Before the current Krakoan Age of the X-Men the former villain Magneto formed a new incarnation of his classic «Brotherhood of Mutants,» dead set on going back to his old ways and re-focusing on mutant supremacy. However, due to cancellations, retcons, and crossover events this version of Magneto's Brotherhood was only seen in action once and never again.
Magneto is perhaps best known as a villain, although he has actually spent more time as a hero in his publishing history, and is often associated with two major groups of villains, the Brotherhood of Mutants and the Acolytes. Since the early 2010s, Magneto has been almost exclusively a good guy or anti-hero, but after dealing with a truly horrendous attack during the course of X-Men Blue Magneto had a mental breakdown, and afterward decided to reform his Brotherhood with a new roster.
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X-Men Blue — written by Cullen Bunn with art by Jorge Molina and Matteo Buffagni — followed the time-displaced original X-Men forming a new team trying to reestablish the X-Men as a force for good in the public. Working with Magneto in secret, who everyone thought was dead, X-Men Blue did amazing work to win public favor. Magneto played a major role in the Secret Empire event during this time, making a deal with the Nazi Steve Rogers to give an area of California, New Tian, to the mutants, and he was also integral in defeating the Mothervine attack. Mothervine was an X-Gene creating, or enhancing, drug created by Miss Sinister that was spread throughout the world by her, and to stop Magneto from ruining her plans she sicced a group of newly transformed Mothervine mutants on Magneto, forcing him to kill them. This
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