Cornelia li Britannia displays an intense dedication, initially to serving Britannia and later the UFN, often coming across as icy and unyielding. In the past, she showed a ruthless willingness to sacrifice lives for political gains, demonstrating a cold pragmatism. However, the loss of her beloved sister Euphemia and her involvement with the Black Knights have visibly softened her stance. While still fiercely loyal and determined, Cornelia has developed a more compassionate side, particularly when it comes to the well-being of her soldiers and allies. Her relationship with Guilford serves as a prime example of this shift, as she now prioritizes protecting those under her command above all else.