(Warning: This post contains potential spoilers for Marvel’s Avengers: Doomsday.)
Sophia Di Martino is reprising her role as Sylvie in Marvel’s Avengers: Doomsday.
According to insider reports, Di Martino was on the set of Avengers: Doomsday, filming scenes alongside the Avengers, the Fantastic Four, and the X‑Men. She is the one who guides and assists them with matters related to the Time Variance Authority (TVA), the Void, and Loki.
Also, other characters from the Loki storyline are expected to make brief appearances when the story shifts into the TVA. But Di Martino is likely the one who will take on a more major role.
On Instagram, Di Martino shared (and later removed) a post teasing her possible role in Avengers: Doomsday. Reports also claim that Di Martino and her stunt double, Sarah Irwin, were seen in the UK, where production is taking place. As of now, Marvel Studios has not confirmed Sylvie’s role or appearances by other Loki cast members, aside from Tom Hiddleston.
Most recently, a BTS clip from Avengers: Doomsday shared by Chris Hemsworth‘s stunt double revealed the Temporal Loom entrance at the TVA. It has also been confirmed that a major scene in the movie was shot in the Void.
In Avengers: Doomsday, Shuri detects the Incursions—Earth-616 and Earth-10005 are colliding. She shares this discovery via hologram with Sam Wilson, Wong, Bruce Banner, and Carol Danvers. Meanwhile, the Fantastic Four arrive on Earth-616 and have their first encounter with the Thunderbolts/New Avengers. Reed reveals that Doctor Doom has kidnapped his son, Franklin, and that Galactus had previously targeted Franklin because of his powers. Bucky then seeks advice from Sam on how to deal with Doom. Shuri gathers Sam, Wong, Banner, Carol, Thor, Bucky, Yelena, M’Baku, Namor, and the Fantastic Four. She detects a familiar energy signature, which is revealed to be Monica Rambeau. Reed also confirms that Franklin and Doctor Doom are in the X-Men universe. To stop the Incursion and save Earth-616, a three-part mission is formed. Wong calls America Chavez to open a portal.
Mission Team: Sam, Thor, Carol, Shang-Chi, Ant-Man, She-Hulk, Yelena, Bucky, Bob, Banner, Shuri, M’Baku, Namor, and the Fantastic Four.
Earth Defenders: John Walker, Ghost, Red Guardian, Wakandans, Talokan, and Wong’s sorcerers.
Directed by Russo brothers from a screenplay by their longtime collaborator, Stephen McFeely. Newton Thomas Sigel (Bohemian Rhapsody, X-Men: Days of Future Past) will be the cinematographer.
In Avengers: Doomsday, the MCU begins the beginning of the end. As the multiverse nears total collapse, the Avengers assemble to face their greatest challenge yet—incursions, catastrophic collisions between realities that could destroy the entire multiverse. Earth’s Mightiest Heroes must race against time to save their reality while confronting the powerful figure behind it all—Victor Von Doom (Robert Downey Jr.).
The official cast members of the film include Downey Jr. as Doctor Doom, Paul Rudd as Ant-Man, Simu Liu as Shang-Chi, Hiddleston as Loki, Florence Pugh as Yelena Belova, Danny Ramirez as Falcon, Sebastian Stan as Bucky Barnes, Winston Duke as M’Baku, Hemsworth as Thor, Letitia Wright as Black Panther, Tenoch Huerta Mejía as Namor, Anthony Mackie as Captain America, David Harbour as Red Guardian, Wyatt Russell as U.S. Agent, and Hannah John-Kamen as Ghost. Ian McKellen as Magneto, Patrick Stewart as Professor X, Rebecca Romijn as Mystique, James Marsden as Cyclops, Kelsey Grammer as Beast, Cumming as Nightcrawler, and Channing Tatum as Gambit. Pedro Pascal as Reed Richards (Mr. Fantastic), Vanessa Kirby as Sue Storm (Invisible Woman), Joseph Quinn as Johnny Storm (Human Torch), Ebon Moss-Bachrach as Ben Grimm (The Thing), and Lewis Pullman as Sentry.
Produced by Kevin Feige, Louis D’Esposito, and Russo Brothers will produce through their AGBO banner.
The Fantastic Four: First Steps is now playing in theaters, and Avengers: Doomsday will be released in theaters and IMAX across the United States on December 18, 2026.
Source: James Mack/X
