Wanda Maximoff is a 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, known as Chaos magic, amplifies her natural telekinetic and energy manipulation abilities. Wanda initially conflicts with the Avengers but later joins them to defeat Ultron, becoming one of their most powerful members.