The Rod of Seven Parts
The aboleth is a massive, three-eyed, tubular fish-like monstrosity with tentacles and segmented flesh. Its belly is lined with mouth-like orifices that exude a foul slime that smells like rancid grease, which it uses not only to breathe both on land and in water, but also brings about a loathsome transformation when applied to land-dwelling, air-breathing creatures. The mucus transforms the land-dweller’s flesh into a transparent membrane and reduces their mind to a near-empty husk, so that the aboleth can crush what remains of their will and use them as slaves.
Perhaps even more fearsome than the bizarre and grotesque physiology of the aboleth is their aberrant psychology. Every aboleth is born with an inherited racial memory, allowing it to recall, and in times of inactivity, relive, not only its past experiences, but also those of every aboleth that came before it in its family line. Rumors persist that aboleths can also relive the memories of sentient creatures they have eaten, but so far no scholar or sage has been willing to go the lengths necessary to prove such hearsay. Owing to these prodigious memories, many aboleths claim to remember a time before gods and demons, before devils and spirits, when there was only the endless depths of the oceans, the vastness of space, and the weak flesh of lesser beings waiting to be dominated.