An amurrun doctor graduated from Singsong, whom has always made an effort to aid people despite what people might think of her roguish ways. While she grew up on the streets of the oft crime-riddled port city, she adapted to the city’s ways and also later got accepted into and graduated from the Singsong Medical Academy.
Roslyn eventually travelled to Friedport to seek her fortune. On the ships on the way there, she became witness to the attempted robbery of The Fat Tiger by the Queen of Grog. Managing to steal the item back, she earned the respect of everyone involved. Magnus Strike, a witness to the events, went on to hire her as a retainer while he was getting accustomed to the relatively lawless city of Friedport. It was here she met and joined the The Landcrab Plot.
After the deed on the ship, she was hired by the Fat Tiger to hunt for the famously stolen and missing Vestitur, which he believed to be in the area. Outclassing her fellow thieves Gozi Windaji and Vendy Vendetta Rapidly also employed by the Tiger to do the same, she initially drew the duo’s ire. Roslyn single-handedly managed to infiltrate heavily guarded and hidden areas, and exfiltrate unnoticed, unharmed and with new useful leads in hand.
On Bigthraun island, Roslyn, Magnus and the newcomers encountered the pirates of the Queen of Grog as they hunted for the Vestitur Relics. It was here they recovered the Vestitur Triparte Crown. After Gozi and Vendy later almost robbed the newcomers of the crown, it was revealed the duo was after buying their own freedom from the Fat Tiger’s contractual obligations by recovering the relics, which Roslyn conceded to helping with. As part of uncovering the remaining Landcrab Plot, the Vestitur Tablet was tracked down, though it was unfortunately destroyed.
Despite these achievements, as well as winning the Summer Games and earning the title of Herō of Friedport, Roslyn has largely avoided the public eye. It is believed she now sails with the Queen of Grog, after having earned her respect.