Avengers: Doomsday (December 18, 2026) is bringing back more beloved characters than any Marvel film before it — 28 confirmed heroes spanning the MCU, the Fox X-Men universe, and the new Fantastic Four. But not all returns are equal. Some of these characters are walking back onto the screen after years away, carrying the weight of storylines left unfinished, promises left unkept, and fanbases that never stopped asking for more.
These are the five returns that matter most.
5. Cyclops — James Marsden
The Fox X-Men films never knew what to do with Scott Summers. James Marsden played the character across three films and was famously killed off in X-Men: The Last Stand with almost no ceremony — a decision so widely criticized it became its own cultural shorthand for wasted potential. Cyclops was the field leader of the X-Men in the comics, the tactical heart of the team, and the films treated him as set dressing for Logan’s love triangle.
His return in Doomsday is a genuine second chance. The film has the opportunity to show the version of Cyclops that the Fox era never delivered: a leader under pressure, a tactician in a fight that demands every hero at their best. If the Russo Brothers give Marsden thirty minutes of actual screen time and let Scott be the man in charge of something, it will be more than the character got across three films combined.
4. Thor — Chris Hemsworth
Thor is the only character confirmed to appear in all five Avengers films. That statistic alone tells you something about how the character has been positioned — not as a lead, exactly, but as the spine that connects every chapter. Love and Thunder was a divisive entry that left many fans uncertain about where Thor stood creatively. Doomsday is the reset.
The CinemaCon trailer made the stakes immediately clear: Thor and Steve Rogers reuniting to face Doctor Doom together. It is the kind of pairing that requires no setup and no explanation. Two of the most recognizable heroes in cinema history, side by side, against the most dangerous villain the MCU has ever presented. Hemsworth has always been at his best when the material treats Thor as genuinely powerful rather than a punchline, and Doomsday appears to be doing exactly that.
3. Professor X — Patrick Stewart
Patrick Stewart defined Charles Xavier for an entire generation. His version of the character — dignified, wounded, brilliant, occasionally wrong in ways that cost people dearly — set the standard for how to play a mentor figure in a superhero film. His death in The Last Stand (the same film that killed Cyclops) was undone in the post-credits scene of Days of Future Past, but the Fox era ended without giving him a proper final chapter.
His brief appearance in Doctor Strange in the Multiverse of Madness (2022) was a tease. Doomsday is the real thing: the original Professor X standing alongside heroes from a universe he has never met, in a conflict that demands the kind of moral authority Stewart has always brought to the role. There is no actor in the history of Marvel films more capable of making an audience feel the weight of a scene simply by sitting still and speaking.
2. Gambit — Channing Tatum
No return on this list required more persistence than Channing Tatum’s Gambit. He spent over a decade trying to get a solo Gambit film made, surviving multiple development cycles, studio ownership changes, and the complete collapse of the Fox X-Men franchise. By the time Disney acquired Fox and the MCU multiverse became the mechanism for bringing mutants into canon, Tatum’s Gambit project had been publicly buried for years.
And then the CinemaCon trailer showed Gambit fighting Shang-Chi. The Ragin’ Cajun, kinetic card charging and all, actually on screen. Tatum’s investment in the character is genuine — he has talked about Remy LeBeau with the kind of detailed affection that usually only comes from someone who has spent years living with a role in their head. Fans have waited longer for this specific return than almost any character in superhero film history. Whether Doomsday gives him room to breathe or uses him as a crowd-pleasing cameo, the fact that it is happening at all feels improbable enough to qualify as a small miracle.
1. Steve Rogers — Chris Evans
There is no close second.
Steve Rogers said goodbye in Endgame. He chose to stay in the past, live his life, and grow old with Peggy Carter. It was a earned ending — one of the most emotionally complete character arcs in the MCU — and the moment he handed the shield to Sam Wilson felt like genuine closure. Chris Evans said repeatedly that he was done. The character was done. The conversation was over.
Then the teaser dropped at CinemaCon, Thor and Steve Rogers stood together on screen, and the internet briefly lost its mind.
Evans has been clear about why he agreed to return: the story needed the moral anchor that only Steve provides. In a film built around a villain who has toppled every institution the Avengers once trusted, there is a specific kind of statement being made by bringing back the man who was always the team’s conscience. Steve Rogers does not return because the plot required a familiar face. He returns because Doomsday, at its core, appears to be a film about what it costs to stand for something when every system around you has failed.
That is Steve Rogers’ entire biography in one sentence. Of course he came back.
The cast billing confirms he is second only to Robert Downey Jr. This is not a cameo. This is a lead role. And the fact that Evans — who left on his own terms, who did not need to return — chose to means this version of Steve Rogers is going to mean something.
Avengers: Doomsday releases December 18, 2026.
Everything we recommend, curated in one place — from anime merch to gaming gear and snacks.
