On the TV show The Orville, the Kaylon are currently the enemies of the Planetary Union. The Kaylon are a mechanical species who regard themselves as superior to biological species, and they sent a representative, Issac, to determine whether or not they should preserve the Planetary Union. We learn in the two-part episode “Identity” (S2, E8&9) that the Kaylon have consumed all of the land and resources of their homeworld and wish to expand into the galaxy and exterminate species that they deem to be unworthy of preservation. The thing is, though, they have made poor use of their world and still have plenty of resources left - perhaps enough to last until the stars turn to iron.