Shota Aizawa, the pro hero Eraser Head, serves as a homeroom teacher at UA High School, wielding his Quirk, Erasure, to nullify others’ abilities through sustained eye contact—a tactical asset in combat and training. Initially resistant to teaching, his career at UA began under unforeseen circumstances explored in *My Hero Academia: Vigilantes*, which delves into his early dynamics with allies like Present Mic. Aizawa enforces a harsh yet pragmatic teaching philosophy, expelling students he deems unprepared for heroism’s risks, only reinstating them after they prove growth. His decisive actions during the Paranormal Liberation War, including countering Shigaraki’s Decay Quirk, came at great personal cost: a self-amputated leg to halt a Quirk-erasing bullet’s spread and a damaged right eye from Shigaraki’s assault, leaving him reliant on a prosthetic and eyepatch while diminishing Erasure’s efficacy. Adapting post-injury, he transitioned to mentoring emerging heroes like Shinsou and Monoma, navigating challenges such as Aoyama’s covert ties to the League of Villains and orchestrating strategies for Class 1-A’s final battles. His emotional complexity surfaces in confronting Kurogiri, a Nomu once his friend, reflecting his internal conflict over loss and hero society’s imperfections. Known for his disheveled appearance—capture weapon scarf, goggles, and rumpled attire—his injuries now mark him with a prosthetic leg and eyepatch, symbols of sacrifice. Despite physical constraints, his strategic brilliance and commitment to shaping future heroes endure. Colleagues like Present Mic and Midnight share bonds forged over years, while students like Kaminari occasionally prod at his private life, balancing his stern authority with relatability. His mentorship blends uncompromising discipline with genuine investment in students’ potential, underscoring a character defined by resilience, adaptability, and quiet compassion.