Aboleth

Aboleths (pronounced: /ˈæboʊlɛθ/ ÆB-o-leth) were a race of malevolent, eel-like aberrations with potent psionic abilities originally from the Far Realm. Before the coming of the gods, aboleths lurked in primordial oceans and underground lakes. They reached out with their minds and seized control of the burgeoning life-forms of the mortal realm, making those creatures their slaves. Their dominance made them like gods. Then the true gods appeared, smashing the aboleths’ empire and freeing their slaves.

An aboleth and two servitors

Aboleths have never forgotten.

Description

Aboleths were fish-like amphibians of immense size, often reaching 20 feet (6.1 meters) in length and weighing up to 6,500 pounds (2,900 kilograms), though they continued to grow as they aged and some fantastically ancient specimens might reach 40 feet (12 meters) in length. They resembled a bizarre eel, with long, tubular bodies, as well as a tail at one end and two fins near the head and another along the back. Aboleths' mouths were lamprey-like, filled with serrated, jawless teeth.

Aboleths did not die of old age and so lived on indefinitely, barring violence or disease.

Abilities

Aboleths had powerful psionic powers and were natural psions like mind flayers and many other denizens of the Far Realm. However, aboleths had a much more fearsome ability, the capacity to secrete a viscous gray fluid, much like mucus, which brought about a terrible transformation in air-breathing creatures so unfortunate as to be caught in the fluid. The skin of the victim was transformed into a membrane that allowed it to breathe in water, and changed the creature's consciousness to that of a mindless servant. This allowed aboleths to keep slaves, known as aboleth servitors, which they dominated and kept captive through their mind. Only the most powerful aboleths could do this, however, completing the process through a powerful ritual.

Another strange feature of aboleths was their memory. An aboleth was born with a racial memory, each individual inheriting the memories of its ancestors. Furthermore, it assimilated the memories of those it consumed. Each aboleth's memories were stored within an ever-growing part of its brain that extended down its back as it aged. Aboleths enjoyed spending time lost in particularly fine memories of their ancestors, and if they had nothing better to do, they might relive entire portions of their forebears' lives.

Encounters with the Fishwives

The party faced and killed banished an aboleth deep within the unsettling crevasse.