The Gman is a really powerful guy who can seemingly stop time and pull you away from the explosion on the citadel. The Vortigaunts pulled Alyx from the explosion as well, although it did take a few more. Also the Vortigaunts have access to whatever it is the Gman holds you in. I'm thinking that the Gman is just a really powerful Vortigaunt. It could just be the voice actors but even the inflection in their voices is similar. The Vortigaunts and the Gman seem to be working towrds the same goals. In Halflife it seems Gman is pointing you twords Xen to destroy Niahlenth(sp?) to free the Vortigaunts. In HL2 the Vortigaunts seem to want the Combine destroyed and the Gman brought you back for the same reason.
This is just something I thought of while trying to sleep. If its stupid beyond belief dont be afraid to flame away!
This is just something I thought of while trying to sleep. If its stupid beyond belief dont be afraid to flame away!