Koji Koda, a student in U.A. High School’s Class 1-A, possesses a tall, muscular frame and a distinctive rock-shaped head with peach-toned skin. His hero costume evolves from a yellow suit with red markings to a maskless design post-graduation, briefly incorporating a full-face mask during the Provisional Hero License Exam. The Final War triggers a physical metamorphosis, elongating his horns to facilitate silent telepathic animal communication—a Quirk inherited from his mother, who championed his heroic aspirations despite societal biases against heteromorphs. Inherently shy and soft-spoken, Koji relies on sign language, prompting peers like Kyoka Jiro to initially assume muteness. His gentle demeanor belies his imposing stature, complemented by a profound bond with animals, exemplified by his pet rabbit Yuwai-chan. Though crippled by entomophobia, he confronts this fear during the Final Exams, directing insects to incapacitate Present Mic and aid his team. Koji’s Anivoice Quirk bridges communication with fauna, initially necessitating vocal commands. Rigorous training expands its scope, while his awakened telepathic horn ability during the Final War eradicates speech dependence, circumventing his social anxiety and broadening tactical applications. Animals under his guidance execute reconnaissance, diversionary tactics, and coordinated strikes, instrumental in events like the Provisional License Exam and Nabu Island crisis. Critical growth moments include defending the USJ Downpour Zone alongside Fumikage Tokoyami, pressuring Jurota Shishida with Eijiro Kirishima in the Joint Training Battle, and honing rescue expertise under Wash’s mentorship. The Final War sees him disrupt the Paranormal Liberation Front’s heteromorph recruitment via telepathy, cementing his evolution from reticent student to decisive hero. Post-graduation, Koji partners with Tentacole as a professional hero, channeling his Quirk’s non-combat strengths to uplift allies and civilians. His trajectory underscores conquering personal limitations, maximizing unique abilities, and redefining heroism as a force for unity and reassurance.