Heimdallr

Heimdallr The watchman of the gods. Called the shining god and whitest skinned of the gods, Heimdallr dwelt at the entry to Asgard, where he guarded Bifrost, the rainbow bridge. He required less sleep than a bird, could see 100 leagues, and could hear the watchman of the gods, could hear grass growing in the meadows and wool growing on sheep. Heimdallr kept the “ringing” horn, Gjallarhorn, which could be heard throughout heaven, earth, and the lower world; it was believed that he would sound the horn to summon the gods when their enemies, the giants, drew near at the Ragnarök, the end of the world of gods and men. When that time came, Heimdallr and his enemy Loki would kill each other.