Un-damned (Fun)

Appearance
Human skeletons with extended and changed bone structures that make them more durable and worthwhile as the flesh roots off their mutated forms. They are equipped with whatever they chose to wield during their lifetimes.

Information
The Un-damned form the basis of the Promised School of Necromancy, one of the higher kinds of the dark arts. Instead of having their corpses be used as mere shells after their life, the Un-damned instead agree to give their bodies to this purpose, in turn retaining at least a sliver of their soul and thus being granted the chance of returning to life as a shadow of what they were in life at the cost of eternal servitude.

Reference
Fought in Chapter 424 "Grinding is a constant in the Gamer’s life"