Heimdallr is a figure from Norse mythology known as the watchman of the gods. He is described as having keen eyesight and hearing, allowing him to see and hear events occurring far away. Heimdallr guards the Bifrost, the rainbow bridge that connects the realm of the gods, Asgard, to the human world, Midgard. Heimdallr is also associated with the end of the world, known as Ragnarök, where he is foretold to blow a horn to signal the onset of the battle. He is the son of Nine Mothers, and his role emphasizes vigilance and protection in the mythological narrative.