Margaret Liones is the first princess of the Kingdom of Liones, the eldest biological daughter of King Bartra Liones, and the older adoptive sister of Elizabeth Liones. She is also the older sister of Veronica Liones. As a member of the royal family, Margaret carries herself with a gentle, kind, and graceful demeanor, often acting as a stabilizing presence within the castle. She firmly believes that the Seven Deadly Sins are the greatest group of knights ever assembled by her father and that the Holy Knights who attempted to overthrow the kingdom are traitors, a conviction she shares with Elizabeth. Margaret's motivations are rooted in a deep sense of duty and selflessness. She consistently prioritizes the well-being of her kingdom and her family over her own safety, reflecting a commitment to being a supportive and reliable figure. Her loyalty to her father, her sisters, and the kingdom itself drives her actions throughout the series. In the story, Margaret plays a key supporting role. She is imprisoned during a coup against her father, which places her in a position of vulnerability. Her personal story is closely tied to the political turmoil of Liones. Her deep and mutual bond with the Holy Knight Gilthunder is a defining aspect of her character, often serving as a catalyst for her involvement in the broader conflicts of the kingdom. The mage Vivian also impacts Margaret's safety through manipulative actions aimed at the royal family. Margaret's development sees her transition from a princess in peril to a more active participant in her own fate. She later marries Gilthunder and becomes the mother of their son, Chion. Margaret does not possess any superhuman combat abilities, but her significance lies in her role as a human anchor within a world of legendary knights and magical beings. Her presence highlights the political stakes and the human cost of the holy war, representing the enduring spirit and leadership of Liones.