This is to review what Sigma has went through near the current latest installment in the X series.

At the end of X7, Sigma was shown to have been ejected from a Building, several stories up... Not to be shown again... Then we see in X8 a Sigma entity without anything of that body? No head, or body similarities.

This is where my theory comes from. Sigma manipulated Red Alert in X7, with most fighting the Hunters. Yet we can assume that few survived. But mostly we can assume that Sigma survived (obviously, but not the point) and from then disappeared.

My theory consists of Sigma going into hiding after the X7 events, and either using remaining Red Alert members as a cult to his aid, or other members whom perhaps have been following him for years. What I mean is, looking at the inconsistency