Heimdall

Heimdall (in other versions Heimdallr or Heimdallur) is the Aesir god who possesses the resounding horn Gjallarhorn, owns the golden-maned horse Gulltoppr, has gold teeth, and is the son of Nine Mothers. Heimdallr is attested as possessing foreknowledge, keen eyesight and hearing, is described as "the whitest of the gods", and keeps watch for the onset of Ragnarök while drinking fine mead in his dwelling Himinbjörg, located where the rainbow bridge Bifröst meets Asgard.

Trivia

 * During Ragnarök, Heimdall is destined to kill Loki, but also be be killed by the latter as well.
 * Heimdall is the only Norse god to have more than one mother and no father.