In 1982, Magneto concludes he is Wanda and
Although Magneto was believed for years to be the father of Scarlet Witch and Quicksilver, it was revealed that they are not really related.
But it wasn't long before Wanda and her brother discovered the true secret origin of their powers, and that Magneto was never actually their father! While Pietro was made a speedster, Wanda was an experimental mage empowered by the High Evolutionary, born to Romani parents and altered shortly after their birth.
But these two long-lost twin brothers are unusual even among the mutant community. They're the sons of Scarlet Witch and Vision, making them members of quite possibly the most convoluted family tree in the entire Marvel Universe.
In Marvel Comics, Strange's third eye is a manifestation of the Eye of Agamotto, which was introduced in the MCU as a containment vessel for the Time Stone. In the comics, among its powers is a truth-revealing light (which would come in handy when those pesky Skrulls show up in the MCU's upcoming “Secret Invasion”).
In the main MCU timeline, Scarlet Witch doesn't physically give birth to her kids, but she does create them as part of the illusion about what her and Vision's lives could have been.
Pietro Lensherr, a.k.a. Quicksilver, is the son of mutant supremacist Magneto and twin brother of Wanda. Magneto abandoned their human mother when the twins were children, taking them with him as he founded the Brotherhood of Mutants with Charles Xavier, whom the children regarded as an uncle.
Who is Pietro Maximoff, aka Quicksilver? Pietro is Wanda's twin brother. The two were born in Sokovia, a small, made-up Eastern European country.
"X-Men Millennial Visions" #2001, the one-shot series, offers us a glimpse into a twisted future where our favorite heroes are radically different. In "Brother(hoods) Keeper," we discover that Magneto and Rogue Darkholme, a combination of Rogue and Mystique, had a child named Plague.
While Captain Marvel received her powers after being exposed to an Infinity Stone, WandaVision reveals that Wanda's exposure to the Mind Stone amplified powers she was unaware she had already possessed. As the Scarlet Witch, Wanda has had the ability to use Chaos Magic since birth.
She was shown to have powers to affect and control animal behavior, allowing her to befriend the wildlife outside her home.
As it stands, Magneto is known to have fathered two children: Anya, with his wife Magda, both of whom were killed before the child's mutant powers would have manifested, and Polaris, with a woman named Suzanna with whom Magneto had a brief affair.
In 1982, Magneto concludes he is Wanda and Pietro's father. In 2014, the AXIS crossover revealed Pietro and Wanda are not related to Magneto. In 2015, the twins discover they are not mutants and their superhuman traits are the result of the High Evolutionary's experiments.
Shortly after Doctor Strange 2 debuted, news revealed that a scene was actually filmed with Michael Fassbender's Magneto, but it was removed from the final cut of the film.
So, the basics: Quicksilver is the superhero nickname of Pietro Maximoff, twin brother of Wanda Maximoff. In Marvel Comics, Wanda and Pietro's origins are oddly complex for superheroes, with the origins tweaked and refined over the years.
In addition to Wanda and Pietro, Magneto also has another daughter from an affair: Lorna Dane, AKA Polaris. These three children represent different aspects of Magneto. Aside from an uncanny father-son resemblance, Pietro shares his father's devotion to family and his hotheadedness.
She was born a human with the affinity to control magic, allowing her to use the witchcraft she was born with and that her powers were never gave to her by the High Evolutionary as it was believed rather, he had altered her so Wanda is more receptive to magical energy.
Agatha explains that Wanda's moniker of "Scarlet Witch" is not just a nickname, but a legacy of magical people in her family that have all used the "Scarlet Witch" title. All this time, Wanda believed the name came to her fully formed, but in reality, it was part of her inheritance.
Harkness took possession of the Darkhold and used it to amplify her magical powers. Eventually, the Darkhold corrupted Harkness's mind and turned her fingertips black.
Elizabeth Olsen explained in the interview with Marvel that Wanda from Earth-616 was leagues stronger than the Earth-838 version but was held back because she was still tethered to her physical body, so it took a great toll on her to fully control a character from another universe.
Though born a witch, Wanda was unaware of her powers. In Avengers: Age of Ultron, she had her powers augmented by the Mind Stone and learned to deal with them in subsequent films. Strange, on the other hand, wasn't born with magic powers but had the advantage of being trained by the Ancient One.