Viserys the Younger
Rhaenyra and Daemon's younger son, clutching an egg that will not hatch — sent oversea for safety as the Dance closes in.
The fuller tale
Rhaenyra and Daemon's younger son carries his grandfather's name and, fittingly, an unhatched dragon's egg he keeps close through the war's worst years — a boy defined, for most of his brief appearance in the histories, by an egg that stubbornly refuses to quicken no matter how carefully it is kept warm.
As the fighting closes in on Dragonstone and the family's other strongholds, he is judged too young and too vulnerable to keep near the war's center, and is sent overseas for his own safety — one small, sensible mercy in a family history otherwise defined by the refusal to spare its children anything.
The page and the screen
Both tellings keep Viserys the Younger a minor, largely symbolic figure — his unhatched egg functions almost identically in each version as a quiet emblem of a future the war may or may not permit him to reach, and neither the show nor the book gives him significant independent action beyond his eventual departure from Westeros.
Where they stand, season by season
Their fate — if death has found them, it is written here. Open at your peril.
The chronicle records no death for this soul — they are living when the tale leaves them, or their ending is a page the maesters have yet to turn.