[#item_full_content] Doctor Doom may be the MCU’s Big Bad for both Avengers: Doomsday and Avengers: Secret Wars, but the former has already given us the answers as to how the heroes will defeat him. 
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Marvel has already confirmed who defeats Doctor Doom in Avengers: Doomsday (and it’s not Thor)
ByMarvelComicBooks.com
August 28, 2026