Lady Sassyfur is Biana’s yeti stuffed animal companion. She was originally named Betty-the-Yeti by Elwin but later changed to her current name, Lady Sassyfur, by Biana. Elwin gave Lady Sassyfur to her while she was healing from the injuries that Vespera gave her in Vespera's Nightfall. Elwin first mentions Lady Sassyfur in Flashback, when he is informing Tam that all the cool people sleep with stuffed animals.