Usujio had stubble on his chin and upper lip, three whisker-like red stripes on his cheeks, and wore dark sunglasses, an orange headband, a gray vest over a black shirt, and black gloves. He used an Enfield light machine gun.
On November 25, 2025, Usujio was holding an impassioned meeting with his squadron in the central square of SBC Glocken when Shinkawa Kyouji, using his brother's avatarSterben, invaded the meeting and shot him with a Type 54 "Black Star", though the damage was negated in town. Unaware that Shinkawa Shouichi had infiltrated his apartment in the real world and had injected him with a dose of succinylcholine at that very moment, Tarako was about to confront the interloper in anger when he suddenly disconnected at 22:00:04. Three days later on November 28, his corpse was found in his home, the cause of his death being determined to be heart failure.
Usujio is a type of soy sauce, while Tarako means cod roe (codfish eggs).