Viking leaders, often known as jarls or chieftains, played a crucial role in the Norse society during the Viking Age. They were responsible for making important decisions, leading raids, and managing their communities. These leaders were typically wealthy and held power through a combination of military strength and social influence. The most famous Viking leader is Leif Erikson, who is credited with being one of the first Europeans to reach North America. Other notable leaders include Ragnar Lothbrok and Harald Hardrada, who are celebrated in Norse sagas for their adventurous exploits and battles.