Prince Aegon II Targaryen was a key figure in the history of the Targaryen dynasty in Westeros. He was the son of King Viserys I Targaryen and Queen Alicent Hightower, and he played a significant role during the Dance of the Dragons, a civil war between rival factions of the Targaryen family over the Iron Throne. Aegon II claimed the throne after the death of his father, leading to a brutal conflict with his half-sister, Princess Rhaenyra Targaryen. His reign was marked by political intrigue and battles, ultimately resulting in his downfall and the end of his rule, which had lasting effects on the Targaryen lineage.