Perhaps another find. This image was buried in Andrew Jones extensive portfolio, very much in his Metroid style but not depicting anything in the released games.
Given that they all seem to be robotic or cybernetic constructs, this again may-or-may-not be related to the Metroid 1.5 scenario. The red glow seems to hint at a shared origin.
http://i477.photobucket.com/albums/rr135/mappster84/final_image_andrew_jones.jpg[IMG][/QUOTE]
The red glow seems reminiscent the Ing to me.
[img]http://images3.wikia.nocookie.net/__cb20081030002353/metroid/images/thumb/9/98/Ing_concept2.png/185px-Ing_concept2.png
One of those looks a bit like a Pirate Commando as well.