Marvel could probably announce a movie about Ant-Man’s ant-farm and we’d still find ourselves dissecting it for Easter eggs. And now, the buzz is back with whispers of five unannounced actors currently filming for Avengers: Doomsday. Five. Unannounced. Actors.
While Marvel Studios has yet to comment on these claims, the speculation surrounding who these actors might be is gaining serious traction online. Marvel is no stranger to keeping secrets. The studio has built an empire on surprise reveals, shocking cameos, and razor-sharp marketing strategies designed to keep fans guessing. This latest rumor feels right in line with their usual playbook.
Five unannounced Marvel actors are filming ‘AVENGERS: DOOMSDAY’. pic.twitter.com/IcVenP25DP
— Marvel Updates (@marvel_updat3s) July 4, 2025
With Avengers: Doomsday serving as a key installment in the Multiverse Saga, the inclusion of unannounced actors could mean several things. The prevailing theory? Legacy characters from Fox’s X-Men or Sony’s Spider-Man franchises might be making an appearance. Hugh Jackman’s Wolverine is the most obvious contender, especially since he’s confirmed to return in Deadpool 3. Jackman popping up in Avengers: Doomsday would be a huge win for Marvel, further cementing the multiverse as a platform for fan-favorite characters. Similarly, Tobey Maguire’s Spider-Man—who made a triumphant return in No Way Home—could swing back into action.
Another possibility is that these actors could be portraying new versions of iconic Marvel characters. With The Fantastic Four set to debut in the MCU soon, there’s a chance that one of these mystery actors could be playing Reed Richards, Sue Storm, or another member of Marvel’s First Family. Rumors of Adam Driver as Reed Richards or Margot Robbie as Sue Storm have been circulating for months.
Could one of them already be filming for Doomsday? And then there’s the wildcard option: brand-new characters. Marvel has a habit of pulling lesser-known comic book heroes and villains into the spotlight, so it’s entirely possible that we’re looking at the live-action debut of someone like Nova, the Silver Surfer, or even a version of Galactus.
While the identities of the rumored five actors remain a mystery, Marvel has already confirmed several key players for Avengers: Doomsday. The movie will feature a mix of familiar faces and new additions from across the MCU’s sprawling roster. Sam Wilson’s Captain America (played by Anthony Mackie) is set to take a leading role, marking his first major appearance as the team’s leader since taking up the mantle in The Falcon and the Winter Soldier. Bucky Barnes (Sebastian Stan) will also return, and their dynamic as former allies of Steve Rogers could play a significant part in grounding the Avengers’ leadership amidst the chaos of the multiverse.
The cast will also include characters from Thunderbolts and The Fantastic Four: First Steps. While the Fantastic Four’s involvement seems like a natural fit given the introduction of Doctor Doom as the MCU’s next major villain, the inclusion of Thunderbolts characters is more surprising. This antihero team—featuring characters like Yelena Belova (Florence Pugh) and Red Guardian (David Harbour)—doesn’t seem like the most obvious choice for a multiverse-level conflict. However, Marvel may be using Doomsday as a way to further integrate the Thunderbolts into the larger MCU narrative.
