Nether devils

The nether devils form a rank of their own; the nephilim is the one listed, and no service is given for the rank as a whole. The Black Magic spell Summon Nether Demon/Devil calls one.

Like all devils it comes from Hades, the nine hells, and keeps faithfully to the lawful Order of Ascendancy under Asmodeus. Summoners must be firm: devils aid those of like alignment and purpose but scorn the incompetent and anyone in league with demons, and they attack demons themselves on sight, and every devil dreads the power of good and cannot abide holy symbols. A flaw in the protective circle or triangle frees it to enslave or kill its summoner, and ordering more than its kind owes breaks the pact at once.