Hans von Zettour is a high-ranking Imperial Army officer, rising to Lieutenant General after serving as Deputy Director of the Service Corps. He stands as a scholarly general, a vital strategic pillar alongside Kurt von Rudersdorf. Gray-haired, he consistently wears an early 20th-century German-style military uniform, sometimes with a monocle over his left eye or with eyes closed yet moving with normal balance. His academically inclined personality emphasizes rationalism, strategic foresight, and meticulous risk assessment. Loyal to the Empire's interests, he prioritizes logical analysis over idealism, advocating for efficient military operations focused on attrition and resource management—such as eliminating enemy soldiers rather than territorial expansion—and dismisses unfounded opinions. His key military involvement begins early; he opposes the Legadonia offensive, a stance later vindicated by the Republic's invasion, leading to staff reorganizations that elevate him. At Charloburg War College, a discussion on modern warfare with Tanya Degurechaff inspires him to authorize her mage battalion command. He circumvents rank restrictions by assigning her as an organizing officer. During the Dacian War, his logistical acumen ensures supply deliveries precede combat, resulting in promotion to Major General. He later proposes swift measures for the Arene Incident and supports unconventional tactics like Tanya's assault on the Federation capital—initially seen as propaganda but backed for its strategic disruption. After presiding over the operation's court of inquiry, he reassigns Tanya to Western R&D before involving her in experimental *kampfgruppen*. Throughout the war, he coordinates reinforcements for the Eastern Army Group and strategizes with Rudersdorf on the Empire's mounting challenges. His pragmatic worldview surfaces in quotes describing modern war as measuring "the obvious gap between developed nations and developing ones──with corpses" and noting that "bad news" arrives overwhelmingly. He has an unmarried granddaughter. His Imperial War College review once criticized his "academically inclined personality" as unsuitable for a general. His name references Hans von Seeckt. In the crossover context, his contributions stem from his original military role. In the original web novel continuity, he is deceased, introduced as a Brigadier General, promoted to Major General during the Dacian War, and later Lieutenant General.