Minna-Dietlinde Wilcke (ミーナ・ディートリンデ・ヴィルケ, Mīna Dītorinde Viruke?) is a Witch of the 501st Joint Fighter Wing attached with the Karlsland Air Force. She became renowned as the Ace of Spades (スペードのエース, Supēdo no Ēsu), although some also call her by the pet name of Fürstin (フュルスティン, Fyurusutin). Her familiar is the wolf.
She is skilled at leading operations and squad management and, rather than pursuing her own individual military gains, she focus on the efficient military performance of the squad as a whole. She also has a tendency to look after her subordinates, which causes some to have a motherly impression about her.
Minna's inherent magic is called Three Dimensional Space Understanding Ability (三次元空間把握能力, Sanjigen Kūkan Haaku Nōryoku). Classified in the perception-lineage, it makes possible to perceive and discern all nearby targets in every direction, sorting out their position, number and classification.
Her ace archetype is Wolf-Dietrich Wilcke. Similar to Minna, Wolf-Dietrich bore the nickname "Fürst" amongst his friends and squadmates.
Due to a scene in the second season she is often drawn with a noteworthy ass.