House of the Dragon's third season is drawing increasingly direct comparisons to HBO's Succession, as the fractured Targaryen dynasty mirrors the Roy family's cutthroat corporate power struggle. Where the show has long centred on the rivalry between half-siblings Rhaenyra and Aegon for the Iron Throne, Season 3 has widened the field of contenders within the Greens faction, sowing confusion over the line of succession and weakening their position just as the Dance of the Dragons intensifies.

Episode 4, "Tumbleton," introduces fresh claimants to the throne, including Daeron, Alicent and Viserys's youngest son, who is urged by Ormund Hightower to press his own claim after his two elder brothers vanish. Backed by the Hightower army and his dragon Tessarion, Daeron becomes a genuine threat to Rhaenyra, while Helaena's unborn child adds a further potential heir. With Aegon, Aemond, Daeron and the unborn baby all holding possible claims, the Greens' internal rivalries are splintering their power at a critical moment in the war.