Heimdal is one of the Aesir, and is the watchman of the gods. He guards Bifrost, the Rainbow Bridge that leads to Asgard. Heimdal can see ahead 100 miles, and can hear the grass grow. He owns the horn Gjall, which is so loud that it can be heard all over the world. Heimdal is the son of nine mothers and Odin. He lives in Himinbjorg in Asgard.
In art, Heimdal is depicted as a man with golden teeth.