Pietro Maximoff is the son of the genetic terrorist known as Magneto, and brother to the hex-casting Scarlet Witch. Magneto and Professor Charles Xavier had discovered the Savage Land, a forgotten jungle. In this lost tropical world, the two men built a refuge for mutants seeking respite from persecution. But as time passed, their conflicting beliefs became a point of contention. Magneto felt that Homo superior represented the next step in human evolution, and that Homo sapiens should live under mutant rule. Xavier did not share his view. The tension grew, leading Magneto to expel Xavier -- with deadly force -- from the mutant haven they had created. Somehow, the Professor escaped with his life. Eager to prove himself to Magneto since he was a child, Pietro offered to finish the job on at least one occasion. He finally got fed up with his father after all the years of horrible treatment and decided to leave the Savage Land along with another member of the Brotherhood, Rogue. Together they found their way to the Xavier Institute and joined the X-Men.