The beings were referenced in the DC comic book Hitman, by Garth Ennis, which briefly featured demons called "The Multi-Angled Ones" who end up killing most of Section 8.
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They also appear in Simon R. Green's Secret History series of books The Man with the Golden Torc (2007), Daemons Are Forever (2008), and The Spy Who Haunted Me (2009).
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In the Marvel Comics cosmic crossover event "Realm of Kings," written by Dan Abnett and Andy Lanning, Quasar travels through a time/space rift to an alternate earth with multiple Lovecraftian elements being part of the everyday reality of that world.
The story is the culmination of events starting with the "Annihilation" and more specifically the storyline "War of Kings", which climaxed with the opening of a hole between alternate universes, and "Realm of Kings", which involved different characters in conflict with the Many-angled ones and counterparts of the Earth-616 superheroes.