That happens here. Like the idea of doppelgangers within one world, but take the reality times infinity, because there are infinite worlds with less than infinite options for how people look. In the scheme of things, it's one of the least weird things the portal will introduce you to, actually.
Steve's face is one, so don't go taking any aggression out on it, because chances are it won't even be him and I'm protective of the multiple variations and even though they're all totally capable of macho manly brawling, I will still kick your ass, because I'm just that cranky today.