Here is a 3D model I made in Onshape of a Grunt from the 1982 arcade game, Robotron 2084 (or just simply Robotron). Making this model was an interesting experience to say the least, as I not only had to make some half and partial pixels to give it more depth and to make some of the different parts have their respective colors, but I also had make it into parts when I realized it wouldn't let me merge the body with the legs, meaning it could definately be 3D printed into an action figure with moveable joints. You can port this model to whatever you want as long as you credit me.