Wanted a more beat up, damaged Ultron drone or weakened Ultron. Used the Ultimate Beetle body and removed all the bumps it had. Took the Head and shoulders from the comic Ultron. Changed the antenna out for thicker ones.
The rest is fodder tubes and the chest emitter thing; then gave it a dark metallic base paint with lighter metal overcoat. Added small bronze areas like rest/corrosion and thats it! Thanks for looking!