Warning: Contains spoilers for Doctor Strange in the Multiverse of Madness.
After being cut from the original Doctor Strange film, Doctor Strange in the Multiverse of Madness has finally told the tragic story of Stephen Strange's sister, Donna. The original film was meant to explore that aspect of Strange's past, but it was ultimately cut from the final product. It wasn't clear if the films would ever find a way to bring in the backstory of the comics, but thanks to Multiverse of Madness, it's finally become canon to the MCU.
Doctor Strange followed renowned neurosurgeon Stephen Strange. He goes on a journey to find the mysterious Ancient One with a view to recovering from a car crash that left him unable to keep operating. There, he is drawn into the world of the mystic arts, becoming a powerful sorcerer who saves the world from the ruler of the Dark Dimension, Dormammu. Like many other Marvel films, Doctor Strange was an origin story as it told how Stephen Strange became a sorcerer but didn’t show anything about his life before he became a neurosurgeon.
Related: Doctor Strange In The Multiverse Of Madness Ending Explained (In Detail)
The original film included a scene showing a key moment in Stephen Strange’s life, and one that would have introduced his sister, Donna, but was ultimately cut from the final product. However, she returned to Strange’s backstory at a pivotal moment in Doctor Strange in the Multiverse of Madness via a conversation between two Strange variants.
The first Doctor Strange movie cut a deleted scene that saw Donna Strange die in Stephen's past. In the comics, Stephen Strange has two younger siblings: Donna and Victor. Victor died in a car accident, and overcome with guilt, Strange attempted to
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