Not much of a modder, but writes an Medieval 2: Total War AAR and designs scenarios for Empire Earth.
This army appeared in my Castille game while I was fighting Naples. The game calls them Orthodox zealots, but it seems kind of suspicious that they have a pyramid and an eye as a symbol. While they occupied Epirus, I came there and kicked them out while taking over Epirus. Ottomans finished them off.
So there's 2 options:
1. This is due to very good historical research, and some orthodox organizations belonged to Illuminati.
2. Paradox interactive or parts of it are in Illuminati and this is advertisement from them.