Cover Girl is the code name used by the G.I. Joe team member and U.S. Army Sergeant Courtney A. Krieger. Before joining the Army, Krieger had a successful career as a fashion model, starting off in Chicago -- near her hometown of Peoria, Illinois -- then making her way to New York. Cover Girl became disillusioned with modeling and decided to enlist in the Army, hoping to "put new direction" in her life. She then attended Armor School at Fort Knox and other related technical schools. She is also proficient in anti-tank weapons.

    Cover Girl joined the G.I. Joe team in 1983 as the driver of the Wolverine missile tank and first saw combat against Cobra during a battle at the Treasury building in Washington, D.C. She later was one of he many Joes who defended the Pit against a Cobra attack. After helping to rebuild the Joes' damaged headquarters, Cover Girl partnered with Clutch during the Joes' surveillance of Cobra activities in Switzerland and Italy. She had to suffer Clutch's sexist advances, but continued with the mission, which led to the capture of Cobra Commander. Months later, Cover Girl joined a team of Joes raiding the house of a suspected Cobra agent. Their suspicions proved to be true and after the Cobra agent fled, the team followed clues that were left behind and discovered a secret Cobra operation in the Gulf of Mexico. It would lead to the creation of Cobra Island. Some time afterward, Cover Girl was one of the many Joes who participated in the invasion of the Cobra-controlled town of Springfield.

    When Cobra attempted to take control of the icy nation of Frusenland, Cover Girl served as gunner onboard the Persuader laser tank and fought a column of Cobra's armored vehicles. The Joes won the day and rid the tiny country of Cobra. After seeing action in Frusenland, Cover Girl spent less time in the field and began to help train new recruits to the Joe team. She was one of the few Joes that did not participate in the Cobra Island civil war. In the aftermath of that conflict, Hawk, General Hollingsworth and most of the Joe team were arrested by corrupt generals claiming that the Joes had acted without authorization from above. Cover Girl and the other free Joes went underground and planned to clear their commanders' names. Cover Girl was one of the leaders of the group's assault on the Virginia hospital were Hawk and Hollingsworth were being held as prisoners. The generals were freed and the team was cleared of any wrongdoing.

    Some time later, Cover Girl and the other women on the Joe team went undercover as cheerleaders when Cobra threatened to kidnap the President at a major league baseball game. Despite being somewhat embarrassed with the situation, they managed to save the President's life. Training new Joes and occasionally monitoring surveillance satellites at the Pit in Utah, Cover Girl continued to work with the team until it was disbanded in 1994.

    Once again looking for new challenges, Cover Girl attended military intelligence school at Fort Huachuca, AZ and after completing that training was sent on a number of highly classified missions for the government. She was called back to the newly reinstated G.I. Joe team to help investigate the kidnapping of a mysterious young boy who turned out to be one of several clones of Serpentor. Cover Girl was later part of a convoy of vehicles escorting a group of young children who turned out to be clones of the original Serpentor. When the revived Serpentor arrived to claim them with the forces of The Coil to back him, Cover Girl and several others were captured, and some of the team's new recruits were killed. Imprisoned on Cobra Island, the Joes eventually escaped and joined the battle against Serpentor's forces as the Joe team invaded the island. Cover Girl later returned to duty and helped guard Destro as the recently-arrested weapons dealer was transferred from the Joes' custody to the United Nations for trial.

    After the Joes stopped a plot by Cobra to unleash the weapon known as the Tempest, and defeated a new threat, the Red Shadows, the military again disbanded the team. She then began serving as a recruiter for the Army, acting as a spokesperson for the military. In that capacity she was concerned that she would raise suspicions that she is just a pretty face being used as a recruitment tool. One year after the defeat of the Red Shadows, the Joe team was reformed with a smaller roster of active members. Cover Girl, like most former Joes, served as a reserve member of the new team. She was called back to duty to stop a group of terrorists who had taken control of a Cobra biological weapon facility in Manhattan. Around this time, the Joes were surprised to learn that Cover Girl had been dating Shipwreck since the team was reformed. The unlikely pair began a relationship after years of friendship and flirtation. Cover Girl again returned to duty alongside Shipwreck to prevent Cobra's kidnapping of a Brazilian senator.

    Following Cobra Commander's acquisition of the M.A.R.S. corporation and the revelation that he possessed information on the identities and families of many Joes, the Joe team expanded its roster of active members to include Cover Girl and several others. The team began tracking down as many former and current Cobra operatives as they could find. In Dagestan, Cover Girl fought and captured the Cobra known as Ghost Bear. Next, she and Shipwreck were sent to bring in Skull Buster in Namibia, and both barely escaped with their lives. G.I. Joe soon learned that the new spike in Cobra activity was part of Cobra Commander's plan to literally start World War III, leading General Colton to activate all reserve members of the team. The conflict spread across the globe as Cover Girl and the core members of the team took the lead in fighting Cobra and the Iron Grenadiers. Eventually, the Joes crushed Cobra and finally arrested Cobra Commander, bringing an end to the war. Most reserve Joes have returned to their previous assignments while Cover Girl and Shipwreck continue on as active members of G.I. Joe.