In Norse mythology, the watchman of the gods.
Called the shining god, he was noted for his white skin, and he dwelt at the entrance to Asgard and guarded the rainbow bridge that connected it with earth. Endowed with extraordinary vision and hearing, Heimdall carried a horn that could be heard throughout heaven and earth; with it he would one day announce Ragnarok , the end of the world, and on that day he and his enemy Loki would kill each other.