Many characters depicted in the 'Vikings' series are inspired by real historical figures from the Viking Age, although creative liberties are often taken for dramatic purposes. Ragnar Lothbrok is one of the most prominent figures portrayed, a legendary Norse hero believed to have been a king of Denmark and Sweden, known for his exploits and raids in England and France. Lagertha, portrayed as Ragnar's wife, is also rooted in legend, with historical references suggesting she was a warrior shieldmaiden. Bjorn Ironside, one of Ragnar's sons, is another character grounded in history, reputed to have led raids into the Mediterranean and established settlements. While the series blends fact and fiction, it draws upon sagas and historical accounts that highlight the bravery, cunning, and complexity of Viking leaders and warriors. This interplay between history and storytelling adds depth to the series, allowing viewers to engage with the legendary aspects of Viking culture while acknowledging their historical roots.