Viking warriors known as berserkers were elite Norse fighters of the Viking Age who entered a trance-like fury in battle. They were said to wear bear pelts instead of traditional armor and roared like wild animals as they charged into combat. In a state known as berserkergangr they were believed to be immune to pain and driven by an intense, almost divine rage possibly linked to devotion to Odin. Other theories suggest they may have used natural substances to achieve this relentless state. | His