By The Avengers: Doomsday trailer is finally here, and Marvel fans everywhere are hitting pause every few seconds trying to catch every reference. Directed by Joe and Anthony Russo and set to hit theaters on December 18, 2026, this trailer packs in more comic-book callbacks, MCU continuity nods, and blink-and-you’ll-miss-it Easter eggs than almost any Marvel trailer before it. Here’s a full breakdown of everything hidden in the Avengers: Doomsday trailer footage.
Robert Downey Jr.’s Doctor Doom Finally Revealed
The biggest headline from the trailer is our first real look — and listen — at Robert Downey Jr. as Doctor Doom. Hidden behind the character’s signature green hooded cloak and metal mask, Downey gives Doom a distinct, menacing voice with a noticeable Eastern European accent, a subtle nod to Victor Von Doom’s comic-book origins as the ruler of Latveria. It’s a deliberate choice that separates him completely from Tony Stark and signals just how seriously Marvel is treating this villain. You can read more about Downey’s casting on Marvel’s official site or check his full credits on IMDb.
Three Earths Colliding at Avengers Tower
Eagle-eyed fans spotted something huge in a wide shot inside a renovated Avengers Tower: three connected globes visible in the background. This is a direct visual reference to the Marvel Comics “incursion” storyline, where multiple versions of Earth collide and threaten to destroy each other — essentially confirming the multiversal stakes at the heart of the Doomsday plot.
(For more background on this storyline, see our complete MCU Multiverse Saga guide.)
Thor Corrects His Infinity War Mistake
One of the most emotionally loaded moments in the Avengers: Doomsday trailer has Thor aiming Stormbreaker straight at Doom’s head, deliberately echoing — and fixing — his infamous decision in Avengers: Infinity War to strike Thanos in the chest instead of the head. This time, Doom doesn’t even flinch, casually catching the weapon with one hand, immediately establishing him as one of the most powerful villains the MCU has ever introduced.
Steve Rogers Returns, Nomad Style
Chris Evans is back as Steve Rogers, and the trailer leans hard into nostalgia. His entrance mirrors his bearded, long-haired “Nomad” look and dramatic reveal from Infinity War, and he’s shown lifting Mjolnir once again — a callback to Endgame that’s sure to give longtime fans chills. Catch up on his surprise return in our Captain America casting news roundup.
Loki’s TVA Card and a Secret Visit to Steve
Tom Hiddleston’s Loki appears holding a TVA identification card now marked with the multiversal tree symbol, tying his Disney+ series sacrifice directly into the Doomsday storyline. Sharp-eyed viewers also noticed the curtains behind him match the home where Steve and Peggy danced at the end of Endgame, hinting that Loki may have paid Steve a visit to warn him about what’s coming.
Namor, Sue Storm, and the Fantastic Four Connection
In a jaw-dropping visual, Namor is shown parting the ocean floor while Sue Storm uses her force fields to hold back walls of water, connecting the Fantastic Four directly into the unfolding crisis. Namor also debuts a new black bodysuit resembling his classic “moisture suit” from the comics, a deep-cut reference for longtime readers.
X-Men Officially Enter the MCU
This trailer marks a landmark moment for Marvel: the live-action MCU debut of the X-Men. Patrick Stewart’s Professor X delivers an ominous warning about a coming threat, Ian McKellen’s Magneto makes an appearance, and James Marsden’s Cyclops fires his optic blast for the first time in this universe. It’s the clearest confirmation yet that Fox’s mutants are merging with the mainline MCU timeline.
New Costumes and Surprise Team-Ups
- Cassie Lang appears with comic-accurate blonde hair, hinting at a bigger role after Ant-Man and the Wasp: Quantumania.
- Mystique, played by Rebecca Romijn, wears her first comic-accurate costume and is even shown shapeshifting into Yelena, teasing a Florence Pugh-vs-Florence Pugh showdown.
- Shang-Chi is shown trading blows with Channing Tatum’s Gambit, a surprising and fun crossover moment.
- The New Avengers — including Yelena, Bucky Barnes, Joaquín Torres’ Falcon, and an Ant-Man — assemble inside Avengers Tower under a freshly rebranded “A” logo.
What the Avengers: Doomsday Trailer Means for the MCU
Between the incursion imagery, the X-Men’s arrival, and Doctor Doom’s comic-accurate menace, the Avengers: Doomsday trailer strongly suggests a multiverse-collapsing event on a scale even bigger than Endgame. With this many Easter eggs packed into a single trailer, it’s clear Marvel Studios is setting up one of the most ambitious crossover events in the franchise’s history.
Avengers: Doomsday hits theaters on December 18, 2026.
Want the full scene-by-scene breakdown too? Check out our Avengers: Doomsday trailer breakdown for everything else revealed, plus our Marvel Phase 6 release schedule for what’s coming next.