Based on George R.R. Martin's novellas, HBO is currently working on a "Tales of Dunk and Egg" series that will chronicle the exploits of Duncan, or "Dunk," a nearly seven-foot-tall rookie hedge knight, and his spunky, bald young companion, known as "Egg." It turns out that the latter is actually Aegon V Targaryen, the Targaryen prince who ascends to rule Westeros as a king.