Miho Nishizumi is the main protagonist of the anime series Girls und Panzer. She is a second-year student at Ooarai Girls Academy and serves as the commander of the Anglerfish Team, which operates a Panzer IV tank. She also functions as the overall captain of the school's sensha-do team. Miho was born into the distinguished Nishizumi family, known for its long tradition of sensha-do, and she was originally a student at Kuromorimine Girls Academy, where she served as the executive officer under her older sister Maho and her mother Shiho. A traumatic incident during a championship match, in which she abandoned her flag tank to rescue the crew of a disabled Panzer III, caused her team to lose and led Miho to transfer to Ooarai in an attempt to escape sensha-do entirely. However, the Ooarai student council forced her to join the school's newly revived sensha-do team, and she gradually took on a leadership role.

In terms of personality, Miho is gentle, shy, and friendly, and she often lacks self-confidence in social situations. She places great importance on her friends' feelings and is deeply loyal to those around her, sometimes sacrificing her own reputation for the sake of others. In battle, however, her demeanor changes: she becomes calm, decisive, and quick-thinking, displaying a sharp tactical mind. Her leadership style is empathetic and encouraging, which helps her teammates feel valued and work together effectively. Miho's primary motivation is to foster camaraderie and friendship through sensha-do, in contrast to the strict and competitive Nishizumi style that prioritizes victory at all costs. She also carries lingering fear and traumatic memories associated with tanks, which she must confront over the course of the series.

Miho's role in the story is that of the central character who leads Ooarai's diverse and inexperienced team through the national tournament, achieving a series of upsets and ultimately reaching the finals against Kuromorimine. She is the key strategist and moral anchor for her team. Her key relationships include her sister Maho, who appears cold but genuinely cares for her; her close friends and teammates on the Anglerfish Team: Saori Takebe, Hana Isuzu, Yukari Akiyama, and Mako Reizei, each of whom helps her grow in confidence. Her relationship with her mother Shiho represents the weight of family expectations. Over the series, Miho develops from a reluctant participant into a confident leader who can balance her heritage with her own values. She overcomes her traumatic past during the final battle against Kuromorimine, embracing the lessons of the Nishizumi style while staying true to her compassionate nature.

Notable abilities include exceptional strategic thinking and the capacity to formulate effective plans under pressure. She is skilled at coordinating tank maneuvers and reading the battlefield. As a member of the Nishizumi family, she possesses an instinctive awareness of tanks and incoming shells, allowing her to sense threats without direct visual confirmation, a skill honed by rigorous training. She also shows a talent for making friends and building trust, which is essential for leading a heterogeneous team. Outside of battle, Miho has a fondness for the Boko teddy bear character and collects related merchandise, a hobby that provides a glimpse of her softer, more playful side. Her birthday is December 16.