Hizashi Yamada, also known as the hero Present Mic, holds the position of English teacher at U.A. High School while simultaneously working as a professional hero and hosting a radio show. His Quirk, "Voice," generates destructive sound waves capable of inflicting physical harm, rupturing eardrums, and shattering materials like glass. This power manifested explosively at birth, injuring the attending medical staff and his own parents. He channels and directs his Quirk using specialized directional speaker equipment worn around his neck. Weaknesses restrict its effectiveness underground or through thick layers of earth. His signature Ultimate Moves are "Loud Voice," "DJ Punch," and "Loud-Out Shout." Stat evaluations place his Power and Speed at a moderate level (3/5 or 3/6), while his Technique and Intelligence rank high (4-5/5). His Cooperativeness is exceptional (5/5 or 6/6), reflecting strong team tactics and deductive skills, evidenced by his early deduction of a traitor within U.A. before its confirmation. Physically, he presents as tall and slim with distinctive spiked blonde hair, rectangular eyes featuring concentric pupils (depicted as greenish-yellow in anime and red in manga), and a small mustache. His hero costume consists of a black leather jacket with a studded collar and shoulder pads, fingerless gloves, orange-tinted sunglasses, and headphones labeled "HAGE." Later depictions show him with longer hair spiked vertically and wearing circular glasses. He cultivates an energetic, flamboyant public persona during events like the U.A. Sports Festival and Entrance Exam announcements, frequently addressing crowds as "listeners." This exuberance conceals deeper emotional extremes, including intense rage triggered by provocations such as trespassing reporters or personal betrayals. He suffers from entomophobia, causing significant distress around insects and leading him to avoid forested areas. His history includes attending U.A. alongside Shota Aizawa (Eraser Head) and Oboro Shirakumo. During their second year, a villain absorbed and redirected Mic’s Quirk to collapse a building, resulting in Shirakumo's death. This event inflicted lasting survivor’s guilt on Mic, compounded by the indirect role his power played in his friend's demise. He copes by overworking across his three professions—hero duties, teaching, and hosting radio shows ("Put Your Hands Up Radio" and "Banana Dreamer")—a response contrasting with Aizawa's withdrawal. Decades later, Shirakumo’s reemergence as the villain Kurogiri intensifies Mic’s anguish, culminating in a confrontation with Kyudai Garaki, creator of the Nomu. Driven by grief during the Jaku Hospital raid, Mic uses his Quirk to shatter a Nomu tank and physically assaults Garaki. His relationships emphasize profound loyalty and emotional complexity. His enduring bond with Aizawa spans over 14 years, balancing their contrasting personalities. He mentors students like Jiro, who initially underestimated his combat skill, and participates in significant battles including the U.S.J. incident and Shie Hassaikai operation. Eight years after the war, his appearance features longer hair and updated costume elements, yet his core dedication to heroism and education persists.