Heimdall

Heimdall grew up in Asgard alongside his younger brother Baldur, and as an adult, he was given the Gjallarhorn by his father and was tasked with protecting Asgard and warning the Aesir when Ragnarök begins. During his years of service, Heimdall engaged in many battles and fights, and was never once touched or harmed thanks to his enhanced senses. On one occasion, Heimdall participated in the pacification of a rebellion being thrown by the Dwarves who resided in the realm of Svartalfheim. He personally branded Durlin, the leader of the rebellion, as retribution for his treachery. At some point, Heimdall tamed a powerful Gradungr and named it Gulltoppr, with the beast becoming his personal mount.