A proto-alien/demon race being made by Amon. He has the interests of one day making his own race of these beings who will follow the limits of science and warfare. Right now, the Goetians are primarily of succubus-make in the efforts to gain DNA samplings from the Stillborns, as Amon thinks they are perfect candidates. The current Goetians seem to lack anything resembling subtlety, however.
After the Entity is defeated, it is revealed that Amon believes that his Goetians will master war, and help the peoples of the universe by preventing them from falling into stagnation. Albeit, their “help” will be of a rather brutal and violent nature.