Here is 3d model of Robot was created from parts and named by objects and textures materials. Within a nice scene with good lighting it's easy to get pretty realistic results with this.
OBJ (OBJ, filesize: 2.4 MB), C4D (Cinema 4D, filesize: 394 KB), 3DS (3D Studio, filesize: 347 KB), FBX (Autodesk FBX, filesize: 1.7 MB), MAX (Autodesk 3ds Max, filesize: 1.24 MB), MA (Autodesk Maya, filesize: 430 KB)