Beliar
...Could you possibly link it to Belial? Belial is mentioned in the Dead Sea Scrolls as the leader of darkness against the children of light. He is referred to several times in the Old Testament as symbolizing the powers of chaos, sickness, and death, and once in the New Testament as synonymous with Satan. I's been awhile since I played the game but would that description fit?
"Music,sex,& idea are the currents of connection" - Jim Morrison