I was toying with an idea for a fairly small group of people. People who lived during the time of the old civilization. They used a combination of magic and technology to keep themselves alive for all of this time. They don't necessarily associate heavily or live together. Rather, they've spread out among the people in attempt to push the political landscape or make moves from behind the scenes to bring forth whatever their goal is. Most other people wouldn't know that they were any different from normal people in their perspective races. They would, however, have a very deep understanding of ancient technology and magic. And their general wisdom would be high because they've lived so long.
The Array would likely have the most knowledge about these individuals since they are the largest and most well-funded organization it seems. To the rest of the people they might be like myths.
Their beliefs and objectives might be deeply rooted into whatever was going on with the old world died. Maybe they are still on a mission. Or maybe their side lost something and they have a plan for vengeance.
Just an idear.