In Norse tradition, Heimdallr serves as the guardian of the Bifröst, the rainbow bridge connecting the mortal realm to Asgard. He possesses keen senses and is known for his ability to hear grass growing and see great distances. Heimdallr is responsible for signaling the Götterdämmerung (Ragnarök) with his horn, Gjallarhorn, alerting the gods to impending danger. His role symbolizes vigilance and foresight, reflecting a deeper connection to themes of protection and readiness in Norse beliefs.