Real Name: Pietro Maximoff
Origin: Somewhere in Eastern Europe
Affiliation: Brotherhood
Relatives: Erik (Magneto, father), Wanda (Scarlet Witch, sister)
Powers: Moves at incredibly fast speeds
Background: Through most of Pietro's life, he has had a constant rivalry with Evan Daniels, the X-Man known as Spyke. In frustration, and an act of declaration of his new alter-ego, Quicksilver, he managed to quickly rob a few lockers, and pin the blame on his former friend. When Spyke turned the tables with the help of Cyclops and Jean Grey, Quicksilver landed in jail. There he was easy pickings for Magneto to recruit him into the Brotherhood of Mutants. Quicksilver is eager to stand with the Brotherhood, his own ego making him truly believe their philosophy of mutant superiority.

One of the few things known of Pietro's young life is that he has a twin sister, Wanda Maximoff, aka the hex-casting Scarlet Witch. When the two were very young, their father Magneto convinced Pietro that all of them would be better off if the uncontrollable Wanda were placed in a mental institution. Pietro reluctantly watched as Wanda was taken into the institution, and the experience left both Pietro and Wanda with resentment to their father, and both show no qualms about removing Magneto from his place as leader of the Brotherhood.

However, in the "Day of Reckoning" fiasco, Quicksilver revealed his true allegiance, leading the X-Men/Brotherhood team-up into a trap, and then speeding away to his waiting father. After Magneto had caused the ground to cave in, they heard loud footsteps, and Quicksilver commented that "he" was using the Sentinel, indicating that the entire incident had been arranged by Magneto and Trask as a test for the Sentinels, as well as an excuse to announce to the world that mutants existed. After Wanda used her abilities to severely weaken Quicksilver, he watched in horror as a Sentinel robot came crashing down on Magneto, apparently crushing him. At least, that's what was believed to have happened. Toad and Scarlet Witch reviewed the news reels, and saw that Quicksilver had run in at the final second, and saved Magneto.

After Blob, Avalanche, and Toad almost failed in their rescue of Quicksilver, Magneto, through the use of Gambit, placed his son at the head of the Brotherhood, much to the chagrin of Avalanche, who had been the leader of the group to that point, when Mystique was not around, of course.

Soon after the apparent death of Magneto, a typical argument between Quicksilver and Scarlet Witch on a subway led to a large wreck. In an attempt to save their own skins, the Brotherhood also saved many on the train, and were soon considered heroes. The Brotherhood, under the guidance of Quicksilver, began staging accidents and rescuing people. Though they portrayed mutants as good people, the X-Men still suspected they were behind the accidents, especially Cyclops and Jean. At the same time, Principal Kelly began his run for mayor of Bayville, on an anti-mutant platform. The Brotherhood attempted to strongarm him, but the X-Men ran them off. Kelly wasn't impressed, and vowed to continue his platform, and walked away from the X-Men. Afterwords, the Brotherhood staged and solved another accident, pinning it on the X-Men through Scarlet Witch's clever use of her powers. With the X-Men in jail, Quicksilver decided to stage one more, gigantic accident, which the Brotherhood could not control, and the X-Men were released to stop the devastation. Though they tried their best, they still needed Avalanche's help to stop the accident from doing too much damage, after which he promised they were out of the hero business, permanently.

After the rise of Apocalypse, Quicksilver had to lead the Brotherhood against Magneto and the rest of the Four Horsemen, eventually defeating them and their master.
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