WARLOCK by ganker13

Fallen Celestials are a rare paradox; by all conventional rules of cosmology, they should not exist, as they are divine entities of the heavenly realms. Although fallen from heavenly realm they are not necessary evil. True neutrals with own agenda. Extremely dangerous when double crossed.

Almost unheard-of in the mortal world, Fallen are typically the result of a Celestial who has betrayed their heavenly duties or the edicts of the Celestial realm. Said creatures are cast out of the heavens, never to return, though the actual extent of their punishment atop this differs dramatically. Some are simply sent to the mortal world and observed; some are even ordered to serve a penance which could revoke their fallen status. The worst offenders are often sent straight to the lower planes.

They are mortal in a way - they can be destroyed if they lose control over their mana pool, yet technically immortal if other life exists which they can harvest to prolong their existence. Sufficient supply of alive creatures is necessary for their own survival, thus paradoxically defending it from destruction before they can consume it themselves.