Alastor

Knight Alastor is a Gidim demon and head-hunter of Queen Beleth. He rides a Nightmare steed and wields the dreaded greatsword Shadowfang. An extremely dangerous demon, Alastor is infamous among the Watchers for effortlessly killing several humans when summoned improperly. He is unfailing as a hunter, always killing those he is sent after. He governs thirty legions of Tartaruchi.

Physical description
Alastor's true form is that of a tarry black winged creature.