Saria began as a Kaiser Kong, a formidable red-furred gorilla monster dwelling in the Endless Forest of Sadness. She devotedly gathered Evolution Fruits intended for her future mate. After Seiichi Hiiragi stole these fruits, she attacked him but relented upon recognizing him as her destined partner. Her affection sparked from witnessing his strength and detecting his unique scent. She later shielded Seiichi from an assault by the skeleton Xenos, intervening at the cost of mortal wounds. This sacrifice activated her final evolution, transmuting her from a gorilla into a stunning human woman distinguished by long red hair, a pink flower adornment, and a perpetually well-fitting white dress. Despite this new form, she retained the ability to shift partially or fully back into her original Kaiser Kong shape. Her lineage bestowed the unique skill "Emperor's Dignity," permitting brief action even after fatal injuries. Her bond with Seiichi progressed from enforced cohabitation to authentic love. Initially resistant to her advances due to her original form, Seiichi fully reciprocated her feelings after her sacrifice and evolution. Saria became his primary emotional anchor, capable of soothing his distress through her mere presence. She embraced non-monogamous relationships, proposing marriage to both Seiichi and Artoria upon acknowledging Artoria's feelings for him. In combat, Saria specialized in unarmed techniques like Flash Fist and Air Thrust, wielding the Pure Maiden’s Gauntlet. This artifact nullified abnormal conditions and amplified her attack and defense proportionate to her pride. Blue Shoes enhanced her agility, enabling fleeting aerial movement. She also wielded fire magic. Statistically, she operated at a transcendent level, particularly excelling in agility and physical attack power. Personality-wise, Saria demonstrated high domestic aptitude, mastering household magic from texts and undertaking wifely duties including cooking and laundry. She exhibited fierce determination to protect loved ones and social adaptability, often employing a "sure, let's go with that" attitude to sidestep conflict. Past trauma stemming from Seiichi's escape attempts was processed through open communication post-evolution. During later adventures, she accompanied Seiichi to the Barbador Magical Academy, engaging in battles against adversaries like Destra, a general of the Demon King's army. Her combat prowess remained vital to the group's efforts, though she encountered significant challenges confronting powerful foes.