Visenya and Rhaenys Targaryen were the sisters of Aegon the Conquerer. Both were warriors and dragonriders in their own rights, but their personalities were much different. Visenya, the eldest of the three siblings, was more passionate than her sister, but with a dark and unforgiving side. Rhaenys, the younest of the three, was slender and graceful, with a mischievous aspect to her personality than Visenya lacked.
When the War of Conquest began, Rhaenys and Visenya rode to war with Aegon on their dragons, Vhagar and Meraxes. The only time the three dragons were unleashed together was at the Field of Fire. After the Conquest Aegon left the ruling of the Seven Kingdoms primarily to his sisters.