Tamaki Amajiki, hero name Suneater, attends U.A. High School in Class 3-A and stands as one of The Big Three alongside Mirio Togata and Nejire Hado. His background includes social anxiety rooted in perfectionism. Struggling to make friends after transferring in third grade, he met Mirio Togata, who noticed Tamaki's interest in heroes and became his first friend. This bond proved fundamental, with Mirio constantly encouraging him and serving as an inspiration. Their shared difficulties controlling their Quirks during middle school further fueled Tamaki's self-doubt. He exhibits extreme shyness, social awkwardness, and pervasive anxiety, especially in groups. He often avoids eye contact, hides his face against walls when overwhelmed, and finds verbal communication difficult under stress. Despite low self-esteem and a tendency to interpret praise as mockery—particularly from mentors like Fat Gum—he holds strong convictions. He fiercely opposes devaluing hard work and rejects treating allies as expendable, as seen confronting the Eight Bullets. His hero name Suneater signifies his aspiration to embody Mirio's radiant bravery, symbolizing a desire to "outshine the sun." His Quirk, Manifest, allows him to manifest physical traits of anything he consumes. Eating octopus takoyaki generates tentacles, while clams provide defensive shell hardening. The potency and duration depend on quantity consumed and the food's presence in his system. Rigorous training granted him advanced control: simultaneous multi-part transformations, selective feature manifestation, and size manipulation. He can also assimilate non-food items like crystals if ingested. His hero costume includes food pouches for mid-battle replenishment. Key techniques are Chimera Kraken (large-area tentacle strikes), Chimera Centaur (equine lower body for mobility), and Octopus Mirage (visual cloaking). During the Final War, he combined his Quirk with Nejire Hado's energy to create the Plasma Cannon, integrating traits from over a dozen organisms for a concentrated blast. His operational history includes critical engagements. Interning with Fat Gum, he assisted in patrols and undercover work, surviving a temporary Quirk-erasing drug during the Shie Hassaikai investigation. In the subsequent raid, he overcame three Eight Bullets members—Toya Setsuno, Yu Hojo, and Soramitsu Tabe—solo by tactically dismantling their teamwork. He obscured Toya's sight-dependent Larceny Quirk, absorbed Yu's crystals for defense, and tricked Soramitsu into ingesting octopus-derived neurotoxin. Later, during the Paranormal Liberation War, he confronted Gigantomachia, sustaining injuries. In the Final War, he joined the assault on Tomura Shigaraki at Gunga Mountain Villa and later at floating U.A., where his Plasma Cannon failed to decisively injure the enhanced foe. Post-graduation, Tamaki became a professional hero and Fat Gum's sidekick. By the series' epilogue eight years later, he ranks as the No. 18 Pro Hero. His physical appearance evolved, featuring shorter hair and an updated costume with scarlet accents, white wrist armor, and a straw-like apparatus for rapid food intake. His relationships show interdependence and mutual respect. Mirio remains his primary emotional anchor, whose optimism counters Tamaki's pessimism. He collaborates professionally with Nejire Hado, notably in combined attacks. Fat Gum's mentorship fostered greater resilience, though Tamaki initially misread the Pro Hero's encouragement as sarcasm. Trivia notes list clams as his favorite food for combat utility, Chiba Prefecture as his birthplace, his butterfly appreciation, and the Japanese idiom "flea's heart" describing his easily frightened nature.