Elizabeth Olsen's Scarlet Witch cannot return in the Marvel Cinematic Universe's Phase 5, as Marvel Studios' last four movie releases have made her return impossible. Wanda Maximoff has had quite the journey in the MCU, debuting as a villain on Ultron's side, moving over to the Avengers, and losing her brother, Pietro, all in her first major MCU role in Avengers: Age of Ultron. After that, Wanda's MCU journey would continue to be filled with traumatic events, which reached a boiling point when Vision was killed by Thanos in Avengers: Infinity War and the Scarlet Witch decided to create her own reality out of grief in Disney+'s WandaVision.

Scarlet Witch then became embroiled in another villain arc after she let go of her twin sons — Billy and Tommy — to restore reality at the end of WandaVision. Doctor Strange in the Multiverse of Madness saw the Scarlet Witch go on...