User blog comment:Arbington/New ME4 Teaser Pics, Possible Upcoming Reveal/@comment-1679409-20131114091848/@comment-9753034-20131114095641

They also speculate that the first figure could be a turian, which is impossible because it lacks the collar thing. Or at least I think there's way too much neck.

I agree the second figure is definitely not a turian because, well, there's nothing turian about that figure. The "female" character (because it's squished in the image and thus thinner? I have no idea) could well be the same figure as the one on the other monitor.

The figures on "Ilos/Sur'Kesh" are humanoid, not necessarily humans. Menae was just rocks; the "similar" planet seems to have a whole lot more going on. Mars is also not the only red planet out there.