Gigantomachia looms as a colossal entity reaching 25 meters, forged into a living weapon through genetic modifications by All For One and Dr. Kyudai Garaki. Implanted with seven Quirks—Endurance (converting morale into stamina), Pain Blocker (immunity to pain), Gigantification (size increasing with agitation), Dog (heightened senses), Energy Saver (minimal sustenance requirements), Fierce Gains (muscle hardening), and Mole (claws for burrowing and subterranean movement)—he wields unmatched destructive potential. Originally All For One’s guardian, he later shifted allegiance to Tomura Shigaraki after rigorous trials of loyalty, demanding proof of Tomura’s worthiness. His early missions involved covert protection, utilizing the Mole Quirk to remain hidden in mountain ranges until All For One’s defeat. Tasked with safeguarding Tomura, Gigantomachia initially doubted the successor’s resolve, challenging him to demonstrate dominance. Tomura’s annihilation of Deika City and defeat of Re-Destro eventually earned Gigantomachia’s unwavering fealty, cementing Tomura as All For One’s heir. Driven by fanatical obedience to authority, Gigantomachia’s volatile temperament surfaces when his hierarchy is questioned. He obsessively carried a radio to receive All For One’s directives, yet this loyalty fractured upon discovering his creator’s willingness to discard him. Betrayed, he temporarily allied with heroes during the Final War, confronting All For One before falling to a fatal Impure Beam strike. In the Paranormal Liberation War, he ravaged cities as a mobile fortress, ferrying League of Villains members through battle zones. Heroes countered his near-invulnerability by exploiting his need to consume substances orally, deploying U.A. students to force-feed him sedatives. His rampages cemented his reputation as a “walking natural disaster,” leaving urban ruins in his wake. His demise underscored the disposability of All For One’s pawns, resonating in later Nomu enhancements inspired by his hybrid Quirk design. His legacy persists as a grim testament to engineered power devoid of free will.