Overview

• Robert Downey Jr.’s casting as Doctor Doom is confirmed, including a brief on-screen tease in The Fantastic Four: First Steps.
• ComicBook.com identifies six prior MCU entries it says could set up incursions that pull Doom into Avengers: Doomsday.
• The outlet characterizes Doom as a possible antihero seeking to stabilize reality, emphasizing that this remains speculative before the 2026 film.
• It also notes that Kang variants are unlikely in Doomsday after Jonathan Majors’ arrest, conviction and firing from Marvel Studios.
• FandomWire points to Tony Stark scenes across earlier films as foreshadowing Downey’s Doom, citing parallels in intellect, armor, autonomy and mentorship dynamics.