Alsara: Requiem and Revolution
Undead are magical creatures which are involved, in some way, with life after death. They are considered vile things, manifesting either the worst of humanity or simply distasteful misuse of power. They can be created naturally via magical blights, but more often they are manufactured—and controlled—by wizards known as Necromancers.
They are most commonly found in Atur, where use of Undead servants is legal in most circumstances. They can also be found in Vokaya, where they are strictly illegal but the practice originated.