Azula's relationship with her father, Fire Lord Ozai, plays a significant role in shaping her character development throughout the series. As the favored child of Ozai, Azula constantly seeks his approval and validation, which fuels her drive for power and perfection. Growing up in a toxic environment where she is constantly compared to her brother Zuko and manipulated by her father, Azula develops traits of cunning, ruthlessness, and a need for control. This relationship also contributes to her struggles with trust, empathy, and maintaining healthy relationships with others. Ultimately, Azula's dynamic with Fire Lord Ozai influences her descent into madness and her eventual downfall.