lich

In modern fantasy fiction, a lich (sometimes spelled liche, cognate to German Leiche "corpse") is a type of undead creature. Often such a creature is the result of a transformation, as a powerful magician or king striving for eternal life uses spells or rituals to bind his intellect to his animated corpse and thereby achieve a form of immortality. Liches are depicted as being clearly cadaverous, their bodies desiccated or even completely skeletal. Liches are often depicted as holding power over hordes of lesser undead creatures, using them as their soldiers and servants, and thus are a threat both individually and as leaders of belligerent forces.