Aruga serves as a robotic operative within the mercenary group Escape Shop Extractors, which specializes in extracting clients from isolated clusters across a future society. He delivers technical and tactical support during missions, leveraging internal storage compartments that house tools and weaponry such as missiles and laser guns. These resources enable him to dismantle security systems and counter opposition, cementing his critical role in the team’s success. Outside missions, Aruga functions as a waiter at Cafe Vostok, executing routine service duties. He emits a distinctive mechanical scent evocative of an old man. Aruga’s existence is defined strictly by these operational parameters, with no elaboration on his origins, creation, or personal history. His role remains static, devoid of narrative development or evolution across documented appearances.