Overlords hide their devil-shaped bodies
The Overlords rule Earth for fifty years through Supervisor Karellen without showing themselves. When they finally appear, they have leathery wings, horns and tails, the exact shape of the Christian devil. The novel explains that humanity's image of the devil was not a memory of the past but a racial premonition of the future: the Overlords were present at humanity's ending, not its beginning, and they waited until trust had been built before revealing a form that fear would otherwise have rejected.
