Here's why Benedict Cumberbatch's cameo as Doctor Strange was cancelled in 'WandaVision' Elizabeth Olsen is set to reprise her role as Wanda Maximoff/Scarlet Witch in 'Doctor Strange in the Multiverse of Madness'. Share The climax of the series of WandaVision sets the beginning of Doctor Strange in the Multiverse of Madness. Thus, Elizabeth Olsen will be reprising her role as Wanda Maximoff/Scarlet Witch in the film starring Benedict Cumberbatch in the titular role. The Marvel movie is touted to be the first one of the horror genre for MCU. Meanwhile, reports were making the rounds that Benedict will be making a special appearance towards the end of