Might try making his eye glow, might look a bit better there. They are certainly not mindless creatures, but not on the same level as the humans would be, if you get my meaning.
Removing the eyes really dehumanize them. So they look more like mindless cruel monsters than humans with feelings and reason. I think that's what you want, and I think the feeling is great and you pass it very well. I would even push the dehumanization concept even more with the ones with eye(s). If you look at the last…
just replied to this last pic in waywo but I'll copy paste it here: hey man, just curious but what are these patches supposed to be made of? In the context of the head I feel like they should be skin, bits of somebody else's face, but the way you've done the stretching and colour they just look like leather patches. If…