This "leak" features promotional images for the movie depicting Doctor Doom's Latverian Witches, as well as another masked character who could be one of Earth's Mightiest Heroes. Though it hasn't been confirmed whether these promotional shots are legitimate, they hint at Boris being none other than Doctor Strange. Benedict Cumberbatch as Dr. Stephen Strange in Marvel Studios' DOCTOR STRANGE IN THE MULTIVERSE OF MADNESS. Avengers: Doomsday hints at Doctor Strange being a villainDespite being a major figure in the Multiverse Saga, Doctor Strange has been noticeably absent from Doomsday’s cast. Benedict Cumberbatch as Doctor Stephen Strange in Marvel Studios' DOCTOR STRANGE IN THE MULTIVERSE OF MADNESS.