Mashirao Ojiro trains as a Pro Hero in U.A. High’s Class 1-A, sporting olive skin, a muscular frame, and short blond hair swept forward. His most striking trait—a powerful prehensile tail with a hairless shaft and bushy brown tip—complements a hero costume modeled after a karate gi, complete with a black belt. Post-graduation revisions inverted the color scheme to black fabric edged with white fur, paired with tactical communication headphones.
Known for his composed and principled nature, Ojiro prioritizes integrity above accolades, famously stepping down from the U.A. Sports Festival after discovering his advancement stemmed from Hitoshi Shinso’s mind-control quirk. This humility roots in years spent honing a once-underestimated tail quirk into combat readiness through relentless effort. Though peers occasionally dismiss him as ordinary, his steadfast resolve and team-oriented mindset make him a reliable moral anchor for classmates.
His Tail quirk provides a versatile limb for acrobatics and strikes, seamlessly integrated into a martial arts repertoire featuring aerial spins like the Tornado Tail Dance and ground defenses such as Swamp Smack Spin. Collaborative drills with Eijiro Kirishima bolstered his tail’s durability, while Pro Hero Shishido’s guidance sharpened tactical flexibility. Early critiques from Ectoplasm about predictable patterns drove Ojiro to expand his movement lexicon, minimizing overreliance on tail-centric strategies.
Critical missions shaped his growth: executing hit-and-run maneuvers during the U.S.J. crisis, outmaneuvering Sen Kaibara’s gyration quirk in the Joint Training Battle, and partnering with Fumikage Tokoyami to confront Chimera on Nabu Island. Though overwhelmed by Nine’s Hydra quirk during the ambush, his strategic contributions proved vital. Academically, he ranked eighth in midterms, leveraging sharp analysis to exploit vulnerabilities like Pony Tsunotori’s Horn Cannon limitations.
Post-graduation, Ojiro earned the No. 32 Pro Hero rank, adopting a sleeker costume with shortened tail fur. Hailing from a martial arts lineage initiated by his grandfather, he wears tailored attire accommodating his mutation—a common adaptation among quirk users. Beyond combat, his intellectual rigor shone through tutoring peers like Momo Yaoyorozu and topping written exams.
Expanded media appearances include the I-Island Expo and clashes against Nine in *Heroes Rising*, where he coordinated with Kyoka Jiro and Mezo Shoji. Video game renditions highlight tail-driven techniques—Tail Punches for offense, Tail Counter for defense—emphasizing close-quarters mastery. His narrative epitomizes perseverance, transforming a basic quirk into a dynamic weapon through disciplined innovation.