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In the show Childhood's End based on the scifi novel by Arthur C. Clarke, one of the alien is depicted as a devil like figure.
>Milo Rodericks, claiming to be the last living human, records a message from the ruin of a post-apocalyptic Earth. In 2016, a fleet of massive alien space ships appear in the skies of Earth. Dubbed 'the Overlords', the alien 'Supervisor for Earth' Karellen speaks to humanity claiming they have come to usher in an age of utopia. Karellen speaks to a farmer named Ricky Stormgren in the form of his deceased wife Annabelle, and chooses Ricky to serve as humanity's representative. Despite initial resistance and distrust from governments, the Overlords systematically eliminate disease, war, hunger, and pollution, setting the stage for the 'Golden Age of Humanity'. When Milo, currently confined to a wheelchair, is shot and killed by a drug dealer, the Overlords kill the attacker and resurrect Milo, as well as giving him the ability to walk. Media mogul Hugo Wainwright secretly organizes a counter-group dubbed the Freedom League, which uses social media to spread distrust about the Overlords. When their years-long campaign fails to slow the aliens' changes, the Freedom League kidnaps Ricky to force Karellen's hand. Karellen intervenes, saving Ricky's life while simultaneously projecting Wainwright's entire conspiracy to the world. Shortly afterwards, Wainwright is found hanged and Karellen dismisses Ricky, saying his work is now finished. Ricky asks Karellen to show his true self to humanity, but the alien retorts that humans are not yet ready to 'accept' his true form. Fifteen years later, Milo has become an astrophysicist, and watches along with Ricky and the rest of the world as Karellen reveals himself for the first time. With Earth now a near-Utopia, humanity has dubbed the Overlords their 'guardian angels', but are shocked and alarmed when Karellen emerges, his appearance resembling that of devils and demons.