Whether on the big screen, the small screen, in comic book form, or any other form of medium, putting together the perfect crossover is often a majorly problematic proposition.
Of course, when done right, there isn't anything better than seeing two established characters or two established franchises crossing over to come together for a joint adventure or a big ol' battle. When looking specifically at the big screen, one recent example of a jaw-dropping, flawless crossover is clearly the stunning, emotional, gut-punching, fist-pumping beauty that is Avengers: Endgame.
But while Endgame ticked so many of the right boxes of how to construct a cinematic crossover in exemplary fashion, not every movie can be Avengers: Endgame. In fact, most crossovers wish they were Avengers: Endgame.
Fear not, this isn't going to be a full-on Marvel love-in. Given how we're going to explore how to put together a crossover movie that hits home in all of the right ways, though, there will be at least a fleeting mention of Earth's Mightiest heroes.
So then, for those looking to avoid the many pitfalls that can befall a well-intended crossover picture, here are some ways to achieve something remarkable from bringing already established franchises together on the silver screen.