The children of Eden and the creations of God; humans long ago left the confines of God's oversight to forge a path of their own. Because of this, humans were considered largely inconsequential during a vast majority of the wars between Michael and Lucifer. Since humans had their supernatural powers suppressed, they and the Earth were largely used as pawns by God to goad and irritate Lucifer.
Humans are unique in that they are the only race that can naturally integrate and wield cybernetics. Since technology naturally blocks the flow of supernatural energy, it is rumored that implanting a supernatural creature with cybernetics results in that creatures death. However, there have been instances where demons have found a way to integrate cybernetics within themselves using demonic symbiosis. Even so, humans that are augmented with cybernetics lose their connection to their spiritual or magical energy.