[#item_full_content] As the Marvel Cinematic Universe rumor mill continues to spin, word on the street is that Avengers: Doomsday might feature an Iron Man vs. Doctor Doom fight in its final act. When Marvel Studios revealed that Downey would return to the MCU as Doctor Doom, it caught a lot of us off guard. The 
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IRON MAN Rumored To Return in AVENGERS: DOOMSDAY For a Showdown With Doctor Doom
ByMarvelComicBooks.com
March 2, 2026