Just some boss character concept.
The only thing I'd critique about this is how obviously mirrored the legs/feet look, maybe if you changed one of the feet a little it'd work better?
Ahh, still dont explain the wierd anatomy hehe
But he is the lord of disproportionately small forearms.
The rendering is great, but the anatomy needs some serious lookover! Try to find some references of similar poses and study them in detail, this piece would be top-notch with right anatomy for sure! Keep it up!