Karellen
Role, aliases, and summary hidden by structure-only view.
also known as Supervisor, the Supervisor, Supervisor for Earth, Mr. Supervisor
Overlord Supervisor for EarthAlien supervisor who broadcasts to humanity, orchestrates the kidnapping trap, reveals his demonic appearance publicly, and outlines the Overlords' long-term but cryptic plans.
In Childhood's End (Arthur C. Clarke, 1953)