Born in what was then East Germany, Christoph Nord was an idealist who became a freedom fighter opposing the communist regime as a member of West Germany’s Cell Six. His brother, Andreas, fought on behalf of the East Germans, and when the two encountered one another in combat, Nord was forced to kill him, a trauma that would haunt him for the rest of his life.
Following an encounter with the assassin known as the Confessor, Nord recuperated in a German hospital, where he fell in love with a nurse, Ginetta Barsalini. They married, and she soon became pregnant, but Nord later discovered that she was a double agent. When she attacked him, he was compelled to kill her. Consumed by guilt and grief, Nord immersed himself further in mercenary work and ultimately accepted recruitment into the CIA’s Weapon X Program. Assigned to its covert operations unit, Team X, he assumed the name David North and the codename Maverick.
Years later, Japanese crime lord Matsu’o Tsurayaba and his allies, including former Weapon X scientist Dr. Abraham Cornelius, resurrected the Russian super-soldier Omega Red. To stabilize his mutant abilities, Omega Red required the Carbonadium Synthesizer, a device stolen from him decades earlier by Team X. Omega Red captured Wolverine, whose buried memories contained the device’s location, along with several X-Men. Maverick was hired by former Team X liaison Major Arthur Barrington to stop Omega Red. Tracking Sabretooth to the villain’s base, Maverick assisted the X-Men in defeating Omega Red and his allies, and he personally executed Cornelius as an act of revenge.
Barrington later dispatched Maverick to recover the Xavier Files, documents belonging to the father of Professor Charles Xavier. The files were held by Dr. Alexander Ryking, a former colleague protected by the mercenary Warhawk. During the ensuing conflict, Warhawk detonated, killing Ryking and apparently destroying the files.
Maverick was subsequently assigned by the U.S. government to protect Aldo Ferro, a former Weapon X associate. Ferro became a target of Maverick’s former Team X comrades after Mastodon died when his age-suppression factor seemingly failed. Unknown to Team X, Ferro had secretly implanted all of them with false memories during their time in the Program. When Ferro betrayed Maverick, he sided with his former teammates against him; Ferro was believed killed during the confrontation.
Determined to bring Sabretooth to justice, Maverick later joined forces with the X-Men to capture him. Around this time, Maverick learned he had contracted the Legacy Virus, a fatal disease that targeted mutants. He asked Wolverine to kill him to spare him a prolonged death, but Wolverine refused. Maverick instead formed a close, almost fraternal bond with another Virus victim, Chris Bradley.
As his condition worsened, Maverick encountered Russian telepath Elena Ivanova, who was hunting Sabretooth to avenge her mother’s murder. The Legacy Virus claimed Maverick’s life, but Ivanova used her powers to revive him. The Virus entered full remission, and Maverick’s abilities mutated further as a result.
Maverick was later captured by Russian crime lord Ivan Pushkin, whose scientists implanted false memories convincing Maverick that Major Barrington had orchestrated his wife’s betrayal. Pushkin intended to manipulate Maverick into killing Barrington to silence testimony that threatened Pushkin’s interests. Maverick reached Barrington’s safe house but was confronted by Alpha Flight. Although he overcame the mental conditioning, he arrived too late to save Barrington from Pushkin’s enforcers, Hammer and Sickle.
In a later battle with Hammer and Sickle, Maverick lost his left eye to Sickle and was left for dead in the Swiss Alps. Forced to cauterize his wound to survive, he eventually resurfaced to aid Wolverine against a revived Weapon X Program. This new incarnation sent Sabretooth to recruit Maverick and fellow Team X veteran John Wraith. When both refused, Sabretooth murdered Wraith and critically wounded Maverick. With minutes to live, Maverick was taken to the Program and reluctantly agreed to rejoin, undergoing genetic alterations that transformed him into Agent Zero.
Though highly effective, Zero despised what he had become and frequently contemplated suicide. On his first mission, he was ordered to assassinate Wolverine in an attempt by the Program’s Director to break his will. Zero deliberately missed, only to be punished with a crippling electric shock. Later, after recapturing a traitorous Sabretooth, Zero was again prevented from killing him by the Director’s intervention.
After a change in leadership, Zero was tasked with eliminating the revived Gene Nation, now led by former Weapon X operative Marrow. During their confrontation, Zero learned that Gene Nation’s newest recruit, who was using the Maverick identity, had been sent to attack Grand Central Station. When Zero stopped him, he discovered too late that the impostor was his friend Chris Bradley. Enraged and driven by guilt, Zero pursued Gene Nation with renewed ferocity, though he refused to turn Marrow into a martyr.
His investigation eventually led him back to an abandoned Weapon X facility, where Zero joined forces with Wolverine and the enigmatic mercenary Fantomex to oppose the Project’s original architect, John Sublime.
