"Avengers: Doomsday" finds brothers Joe and Anthony Russo back in the directors chairs. They return to Marvel having helmed the Captain America films "Captain America: The Winter Soldier" and "Captain America: Civil War," as well as "Avengers: Infinity War" and "Avengers: Endgame."

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.