Abyssal larvae, also called soul larvae, are not unlike grubs or rot grubs. When people are corrupted by chaos and evil, these chaotic evil mortal souls flow to the Abyss. Larvae can, if given enough time become demon lords. The larva is one of the most selfishly evil of all souls who sink to lower planes after death, and dwell in the gloom of Hades.
Larva look like medium yellow maggots that have gloomy human heads. They scream in pain and when found in Hell they can be located in the Maggot Pit located near Tiamat. Many night hags and other creatures of the evil planes use larva as slaves and barter.