Nephilim

The Nephilim are an insectoid race from the core of the known galaxy.

The emergence of the Nephilim was prophesied for millennia by the Kilrathi in the ancient prophecy known as Kn'thrak, which foretold the dawning of an era of "great darkness", when a race would come forth to destroy all who reside within the galaxy. This era would begin when "one who has the heart of a Kilrathi, but is not Kilrathi born" brought destruction upon the Kilrathi. This prophecy was one of the primary drives for the Kilrathi's deeply-rooted warrior culture, as they constantly fought to ensure their readiness when their prophesied enemy would arrive.

In 2681, the Nephilim first emerged in the Kilrah system, encountering a Terran Confederation science team on the TCS Devereaux. In that engagement, the Nephilim destroyed the Devereaux, killing all who were on board, although not before they were able to send a distress signal. The Nephilim established a base of operations in the system from which to initiate a large-scale invasion of the known galaxy, within the heart of the former Kilrathi Empire.