then a completely unnecessary lampshade gets hung on it by a writer who doesn't realize that there are lots of characters they've never heard of and lots of writers before them who had the same idea.
- Wolverine and the rest of the characters introduced in Giant Size X-Men #1 were intentionally designed to be a new group of mutants from around the world... they all just got recruited to go live in Westchester.
- This was lampshaded during the Civil War arc: at the height of the conflict, the Canadian characters in Alpha Flight were mocking all the angst going on among the American superheroes concerning the Registration Act by pointing out that other nations (including Canada) had something equivalent in place for years without having had either opponents, supporters, or the governments in question go as insane over the issue as the Americans currently were.
- Banshee was even a member of "Mutants Without Borders", a charity organization that helps mutants in the third world. Of course, it was owned and run by the American X-Man Archangel.
- This whole situation was lampshaded in Mighty Avengers. The Blue Marvel is a black superhero from America who divides his time between the Avengers and helping out various other superheroes across the globe, with the Running Gag being that whenever he mentions any of his non-American hero comrades, none of the Avengers have even the slightest idea of who the hell he is talking about.
- The Vision takes place almost entirely in a suburb of Washington, D.C., despite Vision working for the New York-based Avengers, because writer Tom King lives and works in Washington.
- The Squadron Supreme limited series takes place on an Earth suffering from near-total collapse, yet the entire story takes place in the United States. This is especially jarring given that much of the story focuses on how the Squadron's efforts are impacting the rights of individuals, yet the laws and traditions of different countries are never addressed.
