So if we think the other two are based on energy then mabey void is the "anti" side of things. But it doesn't mean it has to be a negative charge (sounds strange) but it could be such a positively charged object that it attracts all neg charged electrons from the soft squishy parts of our body's. Or a (scarier) super negatively charged thing that strips the protons off of us, both are prob not even close to what it is but it's fun to speculate.