Moderation Comment:
This is a nice set of useful models. I'll say it bugs me a bit that the only thing that changes between some of the variations is the little portion of skin color we're able to see across their full helms - would be good if there was some more changes, or more skin to be seen, but since the alternates are useful, it's ok like that. The actual issue I see, though, is some lazy wrap, here and there. The case which you could really change is the helmet horns.
View attachment 244344
Your wrapped version is unecessarily cut-off and seamed, I don't know why. Please fix that if you're able, and I'd recommend you to check the wrap overall, because it has some faults. If anything let me know. Awaiting update.