The Entity (Strife)

The Entity is an alien encountered in Strife, particularily the final boss. It's apperant offspring are called Spectres, and it is usually reffered to as a god by The Order, a cultlike following consisting of many cyborgs. It is an evil creature which, evidently enough, feeds off of evil and chaos, not to mention causing it. It is semi-physical, only being capable of being damaged by a relic, called the Sigil, which appears to be of the same origins as The Entity.