Vhagar is first ridden during the Targaryen conquest when she is the dragon of Queen Visenya, the sister-wife of Aegon I. Many years later, after going riderless after Visenya's death, Vhagar is claimed by Laena Velaryon. Episodes one and two of "House of the Dragon" take place before Laena has claimed the dragon, but she discusses the dragon and its whereabouts with King Viserys. She revealed that most believe Vhagar is nesting somewhere in the Narrow Sea, possibly near Spice Town. It's clear she has a longstanding interest in the dragon. Viewers finally see Laena on her dragon in episode six. But when Laena's labor fails, she has Vhagar kill her.
In "House of the Dragon" episode seven, Prince Aemond (Leo Ashton) claims Vhagar as his own, though he loses an eye in the process. But that means that the greens have the largest and oldest dragon left on the board. Vhagar kills Prince Lucerys and his dragon Arrax in the season one finale.
