An Andor star has been added to the House of the Dragon season 3 cast. The Game of Thrones prequel series follows House Targaryen's civil war that is known as the Dance of Dragons. Factions are split between the greens, who support King Aegon II Targaryen (Tom Glynn-Carney), and the blacks, who support Queen Rhaenyra Targaryen (Emma D'Arcy). House of the Dragon season 2 ended on a cliffhanger as both sides prepared for the Battle of the Gullet, which will be seen in season 3.