Total War: ROME II - Emperor Edition

Total War: ROME II - Emperor Edition

Para Bellum - Campaign
Which faction was the author playing, in the preview pictures?
Hi devs,

This is an important question for me.
In the preview pictures for the Workshop page "Para Bellum - Campaign", the author of the mod posted pictures of the world map at turn 25, turn 100, turn 150, turn 200.

My question is: which faction was the player faction?

This is because the Seleucid empire expanded to become the greatest faction on the map. If that was not the player faction, this would mean I have to eliminate the Seleucid faction as a priority, if I were to play that campaign.