Juiblex (/ˈdʒuːblɛks/ JOO-bleks)

Juiblex was a demon lord of oozes and shapeless things, a being that exemplified the corruptive nature of the Abyss and that was almost glorious in its unrivaled obscenity. Ridiculed by its peers as "Lord of Nothing", the Faceless Lord was, even to them, a demon as revoltingly vile in body as it was inscrutably aberrant in mind.

Juiblex is deemed a lesser figure in abyssal hierarchy, judged Lord of Nothing by his peers. However, in my research, I have plumbed the foul mire to examine the full darkness that is this disturbing fiend.
— Demonomicon of Iggwilv

Description

Juiblex was, in short, disgusting, undoubtedly hideous to demons of all kinds and perhaps the most foul of all demon lords and deities. Its abhorrent aura was as foul as its sickening, shapeless form, a primordial soup of bubbling bile and nauseating fluid bound by a thin epidermis bathed in oil and thick mucus. The amorphous mass was swirled and striated with a hideous mixture of hues, primarily streaks of black and green combined with bilious browns and yellows as well as translucent grays and ambers. Caustic slime of the same coloration was constantly secreted from the sludge-spewing horror and it was known to weep tears of encrusting black grime from the glaring red eyes that pulsated and shifted across it, peering in all directions. The Faceless Lord was an appropriate name for the gelatinous monster since it lacked any kind of set form, adopting various sizes and shapes with ease. At rest, it was nothing more than a spread-out volume of reeking filth but at any point it could form a simple blob or gather together into a 18‒20 ft (5.5‒6.1 m) pillar of unsteady ordure before collapsing into a rancid wave and stretching out into a voluminous pool of animated ooze. Most commonly however, when confronted by others, it gathered itself into a hideous heap, a 9 ft (2.7 m) cone of glistening jelly and shuddering slime. No matter the form, it could manifest dripping, trembling pseudopods in all directions to lash out and hungrily scoop up any creature that caught its attention.