Undead

Undead (不死系魔物) are a classification of Monster. They are defined as monsters with bodies that are dead.

Properties
Undead are a type of Demi-Spiritual Lifeform that reside within lifeless and immortal bodies, lacking any life force. They tend to possess little to no physical strength but have a potent magic power and wicked miasma that more than makes up for it.

They have a notable weakness or at least an aversion to sunlight and are thus almost never seen outside during daylight hours. They're also especially weak to Holy Magic, even more so than regular monsters.