Absolute Overpower is taking an MCU approach to the “big” superteams. They don’t exist until a big enough threat warrants them coming together. The Justice League or the Avengers are the “all-stars” of their universe, Earth’s Mightiest heroes, and that’s exactly how we want it to feel, here.
So much of a superhero character is the world they inhabit. It’s impossible to think of Batman without thinking of Gotham. Or Superman without Krypton. The set-up for Absolute Overpower is that this reality is the Marvel 616 Universe, and while we know characters from DC Comics have found their way here, what about their locations?
Absolute Overpower is a tabletop RPG played using the Marvel Multiverse RPG system. However, in this slice of the Multiverse, the universe of Marvel and DC have merged thanks to a fateful event caused by Reed Richards and his family.