The original Global Guardians in The DCU were a mish-mash of National Stereotypes: The Knight from the U.K., Rising Sun from Japan, Tuatara from New Zealand, and so on. They got less token-ish as time went on. They made their debut in the comic adaptation of Superfriends; subtlety clearly wasn't a concern.
Justice League of America had a team in Europe and an international team at one time. Over the years, there have been numerous characters that have joined the team. Even in its classic "Big Seven" incarnation, you can expect onlythreeAmericans. The rest are twoaliensan Amazon and an Atlantean.
Justice League International was a U.N.-sponsored iteration of the famous superhero team. Most of its members were American, but Rocket Red and Captain Atom officially represented the U.S.S.R. and U.S.A. respectively, with a number of other international members as well: Fire (Brazil), Ice (Norway), Doctor Light (Japan), Crimson Fox (France), Tasmanian Devil (guess), etc.
Many of these members were taken from the pre-existing Global Guardians.
The DCnU version has Vixen (from Zambesi), August General in Iron (from China), and Godiva (from the U.K., and another former Global Guardian to boot) to the mix. And Booster Gold is now Canadian. Later additions include Batwing (Congolese) and OMAC (Cambodian)
The Club of Heroes (a.k.a. the Batmen of All Nations) from 1950s Batman comics (reintroduced in a 2008 story arc) was a loose group of non-powered heroes who were inspired by the Bat; their number included Batman (the United States), Man-of-Bats (also the United States; he was Sioux), the aforementioned Knight (Britain), the Ranger (Australia), the Gaucho (Argentina), Wingman (Sweden), the Musketeer (France), and the Legionary (Italy). The Knight, Ranger and Man-of-Bats also had Robinesque sidekicks: the Squire (who became the second Knight, and got his own Squire), the Scout (who became the Dark Ranger) and Little Raven (who became Raven Red).
Batman would later revisit the idea by creating Batman, Inc., featuring most of the above apart from the now-deceased Legionary, Ranger, and Wingman. New additions include the Hood (another representative of Britain), Mr. Unknown (Japan), and Nightrunner (France, replacing the retired Musketeer). There's also Batwing (Congolese), and a mysterious new Wingman (who turned out to be the American Jason Todd). Batman, Inc. might not seem like much of a team, but they operate independently and come together to tackle greater crises — like the Justice League.
When the team is revived during Batman (Joshua Williamson), they're joined by Bat-Man of China. And in the aftermath of Shadow War, Batman leaves Ghost-Maker (Singapore) in charge of the team. They're then joined by Clownhunter (Vietnamese-American) and Gray Wolf (Chechenya).
The ElseworldKingdom Come adds the Dragon (China), the Samurai (Japan) and the Cossack (Russia).
Green Arrow, at the time practically a same-company Captain Ersatz of Batman, had his own Club of Heroes. "The Costumed Archers of the World" included the Ace Archer (Japan), the Bowman of the Bush (Australia), the Phantom (France), the Bowman of Britain (Britain) and the Archer of Arabia (Saudi Arabia), in addition to the American Green Arrow.
Blackhawk from Quality Comics in the Golden Age, later acquired by DC. Two distinct versions of this international team of aviators exist, sometimes with slight differences within the versions.
The Blackhawk Squadron that existed between 1941 and 1983 consisted of: Blackhawk (aka, sometimes, Bart Hawk — Polish, American, or Polish-American, Depending on the Writer); André Blanc Dumont (France); Olaf Bjornson (Norway... or possibly Sweden); Chuck Wilson (USA, specifically Texas); Hans Hendrickson (Netherlands); Stanislaus (Poland); Chop-Chop (aka Liu Huang or Wu Cheng, China); Zinda "Lady Blackhawk" Blake (USA).
In a 1987 miniseries, Howard Chaykin introduced an updated, slightly different, version of the team, which carried over into a subsequent ongoing series. These Blackhawks included: Janos "Blackhawk" Prohaska and Stanislaus Drozdowski (Poland); André Blanc-Dumont (France); Olaf Friedriksen (Denmark); Carlo "Chuck" Sirianni (Italy by way of the United States); Ritter Hendricksen (Netherlands); Weng "Chop-Chop" Chan (China); Natalie "the other Lady Blackhawk" Reed, and Grover Baines (the United States); Quan Chee Keng (Malaysia); and Paco Herrera (Mexico).
Present-day continuity seems to have reverted to some variation of the original team, Depending on the Writer.
The modern incarnation of the team seemed to follow suit to some degree; the nationalities of Andrew "Blackhawk" Lincoln, Lady Blackhawk, and Randall Wildman were never revealed (though Lincoln is likely American), but Kunoichi is Japanese, Canada is American (Nicknamed after an incident in a bar in Calgary), the Irishman is Ukranian (but born to American parents; he got his nickname from fellow Spetsnaz operatives due to his red hair), and Attila is Hungarian.
The Apollo Eleven from Astro City were a team of astronauts from around the world sent to man the first moonbase; something up there changed them into superhumans and they came back with an eleventh person.
The Suicide Squad has included at various points Captain Boomerang (both of them; Australian), Stalnoivolk (Russian), Ravan and Rustam (Quraci), Plastique (Quebecoise), Count Vertigo (Vlativan), Manchester Black and the Shade (English), Javelin (German), Mirror Master (Scottish), and virtually everyone else is American.
Jack Kirby's Boy Commandos: Dan "Brooklyn" Turpin (US), Alfie Twigett (UK), André Chavard (France) and Jan Haasan (Netherlands).
Their Golden Age distaff counterparts, Harvey's Girl Commandos, consisted of Pat Parker (American), Ellen Billings and Penny Kirt (British), Tanya (from the Soviet Union) and Mei-Ling (Chinese).
Due to being reincarnated into people from across the globe, the Knights of the Round Table from Camelot 3000 were this in effect: King Arthur, Tom Prentice, and (presumably) Merlin are all English, Sir Lancelot is French, Queen Guinevere and Sir Kay are American, Sir Galahad is Japanese, Sir Perceval is Australian, Sir Gawain is South African, and Sir Tristan is Canadian.
Wonder Woman (1987): The UN delegation to Themyscira in "Strangers in Paradise" consists of twelve people from wildly different backgrounds. However, since the arc is only five issues long, only a few of them (Blind Black Guy Rovo, troubled Tiananmen survivor Lin Koo, and the all-American Lois Lane) get anything besides token roles in the plot.
The version of The Authority backed by the G7 featured members from each of the world's seven richest nations: The Colonel from Britain, Street from the United States, Teuton from Germany, Rush from Canada, Last Call from Italy, the Surgeon from France, and Machine from Japan.
The Authority themselves were originally led by a Briton and included a Tibetan (Swift) and a Netherlander (The Doctor) along with whatever nationality Apollo and Midnighter possessed before losing their original identities, and the second Doctor was a Palestinian.
The titular team in The Boys: the leader and the viewpoint character are British, and there's also a Frenchman and two Americans.
The League of Ancients in the JLA story "The Obsidian Age" are a team of heroes (ish) from 1020 BC, each from a different ancient civilisation: Gamemnae (Atlantis), Rama Khan (the Indian subcontinent), Tezumak (Mesoamerica), Manitou Raven and Dawn (North America), Sela (sub-Saharan Africa), the Anointed One (Hebrew) and the Whaler (Inuit).
