Yo Shindo, a student at Ketsubutsu Academy High School’s Hero Course who progresses to Class 3-2, wields the Quirk "Vibrate," enabling him to generate destructive tremors through surfaces he contacts. These vibrations can trigger localized earthquakes or destabilize adversaries, though prolonged use strains his body. Through training, he develops resistance to his Quirk’s recoil. His signature technique, "Tremoring Earth," unleashes concentrated shockwaves to fracture terrain and disrupt enemy formations. Outwardly courteous and approachable, Yo strategically masks his cunning nature behind a veneer of amiability, disarming others to exploit openings. When pressured or provoked, his demeanor fractures, exposing a ruthlessly competitive streak. Though he acknowledges opponents’ resolve, victory remains paramount, driving him to dissect weaknesses with tactical precision. This duality earns him reputations as both a "tactful ally" and a "double-faced schemer," thriving in chaos through adaptability. At the Provisional Hero License Exam, he leads classmates in isolating U.A. High’s Class 1-A via terrain manipulation before confronting Gang Orca’s forces. Despite defeat, his maneuvers prove instrumental to the team’s strategy. Years later, as the No. 20 Pro Hero, he aids evacuation efforts during Tartarus prison’s collapse, clashing with the fugitive Muscular. Though overpowered, his vibrations critically degrade Muscular’s muscle fibers, creating an opening for Izuku Midoriya’s decisive strike. In the Final War, he joins heroes like Hound Dog and Ms. Joke to pursue the fleeing Skeptic, underscoring his aptitude for coordinated operations. His hero name, "Grand," originates from the Japanese onomatopoeia "gura gura" (earthquake rumbles), mirroring his Quirk’s seismic force. Yo’s design features a muscular frame, shaggy dark brown hair later cropped short with dyed streaks, and a costume equipped with a gold jaw-guard, vibration-dampening gear, and a combat knife utilized against Muscular. He shares a romantic bond with classmate Nakabe and maintains alliances forged through academic and professional endeavors. His arc traces a path of resilience against superior foes, balancing heroic dedication with morally ambiguous pragmatism. Pivotal battles spotlight his capacity for unorthodox strategies and tenacity, solidifying his legacy as a complex, formidable figure within hero society.