Gari Usher, an American, arrived in Japan originally as a foreign sushi chef. He possesses a tall, muscular build marked by a confident posture and sharp, focused eyes. His background includes rigorous training abroad, resulting in a distinct culinary style that merges traditional Edomae sushi techniques with bold, unconventional Western influences and ingredients, leading to visually striking, powerful creations.

Initially a formidable antagonist, Gari Usher exhibits a highly competitive, arrogant, and sometimes ruthless personality. He frames sushi-making purely as a battle for supremacy, dismissing tradition to focus solely on victory and proving his superiority. His signature technique applies immense physical pressure while forming nigiri, known for its forceful impact. He develops a specific rivalry with Takuma, viewing him as a primary obstacle.

Gari Usher's character evolves significantly through numerous sushi sumo competitions. Repeated encounters with Takuma and other skilled chefs challenge his worldview. While retaining his competitive drive, he gradually begins acknowledging the importance of tradition, respect for ingredients, and the spirit of sportsmanship. Defeats, especially hard-fought matches against Takuma, catalyze introspection and growth.

His intense rivalry with Takuma transforms into a complex relationship built on grudging mutual respect. Gari Usher learns to value his opponents' skills and the lessons competition offers. His culinary focus shifts slightly, retaining his unique flair while incorporating a deeper understanding of balance and ingredient essence, moving beyond sheer force. He becomes a recurring competitor who pushes others to improve while striving to refine his own craft, transitioning from an isolated conqueror to a recognized, fiercely competitive member of the sushi sumo community.