The way I perceive it is more abstract than the way you seem to be interpreting. I see DCs, SGs and that “Awareness Behind” as a internal part of ourselves. Deep inside they share something in common. You don’t need to see it as a character for it to exist, and you don’t even need to dream to reach it. Then, I don’t think it’s necessary to ask for it during a lucid dream, but I guess it is easier that way.
Forgive me, I don’t think I made it much clearer.
Perhaps you would prefer asking Robbert Waggoner himself. He has an article here in LD4all. Maybe he replies PMs.