Robert Downey Jr. returns to the MCU with other confirmed actors including stars Chris Hemsworth and Tom Hiddleston, 'X-Men' stars like Patrick Stewart and Ian McKellen, and a good chunk from the studio's 'Thunderbolts.

"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."

Doomsday, the biggest question on everyone's mind is who is going to be facing off against Robert Downy Jr.'s Dr. Doom. Well, the wait is over as Marvel reveals the heroes of the upcoming movie throughout the day with a live stream on their social media platforms.