Perhaps the most terrifying thing about the Abyss is that demons aren’t even the most terrifying things in it. There are creatures in the Abyss that stalk demons they way a tiger—or a carnosaur—might a man. The bebilith is one such creature. Not that mortals are any safer: a bebilith can peel the armor from a soldier’s body mid-battle and follow him across the planes to finish its meal.
A famous ranger has stalked demons from almost the beginning of his career. Now he seeks allies to join him in tracking even more dangerous game—the demon-hunting bebiliths.
In a plane-hopping race against time, a party of adventurers takes a risky shortcut through the Abyss. The demons that might otherwise menace the party seem to avoid the layer, as it is frequented by bebiliths. But the guide himself is a tiefling sorcerer, and his Abyssal-tainted blood is potent enough to draw the spider-like outsiders straight toward him.
A cosmopolitan succubus and her quasit footman need bodyguards to protect them from bebilith assaults. (A bebilith once tasted the succubus’s ichor on an ill-fated journey, and now a plane-shifting band waits to ambush her whenever she leaves the confines of civilization.) The adventurers whom they approach would probably be happy to leave the pair to their much-deserved fates, but the quasit claims to be in possession of a soul of great interest to them.
—Pathfinder Bestiary 32