History
Quicksilver fought against the X-Men like the rest of the Brotherhood, battling them in Santo Marco and aboard Asteroid M. Somehow learning that Cyclops, who had become obsessive in his duties as the X-Men's field leader and felt Xavier failed to appreciate his commitment, had left the X-Men, Quicksilver and his sister the Scarlet Witch confronted the now homeless Cyclops in New York City. Whether he knew it or not, he used Cyclops' own bitterness about his teammates Angel and Marvel Girl finding time to begin a relationship to persuade him that his dedication would be appreciated as a member of the Brotherhood. Thus, Cyclops accepted Magneto's offer to join the Brotherhood of Evil Mutants.[1]