However, even with a loaded roster of high-profile celebrities, one name continues to be a primary talking point — and likely will remain one over the next year.Robert Downey Jr. stepping into the role of Doctor Doom has the potential to set up an incredibly unique film and move the former Iron Man actor over to the other team.

Even before the controversial return of Robert Downey Jr to the MCU, Marvel made a habit of bringing characters back in strange and unexpected ways.

It's unclear what the future holds for the Guardians of the Galaxy, but one star would love to return in Avengers: Doomsday and / or Secret Wars.