Egis and Beastmen

[Skies]

Also, I thought Louisoix was a Paragon? He seems like a 100% good guy, so I must have something mixed up...

Archon and Paragon.
The Sharlayan NPCs, of which Louisoix was one of, were the Archons.
There were rumons, back when the Archons started to show up in 1.0, that they were the so-called Paragons that taught the beast tribes how to summon.

Won't say much more if you haven't reached far enough in the story to notice, though.