Vortigern was a 5th-century British king, often associated with the early history of post-Roman Britain. He is known for his role in inviting the Saxons to Britain, which led to significant changes in the region's political landscape. His reign is often depicted in historical texts as marked by conflict and instability. In various accounts, Vortigern is portrayed as a controversial figure, sometimes seen as a traitor for his alliances with the Saxons. His story is intertwined with legends, including the tale of the Red Dragon and the White Dragon, symbolizing the struggle for power in Britain during that era.