Shota Aizawa, the Pro Hero Eraser Head, navigates heroism with a reserved, pragmatic demeanor forged by personal loss and unwavering dedication. As a U.A. High student, he bonded closely with Hizashi Yamada (Present Mic) and Oboro Shirakumo. Plagued by self-doubt over his Erasure Quirk—which temporarily negates others’ abilities—Aizawa found reassurance through Oboro’s mentorship. A critical work-study mission against a smoke-wielding villain cemented their dynamic when Oboro provided goggles to counter the threat, bolstering Aizawa’s confidence. A defining mission turned tragic when a collapsing building forced Oboro to shield children, sacrificing himself. Aizawa, believing Oboro’s voice guided him via communicator, later discovered the device was shattered, confronting the truth that his own resolve carried him through the battle. The loss drove Aizawa to relentless solo training, shaping his path as an underground hero who shunned publicity post-graduation, prioritizing stealth and independence. Nemuri Kayama (Midnight) later recruited him to teach at U.A., where his stern methods—including deceptive expulsion threats as “logical ruses”—aimed to harden students’ resilience. Though outwardly aloof, he repeatedly risked his life for their safety, enduring grave injuries during the U.S.J. invasion while shielding his class from Tomura Shigaraki. His appearance mirrors his grueling profession: a black combat suit, capture weapon, and goggles evolved into a prosthetic leg and eyepatch following clashes with Shigaraki and High-End Nomus. Unkempt hair and perpetual exhaustion contrast his formal public attire. Aizawa’s logic-driven exterior belies covert care, evident in mentoring Hitoshi Shinso and safeguarding Eri. Trauma resurfaces upon discovering Oboro’s corpse repurposed into the Nomu Kurogiri, igniting a vengeful pursuit of the scientist responsible. In combat, Erasure synergizes with martial prowess, a steel-wire scarf for restraint or mobility, and strategic use of caltrops, knives, and terrain to offset his Quirk’s dry-eye vulnerability and mutation-type limitations. Evolving from detached instructor to viewing students as equals, Aizawa acknowledges their growth during crises like the Paranormal Liberation War, balancing mentorship with respect for their autonomy. Key bonds—steadfast camaraderie with Yamada, collaborative rapport with Kayama, and protective guardianship of Eri—highlight his drive to avert tragedies, echoing Oboro’s enduring influence.