Kali is a Hindu goddess associated with death and destruction. The name Kali means "black", but has by folk etymology come to mean "force of time (kala)". Despite her negative connotations, she is today considered the goddess of time and change. Although sometimes presented as dark and violent, her earliest incarnation as a figure of annihilation still has some influence. More complex Tantric beliefs sometimes extend her role so far as to be the "ultimate reality" or Brahman. She is also revered as Bhavatarini (literally "redeemer of the universe"). Comparatively recent devotional movements largely conceive Kali as a benevolent mother goddess.
Kali is represented as the consort of god Shiva, on whose body she is often seen standing on. She is associated with many other Hindu goddesses like Durga, Bhadrakali, Sati, Rudrani, Parvati and Chamunda. She is the foremost among the Dasa-Mahavidyas, ten fierce Tantric goddesses.
As Kali, the Goddess fought with Raktavija, the lord of the Asuras (Demons). But for every drop of Raktavija's blood that touched the Earth, a thousand demons sprang up. Kali in Her divine madness solved this by licking up every drop of his blood with Her tongue, and won the day. Wild with joy, She continued to dance her dance of destruction until the gods begged Her to stop; but She did not listen. Finally Her husband Shiva came to implore Her--still crazed, She did not recognize Him and instead threw Him on the floor with the corpses and danced over Him. How badass is that?