Canundrum,

Somewhere it in these 1200 pages ST had said that the way way below rank and file that came here know who they are and what they are to do.. so those ones know. Also he mentioned the other main faction of TPTB, the orion energies that came from Maldek after blowing it to bits.. also know who they are. Apparently these ones were given rememberance of their past lives in hopes that they would remember what they had done on Maldek and learn from that planet's destruction. Instead they remembered strongly the feelings of being in power and control and decided to continue on with the same ways here on Earth.

So I guess TPTB know who they are, and yes I think ST said that they are some of the same ones who caused the issues with Atlantis. :(