A new trailer for Avengers: Doomsday reveals a major Marvel Cinematic Universe return — and reignites an Endgame debate that even the writers and directors couldn’t agree on. Avengers: Doomsday is set to hit theaters on December 18, 2026, bringing Robert Downey Jr. back to the MCU as the infamous Doctor Doom. And he’s not […] The post Avengers: Doomsday’s New Trailer Revives Endgame’s Biggest Unresolved Argument (That the Directors & Writers Couldn’t Agree On) appeared first on ComicBook.com .