In Norse mythology, the valkyries decided the fate of men in battle and conveyed the spirits of the fallen to Valhalla, to dwell with the god Odin. Often associated with ravens, swans, and horses, over time the valkyries have been portrayed as strong, female figures, callous and monstrous creatures, and sometimes both at the same time.

Valkyrja is the Old Norse word from which "valkyrie" is derived. In Norse mythology, a valkyrja (or valkyrie) would choose the men who would die in combat. The valkyries (who were always female) would bring the men they had chosen to Odin in Valhalla — the hall of the slain — where they would prepare for the battles of Rangarök.