Wild new theory claims Doctor Doom actually showed up in Avengers: Age of Ultron, way before his official MCU debut! Fans are dissecting old scenes, pointing out a green-hooded figure and mysterious castles in Thor’s vision. The biggest twist? Some believe Tony Stark’s dark future was actually a hint at him becoming Doom. If Marvel retcons this, Phase 2 could look totally different! #Entertainment #Comics #DoctorDoom