Wilhelmina Braunschweig Ingenohl Friedeburg, nicknamed "Mi-chan," is the deputy-captain of the warship Admiral Graf Spee. She possesses fair skin and light blonde hair, styled with one braided section and strands hanging near her eyes. Her standard attire is the black officer's uniform of Wilhelmshaven Maritime High School, distinct from the crew's red uniforms. She exhibits a hot temper yet demonstrates underlying care and concern. A high-achieving graduate of a German naval academy, she rigorously trains and disciplines crews from other ships to enhance their combat effectiveness. She habitually uses "washi" as a first-person pronoun, a quirk adopted from Japanese gangster films. This shared interest with Kouko Nosa, secretary of another ship, forms the foundation of their close friendship; they frequently reenact dialogue from these films together. Her background includes escaping the Admiral Graf Spee after the RaTt virus infected the crew, causing a mutiny that involved her superior and friend, Thea Kreutzer. Her escape craft was destroyed by the Graf Spee's secondary guns, leading to her rescue by another vessel's captain. Awakening during an engagement with the submarine I-201, she intervened, criticizing tactical errors like leaving lights on during nighttime combat. Her guidance proved instrumental in disabling the submarine, and she secured a promise of assistance to retake the Graf Spee. Leading a boarding party onto the infected Graf Spee, she directed the team to the bridge while administering antibodies to infected crew. Confronted by the virus-influenced Thea Kreutzer, she embraced her friend until an antibody could be administered. This action restored Kreutzer and the crew, forging a lasting alliance. Though she later departed with the Graf Spee, she vowed to reunite with Kouko Nosa. Later, she returned aboard the Admiral Graf Spee as part of a surface action group. This group provided critical support by drawing enemy fire away from allied ships, enabling a successful boarding operation against another infected vessel. Her full name carries maritime and historical significance: "Wilhelmina" derives from masculine Germanic roots and was notably borne by Kaiser Wilhelm II; "Braunschweig" references a city in Lower Saxony; "Ingenohl" alludes to Admiral Gustav von Ingenohl, commander of the German High Seas Fleet in World War I; "Friedeburg" likely references Admiral Hans-Georg von Friedeburg, the Kriegsmarine's final commander, or a town along the Elbe River. Her school's name, Wilhelmshaven, is the port city where the real Admiral Graf Spee was launched.