Deathman

Deathmen (妖死族) are a race of Undead Majin. Their bodies are composed of the power and flesh of thousands of corpses created through the forbidden magic Birthday (妖死冥産) and are Demon Lord-level monsters.

Appearance
Deathmen, as high-level beings, possess an appearance based on their own self-image. This results in an appearance that is identical to that of the individual's previous life or otherwise desired form. They sometimes possess a more monstrous second form influenced by their body's essence as an Undead, resulting in a strange zombie-like appearance.

Properties
As Undead, they have no Ego, however, using an incarnation ritual, it is possible to awaken the strongest Ego (or Egos, if there’s multiple Egos of the same strength) remaining from the owners of the corpses used to create the body to possess the body. If multiple Egos share a body, one Ego will become more dominant than the rest or, in rarer cases, multiple strong Egos form a new dominant Ego. While the bodies aren't Spiritual Lifeforms, the Egos possessing them are, and as Spiritual Lifeforms they are able to live with just their Astral Bodies and repossess a host if there isn't already a strong Soul inside it.

Intrinsic Skills

 * Magic Resistance

Trivia

 * They are different from most Undead, in that they possess full flesh and are equipped with biological functions, the extent of which is still yet to be known. However, it is likely that Deathmen cannot reproduce, given their low population and that they can only be created through the "Birthday" spell.
 * Clayman can transform into his "Crazy Pierrot" form which is more combat oriented. Given Clayman's weak power, it is possible it was given to him for self-defense and offense solely. It is unlikely that others also possess similar transformations.