A new report reveals why Thor and Steve Rogers team up in Avengers: Doomsday. It hints at a side mission involving a familiar figure with ties to the multiverse.

Thor and Steve said to find Loki in Avengers: Doomsday
In Avengers: Doomsday, Thor and Steve Rogers are on a side quest to find Loki. The scoop comes from @MyTimeToShineHello, who stated, “In Avengers Doomsday, Thor and Steve are on a side quest to find Loki.” This subplot sets them apart from the central Avengers storyline. Tom Hiddleston is confirmed to return as Loki.
The same source also revealed, “Thor and Steve are already on the Fantastic Four’s ship with Doom before it arrives in the MCU.” This positions them alongside Doctor Doom early in the narrative. It suggests their involvement in a pre-main-event arc tied to Loki’s location.
Chris Hemsworth and Chris Evans return as Thor and Steve, while Robert Downey Jr. portrays a version of Victor Von Doom. A report states that this version of Doom commands “multiple masked sidekicks,” both male and female. The sidekicks’ identities remain unclear. Sources believe they are Variants or followers, with some possibly unmasking as characters like Scarlet Witch or Tony Stark.
The ensemble cast features returning MCU actors: Anthony Mackie, Winston Duke, Sebastian Stan, Letitia Wright, Paul Rudd, and Tom Hiddleston. New additions include Wyatt Russell, Simu Liu, Florence Pugh, Danny Ramirez, David Harbour, Hannah John-Kamen, Tenoch Huerta Mejia, and Lewis Pullman. Returning supporting characters include India Rose Hemsworth as Love, Mabel Cadena as Namora, and Hayley Atwell as Peggy Carter.
The Russo Brothers direct Avengers: Doomsday, with Stephen McFeely and Michael Waldron writing the script. Marvel plans to release the film on December 18, 2026, followed by Avengers: Secret Wars on December 17, 2027. The story explores multiversal threats, character Variants, and the rise of Doctor Doom.
