This is the 3D model of a mecha-style robot that was made on blender and is very light and low-poly. It is also game-ready because it is completely rigged and ready for use in animations or otherwise.
BLEND (Blender, filesize: 1.34 MB), OBJ (OBJ, filesize: 82.7 KB), FBX (Autodesk FBX, filesize: 753 KB), STL (Stereolithography, filesize: 53.5 KB)