Overview
- The Russos’ AGBO posted a TikTok showing employees with Doctor Doom and Iron Man masks, with full costumes for Doom, Sue Storm, and Franklin Richards visible in the background.
 - Marvel’s official Avengers: Doomsday cast list names Robert Downey Jr. as Doctor Doom, marking his return to the MCU in a new role.
 - Coverage notes active fan theories that Downey’s Doom could be a Tony Stark variant and that a Secret Wars–style dynamic may be in play, but none of these story ideas are confirmed.
 - Commentators link the costume grouping to prior MCU teases involving those characters, interpreting the selection as a deliberate nod rather than a random display.
 - Avengers: Doomsday is slated for December 18, 2026, with Avengers: Secret Wars on December 17, 2027, both directed by Joe and Anthony Russo as production continues.