The set up and payoff structure of the Marvel films beginning with Iron Man in 2008 may never be fully realized. These stories will continue on for as long as audiences continue to be fans of the material, so any definitive ending for a saga of episodic films requires a conclusion to at least one prominent idea, not necessarily an entire world of characters and their respective potential as branched franchises. This is why Avengers: Endgame is a film deftly committed to playing out the first and last revelation of such a film series. Tony Stark is Iron Man. And the Avengers are the Earth’s mightiest heroes. Everything else in Endgame is secondary, including its villain.