Charlotte "Shirley" Yeager hails from Myra, West Virginia, Liberion, born to farming parents with two younger brothers and two younger sisters. Before her military service, she achieved fame as a motorcycle racer, shattering land speed records at the Bonneville Salt Flats on a modified Indian motorcycle equipped with a magic engine. This earned her the press moniker "Glamorous Shirley" and cemented her reputation for extraordinary speed. She enlisted in 1943, leveraging her deep mechanical expertise and prior military connections. Initially assigned to the Liberion Army's 363rd Fighter Squadron (Eighth Air Force), Shirley faced potential expulsion for repeatedly making unauthorized modifications to her Striker Unit. Her exceptional abilities prevented dismissal, instead leading to a transfer to the 501st Joint Fighter Wing, where she rose to Flying Officer and later Flight Lieutenant. Magnanimous, confident, and sociable, Shirley thrives on speed and risk, driven by a lifelong ambition to break the sound barrier. A freedom-loving individualist, she maintains a carefree attitude yet proves reliable in critical moments. She prioritizes cleanliness, famously transporting her personal bath to new assignments. Shirley formed a close, sisterly bond with Francesca Lucchini, often caring for her and involving her in adventures. Her rivalry with Gertrud Barkhorn is marked by mutual dislike, though underpinned by respect for each other's combat prowess. Her Telekinetic magic, "Speed Boost," grants exponential speed increases. It enabled her to break the sound barrier twice: first during a surprise Neuroi attack after Lucchini accidentally modified her Striker Unit, and again during a test flight of the Me 262 Swallow jet Striker, where she rescued Barkhorn after a malfunction. This power makes her the fastest Witch on record, specializing in intercepting high-speed Neuroi. Beyond combat, she excels as a mechanic, restoring vehicles like a damaged Swordfish Mk.I torpedo bomber or modifying trucks for enhanced performance. Following the 501st's disbandment, Shirley and Lucchini journeyed across North Africa, joining the 31st Joint Fighter Squadron in Africa and participating in Mediterranean and African front operations. Supply shortages forced her to rely on local resources, acquiring a red Britannia-made outfit after repairing her motorcycle there. She later rejoined the reformed 501st in Romagna. During this time, Duchess Maria of Romagna gifted her a customized M1911A1 pistol in gratitude, though its absence in later operations like Operation Southwind led to speculation about its fate. In the OVA *Operation Victory Arrow*, Shirley appears in a bunny outfit, reflecting her glamorous persona. During *Road to Berlin*, she loaned Barkhorn a Colt Single Action Army revolver, demonstrating her continued resourcefulness. Her mechanical skills remained vital, such as assisting in developing countermeasures against Neuroi ballistic missiles. Her story consistently balances recklessness with reliability. Frequent confinement for violating orders or damaging equipment contrasts with her indispensable role, underpinned by unparalleled speed and technical mastery. Relationships like her mentorship of Lucchini and rivalry with Barkhorn highlight her dual nature as both a team player and a fiercely independent spirit.