Whatever it is, this is the wrong still-frame to show out of context. It clearly has legs, and wing-like structures coming off the hips, but the rest is a garbled mess. Where is the head/cockpit? Is that a rifle it is holding? On the subject of holding, does it even have hands? Can’t tell any of that from this picture. We need to see the next frame or some other shot of the robot to have any idea what it looks like.