 Her legends appear in the medieval era, as angry, ferocious form of mother goddess Parvati take the avatar as Durga or Kali.She manifests as a goddess with eight or ten arms holding weapons and skulls of demons, and is astride on a tiger or lion.In Skanda Purana,Devi Bhagbhatpuran and other purans Parvati assumes the form of a warrior-goddess and defeats a demon called Durg who assumes the form of a buffalo.