Aegon IV, also known as Aegon the Unworthy, was a king of the Targaryen dynasty in the fictional world of Westeros. He ruled from 172 AC to 184 AC and is often remembered for his controversial decisions and personal excesses. His reign was marked by political strife and the weakening of the Targaryen family's power. Aegon IV is infamous for legitimizing his numerous bastards, which led to significant conflict among the noble houses. His actions contributed to the eventual decline of the Targaryen dynasty, setting the stage for future turmoil in the realm, including the Dance of the Dragons.