Gary is a collective singular proper noun used to refer to the nation who lives in Gary (City-State). Gary numbers over 6 million in population, which is entirely homogenous in any way you were thinking of asking. This is the result of generations of Eugenics policies instituted by the Gary (Regime), which were expressly designed to make Gary into an entirely uniform people with no discernable differences.

Reproduction is strictly controlled according to neutralizing genetic outliers and imperfections. If you are tall, then I hope you like short women. Here you go, her name is Gary. You already have something in common! (That's the funniest joke in Gary)

Gary outside of Gary (City-State)

Rarely, targets of UnGary (Punishment) are designated for exile instead of execution. Most of them die almost immediately, being completely unsuited for the outside world. Those that do manage to survive (often through sheer luck) are generally in a constant state of shock at learning that the universe is much larger than the 50 sq. mi. dome they previously lived in. For some, the shock is so great that they willingly commit UnGary (Punishment).