Scarlet Witch (born Wanda Maximoff) is a mutant and sister of Quicksilver.
- Erik Lehnsherr / Magneto - Father
- Ms. Maximoff - Mother
- Peter Maximoff / Quicksilver - Twin-Brother
- Unnamed Sister - Half-Sister
- Lorna Dane / Polaris - Half-Sister
- In the comics, Wanda Maximoff is the twin sister of Peter Maximoff/Quicksilver and both were members of the Brotherhood of Mutants before joining the Avengers. Despite being mentioned in X2: X-Men United as a mutant on William Stryker's computer, she was neither mentioned or seen in X-Men: Days of Future Past. However, she is mentioned in the Rogue Cut.
- Due to the rights to the Maximoff twins being shared by both Marvel Studios/Disney and 20th Century Fox, Wanda has already appeared in the Marvel Cinematic Universe portrayed by Elizabeth Olsen. However because of the divide between the two studios this incarnation of Wanda is understandably different from the MCU incarnation of the character.