Fans are finally learning, officially, who will be joiningRobert Downey Jr.in the highly anticipatedAvengers: Doomsday,which releases in 2026. The casting announcement coming in a cryptic livestream to Marvel Studios' social media that had fans seated — no, really. Slowly but surely, cast chairs are revealed, includingChris Hemsworth(Thor: Love & Thunder) andVanessa Kirby(Fantastic Four: First Steps),Anthony Mackie(Captain America: Brave New World),Sebastian Stan(The Falcon and the Winter Soldier),Letitia Wright(Black Panther),Paul Rudd(Ant-Man and the Wasp),Wyatt Russell(Thunderbolts*), andTenoch Huerta Mejía(Black Panther: Wakanda Forever),Ebon Moss-Bachrach(Fantastic Four: First Steps),Simu Liu(Shang-Chi and the Legend of the Ten Rings),Florence Pugh(Black Widow),Kelsey Grammer(X-Men),Lewis Pullman(Thunderbolts*),Danny Ramirez(Captain America: Brave New World),Joseph Quinn(Fantastic Four: First Steps),David Harbour(Black Widow),Winston Duke(Black Panther),Hannah John-Kamen(Thunderbolts*),Tom Hiddleston(Loki),Patrick Stewart(X-Men)....