Valknjöggr - A great dragon appointed by Odin to watch over Valhalla, whilst the Einherjar prepare for Ragnarok. It is believed that this creature was crafted by the bark of Yggdrasil, a fingernail from the frost giant Ymir as well as Odin’s own wisdom, Thor’s strength, and Tyr’s courage and loyalty. Once the soul of a slain hero is brought to Asgard they are judged by Valknjöggr before they are allowed passage to the great hall of the slain, Valhalla
