Reaver

The Reavers are a post-organic alien race that have evolved into intricate cybernetically-infused omniscient beings that scour the galaxies in search of intelligent lifeforms and manufacturing benevolent genocides to prevent intelligent life from destroying the fabric of the universe itself. Throughout history the Reavers have seen countless species grow into spacefaring warmongers hellbent on consumption of resources and eradication of species other than themselves. Occam's razor suggest the easiest solution to prevent the destruction of the Universe is to eradicate organic life for its own good.