Ms. Marvel  (Carol Susan Jane Danvers)
   
     Former member of the Avengers (seventeenth recruit); former Chief Field Leader of Homeland Security for the United States military; former agent of the Commission on Superhuman Activities; former member of the Starjammers; former informal associate of the Defenders; former in-house associate of the X-Men. 

     Carol Danvers was a veteran United States airforce officer and intelligence agent who became head of security at NASA, where she befriended the alien adventurer Captain Marvel (Mar-Vell of the Kree).

     During one of Mar-Vell's battles she was exposed to the radiation of the Kree psyche-magnetron device, which gave her superhuman powers that she used as the costumed crimefighter Ms. Marvel in emulation of Mar-Vell. 

 

     After aiding the Avengers against Ultron, Tyrak, Korvac and Doctor Spectrum, Ms. Marvel formally joined the team to replace the absent Scarlet Witch; however, Danvers was estranged from the group after they allowed her otherdimensional admirer, Marcus of Limbo, to abduct her for the second time, mistakenly believing that she was going with him willingly (this despite the fact that he had admitted to abducting her once before and mind-controlling her into sexual relations with him).

     Carol escaped Marcus after he accidentally killed himself, but then she lost her memories and her super-powers in a battle with the power-siphoning mutant Rogue. Unable to bear contact with the Avengers after they had failed her so badly, Danvers avoided them and was taken in by the mutant super-team known as the X-Men, whose leader, Charles Xavier, gave her therapy to help her recover from the Rogue and Marcus encounters. In the process, Carol regained her memories, but not her emotional attachments to them--she knew the story of her life, but no longer felt as if she had lived it

     Carol often assisted the X-Men in their adventures, and was eventually captured by the alien Brood, whose experiments gave her new super-powers; specifically, she could harness and manipulate stellar energies (such as light, heat and gravity) and augment her own physical abilities, all by tapping the energy of a cosmic phenomenon known as a white hole. Adopting a new costumed alias as Binary, Danvers continued to associate with the X-Men at first but was estranged from them when they recruited Rogue, hoping to reform her. Binary angrily departed, and since she no longer felt a strong emotional attachment to Earth, she used her powers to become a spacefaring adventurer, serving for some time as a member of the interstellar swashbucklers known as the Starjammers.

     Binary eventually returned to Earth to help save it from destruction during the Galactic Storm crisis, nearly dying in a successful attempt to save Earth's sun, but the Avengers rescued her and nursed her back to health, strengthening her attachment to them and to Earth in general. She left the Starjammers, opting to spend more time on Earth, though she declined to rejoin the active Avengers roster at first. Later, she participated in the post-Onslaught reorganization of the Avengers, aiding the group against Morgan Le Fay and Whirlwind, but was disturbed to notice that her Binary powers were waning to a fraction of their former strength. Her link to the white hole was gone, and while she could still tap other energy sources in her environment to fuel abilities such as enhanced strength, flight and energy blasts, she was no longer the cosmic force she had been as Binary.

     Trying to put her Binary days behind her and make yet another fresh start, Carol rechristened herself Warbird and rejoined the active Avengers roster; however, her various misfortunes had led to her developing a serious drinking problem. When her alcoholism began to affect her performance, the Avengers subjected her to a formal disciplinary court martial, during which she resigned in anger. Though she later fought the Wrecking Crew and the Doomsday Man alongide the Avengers, Carol shunned the team for the most part and tried to deny her drinking problem, but the friendship and support of Avengers founder Iron Man, himself a recovered alcoholic, eventually helped her admit her illness and seek help. She began participating in the Alcoholics Anonymous program, and turned herself in to the authorities for dangerous property damage she had committed during one of her drunken rampages as Warbird. Given her excellent record and her willingness to come forward, Carol was spared jail time and remanded into the custody of the Avengers, where she could "work off" her misconduct by rejoining the team's active roster. Carol readily agreed, determined to stay sober and rebuild her life.

     During the recent global conflict with the forces of the Kang Dynasty, Warbird twice served as the field leader of a contingent of Avengers: first leading a group of Avengers in neutralizing the rogue Deviant army of Dulpus, and later leading an Avengers espionage team in commandeering the headquarters of the Master of the World, whom Warbird killed in combat (a formal hearing later deemed her actions appropriate and cleared her of all charges). During this conflict, Warbird struggled with her surprising and disturbing attraction to her admirer, Marcus the Scarlet Centurion, the son and second-in-command of Kang, who was an alternate timeline counterpart of the Marcus who had seduced and abused Carol before; however, in the end, Marcus remained loyal to Kang and Warbird remained loyal to the Avengers, and Warbird ultimately played a key role in helping the Avengers thwart Kang's attempted conquest of Earth. Marcus, meanwhile, was slain by Kang for disloyalty after his father discovered he had aided Warbird during their conflict.

     When America was menaced by an expanding toxic cloud during the Red Zone crisis, Warbird served as the Avengers' liaison to the authorities, helping to coordinate government, military, medical and law enforcement operations until the Avengers finally neutralized the threat and captured its creator, the Red Skull. Impressed by Warbird's performance during the crisis, President George W. Bush offered her a new position as the military's Chief Field Leader of Homeland Security. She accepted, leaving the active Avengers roster to return to military service. She later became active with the government's Commission on Superhuman Activities as well, serving as parole officer to reformed super-criminal Abe Jenkins (MACH-4) and supervising the activities of Jenkins' Thunderbolts team, whom the CSA later manipulated into battling the Avengers. Uneasy about her conflicting loyalties to the CSA and to the superhero community, and deciding she needed to make more of a major name for herself as an adventurer, Danvers quit the government and resumed her superheroic career, returning to her original alias as Ms. Marvel. She has formed friendships with Jessica Jones (formerly Jewel) and Spider-Woman (Jessica Drew), other Avengers-connected female adventurers who have endured major setbacks like Carol herself.

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