Samus Aran's last armor from Metroid Prime 2 - Echoes. I never played the game, but I do loved that design, so much I wanted to sprite it. In fact, that was made for a contest, which the goal was about making a 3D character in a 2D sprite.
I know the poses looks kind of stiffy there, so point out something different.
EDIT: Revised anatomy, proportions (according to Samus artwork) and some shading issues ;)