Vulcatrix, Mother of Salamanders, was one of the ancient enemies of Sigmar.
When Grungni and Grimnir were freed from their imprisonment, Grimnir demanded the God-King accept his warrior oath and choose a mighty enemy for him to slay. Grimnir was sent forth to the Realm of Aqshy to fight Vulcatrix. Fyreslayers say that Grimnir won the battle, but upon Vulcatrix's death, she erupted, leveling mountains and scattering the two gods across the realms. The remains of Grimnir from this great battle were turned into Ur-gold. Vulcatrix's descendants, the Magmadroths, are still ridden by the Fyreslayers today.