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.
A soul of House Targaryen, born at Dragonstone.
The fuller tale
Their story
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.
How it ends for them
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.
Their chapters, book by book
Where the page and the screen part
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.
Their journey
Where the two tellings send them to the same place the road runs whole; where they part, the screen keeps the left and the books the right.