Wild theory alert: some fans are convinced Doctor Doom actually appeared in Age of Ultron, years before his official MCU debut! The debate is heating up after eagle-eyed viewers spotted a green-hooded figure in Thor’s vision and possible Doom references in Loki. If true, this retcon would mean Doom’s been pulling strings since Phase 2. Is Marvel setting up a massive twist for Avengers: Doomsday? The fandom is divided! #Entertainment #Comics #DoctorDoom