Argo "The Rat" is an information broker and courier operating within the Sword Art Online death game. She's best known for her willingness to trade in any information—no matter how obscure or personal—for the right price, though she's famously coy about the origins of her distinctive whiskers, which has only made players more curious.
Both she and Kirito suspect each other of being beta testers, but neither has ever confirmed it, and they seem to have an unspoken agreement to keep it that way. Despite her reputation as a seller of high-priced intel, Argo has a softer side: she's authored a series of free guidebooks that appear in most towns throughout the game, genuinely helping new players navigate the early floors. It's a contradiction that sums her up pretty well—she'll charge you exorbitant prices for rumors while simultaneously publishing resources that cost nothing, making her one of the more enigmatic figures in the game.
Content compiled by AnimeList.moe from publicly available sources.
