Tamago serves as one of three primary protagonists, visually embodying a Japanese omelette sushi. Alongside companions Ikura and Maguro, he initially watches a superhero television show starring elite warriors called the Sushi Ninja. Tamago shares their fervent aspiration to become real-life heroes like these characters, though daily interactions within the group frequently descend into comedic conflicts and misunderstandings.

His design faithfully reflects tamago sushi culinary traits. A defining gluttonous streak shapes his personality, sometimes leading him to impulsively consume fragments of his companions, infusing their group dynamics with absurdist humor.

His development pivots on an unforeseen heroic opportunity: a princess fleeing antagonists known as the Nachos King Gang mistakes Tamago and his friends for the genuine Sushi Ninja and urgently begs their protection. Driven by long-held ambitions, Tamago and the group embrace this chance to become heroes. They confront their pursuers, facing trials that test their resolve and unity. Their quest propels them across the Galaxy to seek an artifact called the "Spice of Happiness," aiming to rebuild the fallen Sushi Ninja Empire—a journey marking their evolution from passive viewers to active adventurers.

Within the trio, Tamago navigates a tension between his self-focused appetite and unwavering commitment to their collective mission during clashes with threats like the Nachos King Gang.