Alexia Midgar, second princess of the Midgar Kingdom, attends the Midgar Royal Spellsword Academy. She entered a fake romantic relationship with Cid Kagenou to provoke her fiancé, Zenon Griffey, but eventually developed genuine feelings for him, drawing her into the hidden war between the Cult of Diablos and Shadow Garden.
She possesses long silver or platinum white hair, often styled in pigtails secured by a large black ribbon, and red or aubergine eyes. Her academy uniform features a gold-accented blazer jacket, white dress shirt, navy-blue waist belt, plaid skirt, white thigh-high socks, and cross-laced knee-high boots. Casual wear includes turtleneck sweaters, shorts, thigh-high stockings, and sneakers; formal occasions see her in ruffled dresses. Her magic typically manifests a light yellow-green aura, though it briefly shifted pale pink during an emotional confrontation with Rose Oriana.
Initially presenting as well-mannered, Alexia harbored a condescending and abrasive personality, especially toward Cid. She frequently tossed coins on the ground, offering payment to act as her "pooch," reflecting her belief people could be bribed—a behavior rooted in envy toward her sister Iris Midgar and resentment over constant comparisons. Interactions with Cid gradually revealed a softer, compassionate side. After her kidnapping, she demonstrated genuine concern for Cid's safety and loyalty to those she cared about, risking her life to protect them. Following the Bushin Festival, she resolved to become an active participant, shifting focus from swordsmanship alone to studying politics, economics, law, engineering, finance, and ancient linguistics to inform her actions and wield her sword purposefully.
Her swordsmanship is orthodox and initially assessed as "mediocre," partly due to imitating Iris's incompatible style. Her magic is similarly average, though she possesses a mana reservoir quantified at 1303 units. Rigorous training inspired by Cid's exercises and Shadow's swordsmanship granted notable physical resilience, allowing her to withstand significant blows and momentarily resist attacks from powerful foes like Zenon. Alexia excels in intelligence and intuition, analyzing interpersonal dynamics and political landscapes more effectively than Iris. She detects hidden strengths, recognizing Alpha's superiority over Iris during the Sanctuary infiltration, though this innate ability is less refined than specialized powers like Beatrix's "warrior detection."
Her relationship with Cid evolved from manipulation to authentic affection, though he rejected her romantic advances. She remains fiercely jealous of rivals like Sherry Barnett. Alexia formed a friendly rivalry with Rose Oriana and an adversarial dynamic with Beta (disguised as Natsume Kafka), though they allied to protect Cid. Her bond with Iris shifted from envy to protective concern after witnessing Iris's mental instability and Cult of Diablos corruption. She collaborated uneasily with Claire Kagenou to investigate the Cult's academy infiltration.
Her chronological development began with an arranged betrothal to the distrusted Zenon. Faking a relationship with Cid led Zenon to kidnap her for blood experiments. She escaped with Millia's help, nearly recaptured until Shadow intervened and eliminated Zenon. Post-rescue, Alexia grew determined to understand Shadow's ideals. During the Sanctuary infiltration, she investigated church corruption alongside Rose and "Natsume," uncovering ties between the Cult and the Divine Teachings Holy Church. After Shadow destroyed the Sanctuary, she allied with Rose and Natsume to protect Cid. In the Bushin Festival arc, she investigated Rose's disappearance and deduced King Raphael Oriana's brainwashing by the Cult. She later witnessed Rose's bloodied confrontation with assailants but was swiftly incapacitated.
In Volume 5, Alexia investigated Claire Kagenou's disappearance, discovering ancient texts related to a collar. She encountered Shadow during a terrorist attack at the academy but was misled about his intentions. Teaming with Claire, she investigated the Cult's presence, leading them to the Forbidden Library. There, they translated a book revealing Fenrir's existence before being ambushed by a Cult-affiliated librarian; Alexia was incapacitated by a drugged scent until Shadow intervened and defeated the librarian.
Trivia notes include the Greek meaning of her name ("man's defender") and her imitation of Cid's habits, like slapping a towel against her crotch in saunas. She is one of the few witnesses to Shadow and Aurora's battle during the Goddess's Trial and later detected connections between Cid and Shadow without confirming their identities.