The rest of the world?
In a recent Superman Hardcover graphic novel, Superman explains why he cannot be affiliated with the US government even though he stands for "Truth, Justice, and the American way." He explains that doing so would make him devisive in world that needs to able to stand united when facing truly global peril.
This begs the question why on Earth (sorry about the pun) the aliens would set an american with magic jammies to protect America when from space our political divisions seem meaningless. If they did so because they knew those divisions still mattered to our immature species, is it possuble they also provided heroes for other nations or regions of the planet? Perhaps all of them good men and women who, while never becoming weapons for their governments, served as secret protectors of their peoples? Imagine Ralph's first encounter with the Supreme Soviet Superman (or perhaps the Prime Patagonian Paragon).
Maybe the planet could face a threat so dire that all these empowered everymen(and women) might have to band together to face it.
Make a helluva story arc.