Goodness this drawing is freaking enormous!

I like how they're all a slightly different color. The shading in general is interesting. It's minimal, but effective. It's certainly well-drawn, too - very neat and there's no flaws I can see. Their designs look good as well. I guess my only qualm is the background. It would cool if they were standing someplace. Other than that, it's pretty great.

Well-done :-)