(Image: Marvel Studios)
The Russo Brothers have returned to the director's chair for the fifth Avengers installment, "Doomsday." Since December 17 of last year, a series of trailers have been exclusively premiering in theaters ahead of "Avatar: Fire and Ash." The latest spot, which focuses on the cast from 20th Century Fox's "X-Men" franchise, has now been released online following its week-long theatrical run.
A total of four teaser trailers are being rolled out, one each week. The next trailer, set to debut this week before "Fire and Ash," will spotlight characters from Wakanda, Talokan, and the Fantastic Four.
※ Watch the third trailer below ▼
The film's massive MCU cast includes Simu Liu as Shang-Chi, Paul Rudd as Ant-Man, Wyatt Russell as U.S. Agent, Anthony Mackie as the current Captain America, Pedro Pascal as Mister Fantastic, Letitia Wright as the current Black Panther, Tenoch Huerta Mejía as Namor, Ebon Moss-Bachrach as The Thing, Florence Pugh as the new Black Widow, Lewis Pullman as Sentry, Joseph Quinn as Human Torch, David Harbour as Red Guardian, Hannah John-Kamen as Ghost, Vanessa Kirby as Invisible Woman, Winston Duke as M'Baku, Tom Hiddleston as Loki, Danny Ramirez as the new Falcon, Benedict Cumberbatch as Doctor Strange, and Sebastian Stan as the Winter Soldier. 
(Image: Marvel Studios)
Joining from the Fox "X-Men" universe are Kelsey Grammer as Beast, who previously cameoed in "The Marvels"; Patrick Stewart as Professor X, who appeared in "Doctor Strange in the Multiverse of Madness"; and Channing Tatum as Gambit, set to appear in "Deadpool & Wolverine." The lineup also features Alan Cumming as Nightcrawler, Ian McKellen as Magneto, Rebecca Romijn as the original Mystique, and James Marsden as Cyclops. They will join forces with the MCU's heroes to battle a new villain played by the returning Robert Downey Jr.—Doctor Doom.
Stephen McFeely, screenwriter for the second and third "Captain America" films as well as "Avengers: Infinity War" and "Endgame," penned the script. Michael Waldron, who wrote for the first season of "Loki" and "Doctor Strange in the Multiverse of Madness," also contributed to the screenplay. The film is scheduled to hit theaters on December 18 of this year.