Ivar the Boneless was a legendary Viking leader and a son of the famous warrior Ragnar Lothbrok. He is known for his strategic mind and military prowess during the 9th century. Ivar played a significant role in the Viking invasions of England and is often associated with the Great Heathen Army, which aimed to conquer the Anglo-Saxon kingdoms. Despite his nickname, which may refer to a physical disability, Ivar was a formidable warrior. He is remembered in various sagas and historical texts, highlighting his cunning tactics and leadership skills. His legacy continues to influence popular culture, including television series like Vikings.