Magneto

Magneto is a Mutant villain who appears in Marvel Disk Wars: The Avengers.

The Avengers: Earth's Mightiest Heroes
Magneto arrives at Avengers Mansion with his two children, the Scarlet Witch and Quicksilver, in search of the Wasp, having heard in the news that she is a mutant, and wanted her to join the Brotherhood of Mutants. The Avengers face him, just as Magneto was attacking a anti-mutant demonstrators, who were outside the mansion, but thanks to his magnetic powers, Magneto easily defeat to Iron Man and Thor, whose armor and hammer are made ​​of metal, while Pietro and Wanda faced Captain America and the Wasp. Then Magneto imprisoned the rest of the Avengers, explaining the reasons for his arrival, but the Wasp tells that she is not a mutant, and that the Avengers don't keep her prisoner. When one of the protesters threw a brick to Magneto, he unleashed havoc against the crowd, causing Quicksilver and Scarlet Witch to turn against their father because of his attitude. For their betrayal, Magneto attacks them both, who with the help of the Wasp are released, making Magneto decide to attack her. But then, the Avengers are released from their bonds and attack Magneto, who escapes from the battle, proclaiming that the war between mutants and humans will come, and that his children will fight on his side soon, or will be destroyed. Magneto was seen in a photo, on Nick Fury's wall of Skrull suspects in the episode "Infiltration".

Marvel Disk Wars: The Avengers
Charles Xavier convinces Magneto to help the Avengers and X-Men against Loki as there's a young Mutant whose life is in danger too. Magneto arrives and defeats the Loki-controlled Sentinels while Captain America and the X-Men go to rescue the other Avengers.

Trivia

 * In the recent comics, Magneto is no longer the father of Quicksilver and Scarlet Wicth after the AXIS event. Many believe this is due to his children's film rights being owned by Marvel while he is owned by Fox.
 * In the Fox X-Men films, he has been portrayed by Sir Ian McKellen and Michael Fassenbender.
 * In the X-men he seen sometimes or some episodes collaboratted or sparred with Professor X.