Shion Uzuki is the main protagonist of the Xenosaga video game series. She is a brilliant scientist and the chief engineer of Vector Industries' First R&D Division, responsible for the creation of the android KOS-MOS. Throughout the series, Shion is portrayed as compassionate, intelligent, and curious, though she is haunted by her tragic past. Her journey revolves around unraveling the mysteries of the Gnosis, the Zohar, and her connection to KOS-MOS, making her central to the series' unfolding narrative.