The second created exarch of The Silent One, Sassriss is a parasite who feeds on others' memories. After an extremely confusing series of events regarding her, Bel, and Zo-Att, Sassriss turned to Verda, seeking her maker. Not finding him, she stopped for a meal; Twist, the Primal Spirit. She found her venom to be a corruption to him, but left before finding out of the Blight Spirits her actions created.
Since then, Sassriss was reunited with her Master, who rewarded her loyalty by establishing her as the figure head god of the Yuan-ti.