As I was driving home from work yesterday, I had a fairly audacious idea. Rather than supplying random townspeople to meet NG's socialization needs, we could do something out of left field: let him talk to the Powers Themselves.
My original conception involved the Green Lady and the Axe-bearer, though I am not sure what they would discuss with NG. One idea was for them to present the creation of the world from their own perspectives.
The second idea involved presenting avatars of all eight of the major powers (leaving aside the High King and Aethr, as they are not known to have taken mortal form) and perhaps Khel and Elmoast as well. I think in that scenario - which might be too work-intensive for an Alpha - the conversation might revolve around learning the various ways the Powers and the demi-Powers relate to one another.