(a.k.a. Dopplegangers, Thought Projection Forms)
Still a mystery to such well informed conspiracies as the Cheiron Group, what is known is that they lack a proper biology and utterly disintegrate when killed. Strong emotions can change their nature and appearance. They are immune to torture (often expiring) and lack details of their origin. They photograph poorly, appear in mirrors as blurs. This a suspected effect of Negative L-Field Dissonance. Exposure to sensitives causes erratic changes.