Argo, nicknamed "the Rat," serves as a shadowy broker of knowledge within Sword Art Online’s virtual realm, trading critical survival strategies, guides, and hidden tips to players facing the game’s lethal trials. Renowned for her sharp wit and unwavering reliability, she becomes an indispensable ally to those navigating the death game’s perils. In the "Aria of a Starless Night" narrative, Argo furnishes Kirito with the Anneal Blade—a weapon crucial to his survival—and seeds his alliance with Asuna by revealing intel on the first-floor boss raid. Her calculated sharing of information not only accelerates their partnership but also stabilizes fragile player relations, mediating conflicts between factions to sustain a tenuous balance of collaboration and rivalry during pivotal raids. Though her real-world identity and deeper motives remain veiled, Argo’s in-game persona thrives on pragmatic, survival-driven logic, leveraging information as a tool to reduce collective risk. While certain adaptations exclude her, creating gaps in character dynamics, her foundational role in source material cements her as a linchpin of early-game strategy, her maneuvers quietly shaping alliances and tactical outcomes across SAO’s fractured player base.