Heimdall

Heimdall is the watchman of the Bifrost — warden of the Rainbow Span, the gate-hub through which all travel between the Nine Realms must pass. He neither sleeps nor blinks; his senses are tuned so fine, the old records say, that he can hear grass grow on Midgard and wool grow on a sheep, and see to the edge of the galaxy by day or night.

He stands at the one chokepoint that matters. Whoever would move an army between realms must pass beneath his eye, and so the security of the entire empire rests, in the end, on a single sleepless sentinel and the great horn at his side. When he finally sounds Gjallarhorn, every god in the Nine Realms will know that the end has come.

The Watch

TODO: Heimdall's enhancements, his long cold vigil, the secret of his birth, and his foretold final duel with Loki.