Tenya Ida, hero name Ingenium, serves as class representative of U.A. High School’s Class 1-A, upholding the legacy of his family’s renowned pro heroes. Born with the Engine Quirk, his calf-mounted engines grant explosive speed and devastating kicks, a genetic inheritance from the Ida lineage. His older brother, Tensei Ida, the original Ingenium, inspired Tenya’s hero path until the Hero Killer Stain left Tensei crippled. Consumed by vengeance, Tenya recklessly confronted Stain, surviving only through allies’ intervention. This ordeal reshaped his resolve, redirecting his focus from personal retribution to selflessly embodying Ingenium’s ideals. Tenya’s physique—tall, muscular, with dark blue hair and rectangular glasses—reflects his athleticism, while silver exhaust pipes protruding from his calves mark his Quirk’s mechanical nature. His hero costume evolved from streamlined armor for aerodynamics to advanced gear enhanced by Mei Hatsume, featuring retractable helmets, improved cooling, and sleeker aesthetics. Post-graduation updates incorporated horned helmets and a collapsible briefcase system, symbolizing his official succession as Ingenium. Academically, Tenya ranked second in midterms and fourth in the Quirk Apprehension Test, blending tactical intellect with combat efficiency. His Engine techniques include Recipro Burst for sudden acceleration, Recipro Extend for prolonged dashes, and Recipro Turbo, a short-lived Mach 3 sprint requiring precise management to avoid overheating or stalling—risks exacerbated by carbonated drinks. At the U.A. Sports Festival, he outmaneuvered Shoto Todoroki’s ice with calculated speed and terrain exploitation, showcasing strategic agility over raw power. Disciplined and rule-bound, Tenya enforces order as class rep with rigid gestures and stern expressions, though his rigidity sometimes sparks friction with peers. Yet crises reveal his loyalty: he aided Izuku Midoriya’s unauthorized mission to rescue Katsuki Bakugo, prioritizing friendship over protocol. Over time, he tempered his strictness with flexibility, joining unsanctioned operations during the Paranormal Liberation War to protect allies. As the No. 13 Pro Hero post-graduation, Tenya balanced familial legacy with personal growth, epitomized during the Final War by ferrying allies across continents at hypersonic speeds to counter threats like Dabi. His expanded role underscored mastery of his Quirk and dedication to collective heroism. The spin-off *Vigilantes* contrasts Tensei’s charismatic teamwork with Tenya’s structured discipline, deepening the Ida family’s thematic role as societal stabilizers. Tenya’s name, drawn from the swift Buddhist deity Idaten, mirrors his Quirk’s essence and heritage, cementing his identity as a hero defined by speed, duty, and evolving resolve.