Will Hulk be in 'Avengers: Doomsday'? Russo Brothers Explain

The Hulk post-credits scene in Avengers: Endgame Encore continues to generate a question among Marvel fans: could he appear in Avengers: Doomsday? The moment puts Mark Ruffalo's character face-to-face with the villain played by Robert Downey Jr., who returns to the MCU in a new version. 

Without confirming the hero's participation, the Russo brothers commented on the speculation.

In an interview with Empire, Joe Russo stated that Bruce Banner is connected to the plot involving Doctor Doom, but avoided confirming his presence in the film. "I think we can say that [Banner] is certainly involved in the story revolving around Doom. We're not going to confirm or deny his appearance in Doomsday," he declared.

Anthony Russo then added: "The most we can say is that there are characters and actors who haven't been announced yet, but who are part of Doomsday. "

Everything you need to know about Avengers: Doomsday

The villain of the fifth Avengers movie will be Doctor Doom, played by Robert Downey Jr., the actor who portrayed the legendary Iron Man in the MCU's Infinity Saga and now takes on the role of the antagonist. Avengers: Doomsday will be directed by brothers Anthony and Joe Russo (Endgame), with a script by Michael Waldron (Loki) and Stephen McFreely (Endgame).

Marvel has already confirmed the main cast members for the new film, in one of the biggest MCU star reunions ever assembled. Returning from previous Avengers films are: Chris Evans as Steve Rogers, Chris Hemsworth as Thor, Anthony Mackie as Captain America, Sebastian Stan as the Winter Soldier, Paul Rudd as Ant-Man, Winston Duke as M'Baku, and Letitia Wright as Shuri/Black Panther.

Among characters introduced after Avengers: Endgame — in phases 4 and 5 of the MCU — we have Simu Liu as Shang-Chi, Danny Ramirez as Falcon, the entire new Fantastic Four (Pedro Pascal as Mister Fantastic, Vanessa Kirby as Invisible Woman, Joseph Quinn as Human Torch, and Ebon Moss-Bachrach as the Thing), almost the entire cast of Thunderbolts* (Florence Pugh as Yelena, Wyatt Russell as U.S. Agent, David Harbour as Red Guardian, Hanah John-Kamen as Ghost, and Lewis Pullman as Bob, the Sentry), and Tenoch Huerta as Namor.

The film also features the return of the classic X-Men from the old Fox movies, including Patrick Stewart as Professor X, Ian McKellen as Magneto, James Marsden as Cyclops, Alan Cumming as Nightcrawler, Kelsey Grammer as Beast, Rebecca Romijn as Mystique, and, introduced in Deadpool & Wolverine, Channing Tatum as Gambit.

Avengers: Doomsday opens on December 18, 2026.