Wanda Maximoff is a fictional character primarily portrayed by Elizabeth Olsen in the Marvel Cinematic Universe (MCU) media franchise based on the Marvel Comics character of the same name. Wanda is initially depicted as a Sokovian refugee who, along with her twin brother Pietro, volunteers to be experimented on by Hydra. The Mind Stone amplifies her natural telekinetic and energy manipulation abilities known as Chaos magic. Wanda initially comes into conflict with the Avengers but later joins them and becomes the team's most powerful member. She forms a close bond with Clint Barton and forms friendships with Steve Rogers, Natasha Romanoff, Sam Wilson, Bucky Barnes, and Scott Lang. She eventually develops a romantic relationship with Vision, and after being restored to life, Wanda visits Westview, where she and Vision had planned to live together. She becomes mentally unstable and unknowingly uses her abilities to trap the entire town in a false reality she creates to her liking. She then befriends Monica Rambeau, however, her actions bring her into conflict with S.W.O.R.D. and Agatha Harkness, causing her to eventually free the town and tap into her latent powers and her ancient prophesied identity as the Scarlet Witch. She uses the Darkhold to locate alternate reality versions of her children, Billy and Tommy Maximoff, whom she created in the false reality. Corrupted by the Darkhold, she seeks to absorb the multiverse transportation powers of America Chavez, coming into conflict with former allies Stephen Strange, Wong and their allies who try to protect Chavez; and possesses her counterpart from Earth-838. After causing devastation and inadvertently frightening the alternate reality selves of her children, a guilt-ridden Wanda collapses Mount Wundagore on herself, destroying all copies of the Darkhold across the multiverse in the process. Wanda has become a central character within the MCU, having appeared in six films as of 2023. She also has a lead role in the miniseries WandaVision (2021). Alternate versions of Wanda appear in the animated series What If...? (2021) and in the film Doctor Strange in the Multiverse of Madness (2022). Olsen's portrayal of the character has been well-received and she has earned a number of accolades for her performance, notably being nominated for a Primetime Emmy Award in 2021, and a Golden Globe Award in 2022. From Wikipedia
