Yugoloths (formerly known as daemons) are neutral evil natives of the lower planes of the Bleak Eternity of Gehenna and the Gray Waste of Hades.
While at first glance these creatures seem like enormous and foul bullywugs, their dangerous gait, dead eyes, and wicked claws give away their fiendish nature. In their home environment, hydroloths swim the sickening rivers and seas of Abaddon and the River Styx, ducking beneath the rivers of pus and bile only to leap out at enemies and rend their flesh with tooth and claw. It is said these are among the few creatures able to survive in the deadly waters of the River Styx. When called to the Material Plane, hydroloths serve powerful spellcasters, protecting domains dotted with pools, streams, and even sewer complexes. Associated with death by drowning, these fiends use a favored tactic to draw the most anguish from their victims. Hydroloths first attack with their inky black sleep spittle, hoping to render victims unconscious. With their opponents unable to fight back, hydroloths drag their enemies into the foul waters they call home and delight as the liquid fills their victims’ gasping lungs. If unable to drown a victim, they finish the job with jaws and claws.
Hydroloths possess an awkward gait, springing back on their heels and leaping about like humanoid frogs. Even so, they move in an unpredictable manner, twisting their bodies with each hopping movement. Hydroloths can also unfurl flaps of skin that allow them to glide through the air.