Overview
- Robert Downey Jr.’s Instagram posts from the Doomsday set feature him reading West Coast Avengers #35, Marvel Superheroes Secret Wars, and Iron Man: Legacy of Doom, prompting fans to speculate on upcoming team-ups and multiverse story arcs.
- Director Matt Shakman confirmed that Downey’s cloaked mid-credits cameo in The Fantastic Four: First Steps is his official debut as Doctor Doom in the MCU.
- Production remains underway under Anthony and Joe Russo, with writer Stephen McFeely still refining the script even as scenes are filmed.
- Marvel Studios president Kevin Feige has highlighted daily “plus-ing” on set, and cast members including Anthony Mackie have praised Downey’s return to the franchise.
- Avengers: Doomsday is slated for a December 18, 2026 release, positioning it as a cornerstone of MCU Phase 6.