Chuuls are armored, crustacean-like predators that lurk beneath the surfaces of shallow ponds and mires, bursting from concealment to snatch up prey in their chitinous pincers and then paralyzing them with their mouth tentacles before eating them alive.

Chuuls are excellent swimmers but prefer to attack land-bound creatures or those wallowing in shallow water. Once they seize their victims, chuuls often drag grappled foes back into deep water to drown them. Lizardfolk are by far the chuul's favorite prey, though those pale chuul breeds that live underground prefer morlocks, duergar, unwary drow, and other unfortunates who get too close to their subterranean waterways-with the exception of troglodytes, whose flavor chuuls find particularly offensive.

Chuuls are surprisingly intelligent, leading many to speculate fruitlessly on their origins and motivations. They speak a chittering, burbling dialect of Common, but few are inclined to speak to those outside their race, and if chuul society exists beyond their frenzied mating season, humanoids have yet to record it. Instead, chuul intellects seem entirely devoted to seeking out the perfect ambush sites to attack other intelligent creatures and decorating their elaborate lairs with trophies from their kills. Though the chuuls themselves seem uninterested in using tools of any kind, they have an almost compulsive need to collect keepsakes from their victims.

A typical chuul is 8 feet tall and weighs 650 pounds.

Survivors of the ancient aboleth empire, chuuls are crustaceans the aboleths modified and endowed with sentience. They follow the ingrained directives of their creators, as they have done since the dawn of time.

Primeval Relics

In the primeval ages, aboleths ruled a vast empire that spanned the oceans of the world. In those days, the aboleths used mighty magic and bent the minds of the nascent creatures of the mortal realm. However, they were bound to the water and could not enforce their will beyond it without servants. Therefore, they created chuuls.

Perfectly obedient, the chuuls collected sentient creatures and magic at the aboleths' command. Chuuls were designed to endure the ages of the world, growing in size and strength as the eons passed. When the aboleths' empire crumbled with the rise of the gods, the chuuls were cast adrift. However, these creatures continue to do what they did for the aboleths, slowly collecting humanoids, gathering treasure, amassing magic, and consolidating power.

Tireless Guardians

Chuul still guard the ruins of the ancient aboleth empire. They linger in silent observance of eons-old commands. Rumors and ancient maps sometimes lure treasure seekers to these ruins, but the reward for their boldness is death.

Whatever riches that the explorers bring with them adds to the hoard guarded by the chuuls. Chuuls can sense magic at a distance. This sense couples with an innate drive that leads them to slay explorers, take their gear, and bury it in secret locales aboleths dictated eons ago.

Waiting Servants

Although the aboleths' ancient empire fell long ago, the psychic bonds between them and their created servants remain intact. Chuuls that come into contact with aboleths immediately assume their old roles. Such chuuls redirect their compulsions to the service of the aboleths' sinister purposes.

Chuul

Chitinous Servant of Primeval Powers

Chuuls originated in forgotten ages when aboleths and stranger beings ruled alien empires beneath the waves. The aboleths transformed numerous deep-sea predators into servants that could venture beyond the seas to claim more magic and creatures to exploit. Chuuls are the most enduring of these bizarre servants.

Many chuuls serve aboleth overlords, carrying out their whims amid lightless seas and primeval swamps. Other chuuls obey new aberrant masters, such as beholders, grells, or mind flayers. Some chuuls follow their own drives, endlessly collecting ancient magic treasures or interpreting age-old orders to bizarre ends. Regardless of their agendas, chuuls snare creatures in their massive pincers before rendering foes helpless with their paralytic tentacles.

Chuuls don't age and can lie dormant in hidden places for millennia before threats, ancient orders, or strange compulsions awaken them.