Levistus
Even by the otherworldly standards of the Nine Hells, the realm of Stygia and its lord, Levistus, both occupy strange positions in the hierarchy. Stygia is a frozen wasteland of mysterious origin, a churning, murky sea covered in a thick layer of ice. Where the ice gives way to open water, immense icebergs drift on the unpredictable currents. Levistus is trapped within one of these bergs, imprisoned there by Asmodeus for reasons that few can even guess about.
As part of Levistus’s punishment, Asmodeus decreed that he must offer escape and safety to the desperate, especially those who fear for their lives. A criminal might entreat Levistus on the eve of his execution, for instance, agreeing to exchange his soul for a boon that enables him to escape to safety. With nothing to do in his tomb other than answer distant entreaties from the Material Plane, Levistus has attracted the devotion of a wide variety of criminals, rascals, and ne’er-do-wells across a multitude of worlds. He continues to meet his quota of souls, both despite his lack of mobility and because of it. Being imprisoned means that Levistus can focus his full attention on such matters, which allows him to excel at what he does.