Joseph was discovered near a South American orphanage run by a nun known as Sister Maria. After several run-ins with "The Colonel", Joseph opted to leave the orphanage to protect the children. It was shortly after this that he encountered Rogue and saved her from the first wave of Bastion's "". Rogue believed Joseph to be an amnesiac and mysteriously youthful Magneto. During this time, the X-Men first encountered the being known as Onslaught. Believing Magneto to be responsible, the Avengers sought Joseph out and figured out that he was not responsible nor was he like Magneto. Out of guilt for what he believed were his past sins, Joseph joined the X-Men in their war against Onslaught. In an attempt to find out more about his past, Joseph encountered the Acolytes and their leader Exodus. They too believed that Joseph was Magneto and begged him to lead them. Exodus turned on Joseph when he noticed that Joseph was not the Magneto he knew. Joseph took on the identity of Magneto in order to convince the Acolytes that he truly was Magneto and ordered them to abandon their current activities. Exodus disagreed, but obeyed because he believed he saw a glimmer of the old Magneto within Joseph. Joseph returned to the X-Men, satisfied that he no longer was Magneto. Shortly afterwards, Joseph dedicated himself to reconstructing the Z'nox chamber to give Rogue some control over her powers. It was successful, to an extent, in that while standing under it, Rogue was unable to absorb the powers or psyche of another person. Immediately after this, Joseph and some of the X-Men were sent to the Shi'ar Galaxy in order to fight The Phalanx. When they returned to Earth, they were captured. In captivity Joseph met the mutant Maggott, who had been saved by Magneto years before and expressed his gratitude to the confused Joseph. Maggott discovered though that their captor Erik the Red was the real Magneto in disguise. Feeling that he owed Magneto for saving him, he did not tell the X-Men that Joseph was not Magneto. Several weeks later, the Israeli agent Sabra appeared at the X-Mansion and wanted to kill "Magneto". Maggott revealed to her that Joseph wasn't Magneto, confirming Sabra's suspicions. Joseph left with Sabra to find out more about his past and Magneto's current whereabouts. He was kidnapped by Astra, who told Joseph his true origin where she was his creator by cloning him from Magneto's DNA. Astra sent Joseph against Magneto, who had publicly revealed himself. These events came to be known as the Magneto War. During this Magneto War, Joseph appeared to have sacrificed himself in order to repair the damage done by Magneto to Earth's electromagnetic field. However, Astra revived Joseph, and implanted a record of Magneto's old memories, causing him to think as the true master of magnetism once did. Joseph announces his comeback by murdering 40 anti-mutant campaigners while wearing Magneto's costume, leaving the real Magneto to take the blame. Joseph has also assembled his version of the Brotherhood of Mutantsconsisting of himself, Astra, and mutated versions of Blob, Mastermind, Quicksilver, Scarlet Witch, and Toad. It is soon revealed that the mutated versions of Blob, Mastermind, Quicksilver, Scarlet Witch, and Toad are clones created by Astra. All the clones were killed by Magneto. Joseph is defeated by Magneto and remanded to Utopia's X-Brig.
Death
After the destruction of Utopia in the war between the Avengers and X-Men, Danger released all prisoners on the X-Brig, including Joseph. After the loss of Magneto, Joseph disguised himself as the Master of Magnetism and formed a new Brotherhood in the wake of the death of the X-Men. He brought them to an Air Force base in East Transia to stoke fear in humankind because of the spike in anti-mutant violence. But they were confronted by a new group of X-Men led by a resurrected Cyclops. After the battle, Joseph's ruse was revealed making Juggernaut mad because he thought the group was made to protect mutants. He attacked Joseph and held him down while Scott and him talked about ideologies. But before anyone could see what was going on, Joseph was killed by Kwannon who considered Joseph a threat to mutantkind.
Powers and abilities
As a clone of Magneto, Joseph possesses the superhuman power to generate extremely powerful magnetic fields. He can employ these magnetic fields to manipulate ferrous metals and to produce a number of other effects. He has also been shown to generate electricity and electromagnetic radiation. Joseph is capable of personal levitation/flight at high speeds, and often produces a protective magnetic aura around his own body. The real Magneto has on rare occasions been able to produce a wormhole using magnetism, and to safely teleport himself and others by means of the wormhole, but Joseph has not demonstrated a similar ability. It was revealed that the circumstances of his creation mean that he lacks the mental barriers that the original Magneto has established over the years to prevent himself from over-using his powers, with the result that Joseph can manipulate more energy than Magneto is capable of controlling on his own, at the cost of causing significant damage to Joseph if he pushes himself too far.
