The idea is that the "Dragon" and the "Wizard" turn against the Anti-Christ. The Pontiff, in turn, is more like Saruman.

It's sort of like:
The Devil: (Satan, Lucifer, using Owen Abrahamson as a vessel/evil Prophet)
Anti-Christ Owen Abrahamson (Sauron)
Pontiff Elimas (False Prophet-Saruman)
*By the way, what happens in the beginning of the Role Play to the Church under Pontiff Elimas is predictably bad, so not much of a spoiler. 
Khalid Shamoun (Evil Archmage)
The Dragon (Azhi Dahaka) Allied with Khalid Shamoun