Ridiculous question, who cares about their race-THEY'RE MINIONS. Pretty sure also where they came from has been answered in the Minions movie. read more
Aside from that fact, I'll add a guess of my own. You can see that the minions follow orders without fail. read more
The Minions are most definitely racist asian stereotypes. The sequel has an English stereotype character who drinks tea from an antique teapot (along with a butler) and a racist, fat mouatachioed Mexican racist stereotype. read more