Odin is a siginificant being in the Norse and Germanic folklore and the ruler of Asgard....
In the old days, Odin loved to cause conflicts and shifts of power.
He once aided Harald, a Danish King, instructing him in tactics and achieving victories for years.
In the king's final battle, however, Odin took the place of Harald's charioteer and drove the king to his demise...
With the threat of Ragnarok, the death of all gods, Odin built the Valhalla, a great hall of the "heroic dead".
Odin would then gather heroes and warriors who were slain in battle, and bring them to Valhalla so they would fight alongside the gods on the Vigrid plain, in an attempt to strengthen and save the gods in the final battle against the frost giants at the time of Ragnarok...
Odin was killed by a wolf, Fenrir, a monstrous offspring of the Loki and the frost giantess Angrboda...