Ha, I've always been saying I'd like to have 4 arms like Goro from Mortal Kombat.<p>I guess some people actually working in this field had similar ideas :D<p>Though tbh having those arms on an independent robot would be much more versatile.<p>Alternatively, they need to have their own support (so basically, an exoskeleton) because the human body is not up to the task of supporting all the extra weight.