Sybil Danning is an Austrian actress who made her mark on cinematic history throughout the 1980s as a Femme Fatale. Aside from exploitation films like Chained Heat and Reform School Girls, Danning is best remembered for her role as Stirba, werewolf/witch queen villainess from the 1985 film, The Howling II: Your Sister is a Werewolf. As a pastiche of her earlier work, Danning has also appeared as Gretchen Krupp in the false 2007 trailer of Werewolf Women of the SS, which appeared on the Quentin Tarantino/Robert Rodriguez double-bill feature Grindhouse.