Viserys I Targaryen

Viserys I Targaryen was the king of Westeros prior to the events depicted in 'La Casa del Dragón.' He is the father of both Rhaenyra and Aegon II, and his death sets off a fierce battle for succession between his children. His decisions and legacy play a crucial role in the unfolding drama of the Targaryen civil war, highlighting the complexities of loyalty and legitimacy in the royal lineage.