Unlife
The Unlife is the power of true evil. It seeks to destroy and create chaos and to feed on that. It does not wish to simply kill, but to devour the spirit of the dying. A person or living beings worst fate is to not only die, but to have ones soul devoured by this power.
Originally a ICE (Iron Crown Enterprises) aspect of Gemstone III that was removed in 1993. The House of the Rising Phoenix was formed to combat the Unlife. It remains to them and others as a concepts of evil. It is represented in the roleplay and perceptual aspects of some of the playerbase in how it confronts darkness and demonic powers.
While the Unlife is not directly supported the society called the Council of Light and it's soul draining abilities are based off it and remain part of the dark underworld of the games structure. Undead, while not the Unlife, are most often created through the power of the Unlife in manifestations of souls placed or trapped into host bodies. Outside of this Luukos and numerous Lornon Arkati are known to use powers in line with the Unlife along with demons and planar enemies.
These are all perceived remnants or tools of this power and play a continual key part of the structure of the game. For those who oppose the Unlife today they seek to fight evil in it's various forms. Be it demonic, unlawful invaders, or the loss of free will through oppression.