*Thinks "Drasnians? I don't remember who they were"* *reads discussion below* OH THEM OF COURSE ACK. I think I vaguely twigged at the time but was Very Young so didn't think about it very hard.
Based on reading the books more than a decade ago so it may be bunk: One thing I liked about the Belgariad is that unlike say Tolkein where you have "normal" humans and then a bunch of kooky other species, you have all these different cultures and they're all human and all kind of weird (and mostly positively portrayed Except of course the Slytherins). Of course the fact they're so neatly defined despite having no particular reason not to get all mooshy at the edges due to intermarriage is kind of..hmm.