1. they Ratner it and they just act like they aren't related and just use the characters unconnected.
2. 70's Fassbender bangs some bar whore in a one night stand and then Gandalf somehow reunites with his kids in the present.
anyways, those are my theories.
.....
The children of Magneto go a LOOONG way to shaping the person Eric becomes.
Wanda and Pietro Maximoff Are the children of Eric Lensher (Magneto), and His wife Magda. he TRUELY loved Magda, so I hope they don't **** all over that. They Met In Auschwitz, And Escaped together.
They had a Daughter together named Anya, whom dies in a fire at an inn near Wundagore Mt. While the inn is burning, Eric is getting arresseted on charges of assult. He had lost his temper earlier. He screams for someone to help his daughter while she burns to death. Anya eventualy hurls herslef from a window to escape teh flames... but still dies. This causes Magneto to break.. and his powers rage. he uses them to wreak havoc amongs teh men arresting him, and the crowd. killing people, and screaming that they deserve it for not helping his child.
You see, at this time, Magneto dosn't really have controll of his powers, nor is really all that aware of them.. untill now.
Magda is terrified of what she sees, claiming He's not tehe man she married, etc etc. Not becuase of the powers, but becuase of the sheer brutality of his assult.
Magda runs off, abandoning Eric, as a broken man. She was already pregnant at this time, AND had not told him. She flees, eventualy ending up on Wondugore Mt, where she has the twins, and raises them under what is believed to be her Maiden name, Maximoff.
YEARS later, MAgneto does have a 1 night stand with another woman. Though this is long after he already is Magneto, and Polaris is the offspring from that union.