If Christian religions were the Avengers....
Orthodoxy would be Captain America: the First Avenger;
Non-Chalcedoneans would be Hawkeye and Black Widow.. not as big as the other ones, with not as much power, they hint they were together in the past, but no longer. Each work pretty well on their own though;
RC would be the Dr. Banner/Hulk: very brainy, maybe too much, he got angry with people around him and actually because of that he became too big and too strong. Because the others would call him a monster in that state, he prefers to be alone. In the beginning (Hulk movies) he was sort of uncontrollable and would "smash punny churches". Eventually the rational side takes hold of the power of the monster and he learns to work with his colleagues again, even acting as per the strategy of Captain America. That last part remains to be seen.
Iron-Man is the Protestant churches, always changing its external armor (rules and doctrines) every movie to become ever more relevant effective and cool.
Thor would be Christian culture and civilization (not religion). In sheer raw power it's the most powerful, but it's his evil brother Loki (culture of greed, dominion and passion for centralized power) that is the villain of the movie trying to conquer the world and kill the Avengers.