Ros

Before reaching the capital, Ros lives in the North, where she shares a bed with Tyrion Lannister and, some time later, with Theon Greyjoy.

She later settles in King's Landing and starts working in the brothel Petyr Baelish runs in the city. One of her clients is unexpected: Grand Maester Pycelle also makes use of her services.

Hoping to cheer up his nephew Joffrey, Tyrion sends Ros to him along with another girl. The boy isn't after company but a cruel experiment: he forces Ros to beat the other prostitute and sends her back to Tyrion to report what she's done.

Cersei, looking for a way to hurt her brother, learns that he has been bringing a prostitute into court against their father's wishes, and has her seized instead of Shae. After her release, Varys visits the brothel and offers her a place among his informants; it takes her a moment to recognize the eunuch.

Ros goes with Baelish to the docks where Sansa Stark waits with her handmaid Shae, and takes the chance to ask Shae to watch over the girl. When Tyrion is named Master of Coin, she hands him Petyr's ledgers, and keeps feeding Varys what she learns of her employer's plans, including a trip to the Vale of Arryn with two feather beds booked on the ship.

Baelish eventually finds out she has been spying on him and hands her over to King Joffrey, who wants to try something different: he uses her as target practice for his crossbow and kills her in King's Landing.