The first incarnation of The Brotherhood of Mutant appeared in 1964. This group was originally created by Magneto, one the X-Men's greatest enemies. The original members of the team included Magneto (the leader), Toad, Mastermind, Scarlet Witch and Quicksilver. Scarlet Witch felt obligated to remain with Magneto because he had saved her from an angry mob that was intent on killing her. Quicksilver, her brother, served Magneto begrudgingly while Scarlet Witch felt obligated to do so.
The Brotherhood of Mutants was created by the writer Stan Lee and artist Jack Kirby in 1964. The team made its first appearance in the comic book X-Men #4.
Major Story Arcs
Brotherhood of Mutants
Early in his war against humanity, Magneto organized a small band of mutants to go into combat at his side. Since the world had branded him a criminal, Magneto defiantly named his team of accomplices " The Brotherhood of Evil Mutants." The most subservient of the group was Toad, named both for his grotesque appearance and his superhuman leaping ability. There was also Mastermind, who could mentally create utterly convincing illusions. Lastly , there was Quicksilver, who could move at superhuman speed, and his sister, the Scarlet Witch, who could alter probability at will. Neither Magneto nor the two siblings knew at the time that he was actually their father by his estranged wife Magda.
Time, and again, the Brotherhood clashed with the original X-Men, until Magneto was captured by an extraterrestrial being known as Stranger. Tired of Magneto's war, Quicksilver and Scarlet Witch soon joined the Avengers Super Hero team. Magneto later reorganized the Brotherhood three more times, adding new members such as Blob, Unus, and Lorelei, before abandoning the concept entirely.
Brotherhood of Evil Mutants
Subsequently, the mutant terrorist Mystique formed her own Brotherhood. Mystique's team included her close friend Destiny, a blind mutant who could foretell the future; Rogue, her adopted daughter who could absorb the powers of those she touched; Avalanche, Pyro, and the Blob.
Later on, several mutant super-villains attempted to create their own versions of the team. Notable incarnations include Toad's Brotherhood, comprised of Blob, Pyro and Sauron; Xorn's Brotherhood, which incorporated Beak, Angel Salvatore, Basilisk, Ernst, and No-Girl, all of them students from the Xavier Institute's Special Class whom defected Xorn after he accidentally killed Basilisk; and Exodus's Brotherhood, which featured Black Tom Cassidy, Mammomax, Avalanche, Sabretooth and the moles Juggernaut and Nocturne.
At the beginning of the Young X-Men series, a new Brotherhood is lead by Lord Imperial aka Sunspot and is comprised of the former New Mutants, Cannonball, Magma, and Moonstar. Onslaught, The Brotherhood of Mutants were affected by Onslaughts attempt to re-create the world into the way he wished. Magneto and Professor Xavier were fighting and Xavier mind swipes magneto which results in the creation of Onslaught.
A new incarnation of the Brotherhood of Evil Mutants will be appearing during the Final Execution, acting as antagonists to the X-Force. Led by Daken, its current roster include: Earth-295 Blob, Mystique, Sabretooth, Shadow King, Skinless Man, as well as the Omega Clan ( Omega Black, Omega Red, Omega White).
In the Age of Apocalypse reality, the Brotherhood of the Chaos was made up of members Arclight, Box, Copycat, Spyne, and Yeti. The five mutants were sent by Apocalypse to intercept the X-Men and stop them from safely evacuating humans at the Great Sentinel Airlift. Thanks to Box's mutant powers, they were able to scramble the Sentinels' circuitry and rewire them to target the X-Men. In the confusion, Box and Copycat were able to escape, though the remaining three Brotherhood members were subdued.
Box and Copycat were not able to enjoy freedom for very long, though, as they were later found in Europa and killed by Wolverine and Jean Grey.
In the Ultimate universe the Brotherhood is called Brotherhood of Mutant Supremacy. The original members were: Magneto (leader), Mastermind, Blob, Toad, Scarlet Witch and Quicksilver.
After Quicksilver and Scarlet Witch joined the Ultimates new members were: Destiny, Vanisher, Unus, Madrox, Rogue, Forge, Sabretooth, Juggernaut and Hard-Drive. After breaking Magneto out of the super-human prison known as the Triskelion, Longshot appears to join the team.
They later appear in the Ultimates 3, with some changes in the roster, such as the addition of new members Lorelei and, oddly enough, Venom.
In the X-Men: First Class Issue 7: Who wants to Date a Millionaire, the X-Men were talking about former events not seen in the comics as they talked to each other about the Brotherhood of Mutants which were beaten in a battle by Stranger, an alien, which took Toad and Magneto with him after their fight, leaving behind Mastermind in stone and the twins, Wanda and Pietro, unharmed
In Nocturne's home reality the Brotherhood lineup was: Cyclops (leader), Rogue, Blob, Radioactive Man, Hyve, White Dwarf and Beast (Not Henry McCoy).
On Earth-12 the Brotherhood were: Quicksilver, Toad, Blob, Scarlet Witch and Mimic.
On Earth-5423 the Brotherhood were: The Big M (Mimic), Mystique, Destiny, Pyro, Avalanche and Blob. They all later reformed and started a new school for mutants.
In the first X-Men movie Magneto is joined by Mystique, Sabretooth and Toad. Their goal is to use a machine that triggers mutation against the human race.
In the second movie only Magneto and Mystique remain, they are forced to put their differences with the X-Men aside and join together to stop the mutant-hating Colonel William Stryker from committing genocide. Towards the end of the film Pyro switches sides and joins the Brotherhood.
In X-Men: The Last Stand the Brotherhood grows in size significantly. Notable additions to the team include Callisto, Multiple Man and Juggernaut. In this film the Brotherhood set out to destroy the 'Mutant Cure' that has been created.
Pryde of the X-Men
The Brotherhood appeared in the animated series X-Men: Pryde of the X-Men in 1989. They where called The Brotherhood of Mutant Terrorists. This team consisted of Magneto, Toad, Blob, Pyro, Juggernaut and the White Queen.
X-Men: The Animated Series
The Brotherhood of Evil Mutants also appeared in X-Men: The Animated Series in October 31 1992. In this incarnation the characters were Mystique, Blob, Avalanche and Pyro, they where backed up by the mutant Apocalypse.
In this animated series of X-Men they are more like teenagers rather than adults. This series ran from 2000-2003, in this series they where more like a group of trouble-making teenagers than terrorists. They where brought together by Mystique who was secretly working for Magneto.