In Norse mythology, Ragnarök which in Old Norse translates to "Doom of the Gods" is the battle at the end of the world. It is to be fought between the gods or Æsir, led by Odin; and the fire giants, the Jötnar and other monsters, led by Loki and Surtr. Not only will most of the gods, giants, and monsters die in this battle, but almost everything in the universe will be destroyed.