Alicia Arcturus, Princess Knight of Iris, is a noble of the esteemed Arcturus family in Eos. She earned command of the Holy Iris Chivalric Order solely through her skill and effort, becoming leader of the primary military force defending the first fortress, independent of her family's status. Deeply respected by her subordinates and popular with the fortress populace, Alicia possesses pale skin, long blonde hair styled in a hime cut with spiky bangs, waist-length or longer straight hair, and blue or violet eyes. Her signature attire combines a revealing blue micro bikini or crop top armor with practical knightly elements: brown thigh-high stockings, a white-blue miniskirt (sometimes redesigned to be less revealing), blue shoulder pads, brown gloves, bracers, greaves, sabatons, a white ribbon headband, a cravat, and plate armor pieces like spaulders and tassets. She wields a sword. Serious, honorable, and proactive, Alicia often appears strict and bossy, yet harbors underlying kindness and fierce loyalty. She is unwaveringly committed to protecting allies, friends, and family, adhering strictly to knightly principles and viewing deviations with disdain. She intensely dislikes the mercenary leader Vault. Alicia possesses a fondness for innocent children and cute things, including affection for a character named Sora. She serves as personal bodyguard to her cousin, Princess Prim, whom she views and refers to as a younger sister, reflecting profound familial devotion beyond mere duty. A defining act underscores her character: when nuns from her kingdom were taken hostage, Alicia voluntarily surrendered herself to secure their safety, prioritizing their lives above her own freedom. This self-sacrifice led to her capture, confinement, and subsequent mind control, making her one of the earliest victims in the mercenary group's plan for a new empire. Her status as a knight, noble, and Prim's guardian renders her a potent symbol of resistance and tragedy within the conflict. While she enjoys mutual respect from subordinates, she remains unaware of Minister Beardsley's low opinion. Her story emphasizes duty, sacrifice, and betrayal's consequences in a war-torn setting.