I really admire the sheer amount of meticulous detail you've put into this: the little hairs on Beasts, the wrinkling of clothing to match the moving bodies, the cross-hatching of the muscles. It really adds to the realism and shows your skills as an artist.
Hey dude, this is very cool. I love the renders you done on all of them. Somone mentioned Logans shoulders, but i really think that look fits awsome with the style youve used and the character himself. My favorite one is the Colossus dude, nice job man.