Scarlet Witch is a fictional superhero appearing in American comic books published by Marvel Comics. The character was created by writer Stan Lee and artist Jack Kirby, first appearing in The X-Men #4 (March 1964) in the Silver Age of Comic Books. She is first portrayed as a supervillain along with her twin brother Quicksilver as a founding member of the Brotherhood of Mutants. In most depictions she is portrayed as a mutant, a member of a fictional subspecies of humans born with superhuman abilities. Scarlet Witch possesses abilities to alter reality in unspecified ways and is a powerful sorceress.
Depicted as the children of golden age superhero Whizzer earlier on, Scarlet Witch and Quicksilver are later established to be the unknown offspring of supervillain Magneto. Born to Magneto's estranged wife in Transia, Scarlet Witch and her brother are left in the care of their adoptive Romani parents and she is raised as Wanda Maximoff. In a much later retcon it is revealed that Quicksilver and she are not mutants but were kidnapped and used as genetic experimentations by the High Evolutionary then misled to believe Magneto was their father. Scarlet Witch is later depicted as a regular member of the Avengers superhero team. She also becomes the wife of fellow superhero and teammate Vision.
Along with starring in two self-titled limited series of her own, the character appears in animated films, television series, arcade and video games as well as other Marvel-related merchandise. Scarlet Witch has been portrayed by Elizabeth Olsen in a number of films from the Marvel Cinematic Universe.