[8] Another note Lovecraft made to himself later in 1919 refers to an idea for a story: "A terrible pilgrimage to seek the nighted throne of the far daemon-sultan Azathoth.

"[9] In a letter to Frank Belknap Long, Lovecraft ties this plot germ to Vathek, a supernatural novel by William Beckford about a wicked caliph.

[14] Other than the fragmentary draft described above, The Dream-Quest of Unknown Kadath was the first fiction by Lovecraft to mention Azathoth, and describes his realm as being beyond any and everything, and in which no dreams reach, placing it beyond the Dreamlands:[15] There were, in such voyages, incalculable local dangers; as well as that shocking final peril which gibbers unmentionably outside the ordered universe, where no dreams reach; that last amorphous blight of nethermost confusion which blasphemes and bubbles at the centre of all infinity—the boundless daemon-sultan Azathoth, whose name no lips dare speak aloud, and who gnaws hungrily in inconceivable, unlighted chambers beyond time amidst the muffled, maddening beating of vile drums and the thin, monotonous whine of accursed flutes; to which detestable pounding and piping dance slowly, awkwardly, and absurdly the gigantic ultimate gods, the blind, voiceless, tenebrous, mindless Other Gods whose soul and messenger is the crawling chaos Nyarlathotep.Verse 22 of Lovecraft's 1929 poetry cycle Fungi from Yuggoth is entitled "Azathoth", and consists of the following: Out in the mindless void the daemon bore mePast the bright clusters of dimensioned space,Till neither time nor matter stretched before me,But only Chaos, without form or place.Here the vast Lord of All in darkness mutteredThings he had dreamed but could not understand,While near him shapeless bat-things flopped and flutteredIn idiot vortices that ray-streams fanned.They danced insanely to the high, thin whiningOf a cracked flute clutched in a monstrous paw,Whence flow the aimless waves whose chance combiningGives each frail cosmos its eternal law.

"[22] Gilman wakes from another dream remembering "the thin, monotonous piping of an unseen flute", and decides that "he had picked up that last conception from what he had read in the Necronomicon about the mindless entity Azathoth, which rules all time and space from a curiously environed black throne at the centre of Chaos".

[23] He later fears finding himself "in the spiral black vortices of that ultimate void of Chaos wherein reigns the mindless daemon-sultan Azathoth".

[26] The last major reference in Lovecraft's fiction to Azathoth was in 1935's "The Haunter of the Dark", which tells of "the ancient legends of Ultimate Chaos, at whose center sprawls the blind idiot god Azathoth, Lord of All Things, encircled by his flopping horde of mindless and amorphous dancers, and lulled by the thin monotonous piping of a demonic flute held in nameless paws".

With Azathoth the ancestor, his creation goes through his children such as Nyarlathotep, "The Nameless Mist," and "Darkness," of Yog-Sothoth, Shub-Niggurath, Nug and Yeb, Cthulhu, Tsathoggua, and several deities and monsters that are unmentioned outside the letter, and some of Lovecraft's and Clark Ashton Smith's fancifully-posited human forebears.