Viirsa Yuriev was the sister of Helena the Grey and once served under Captain Axikasha Keiran. She and Ax grew up together, Viirsa often the voice of reason when Ax's reckless temper got the better of her. After Ax's disappearance, Viirsa too left Libaterra in search of answers. What she found was betrayal, slaughter, and the Clergy of Mardük. She eventually came to serve the Lady Varalia Earthhaven, and joined the Grand Alliance in order to spy for her. She fell in love with Hector Blackwell, and became pregnant with his child. She died in Aison, shortly after giving birth to Kaisa Blackwell. Her body was put in a cryopod by Syrese Frostvale by the time the Great War ended, and Syrese and Hector hope to bring Viirsa back to life.