Rosa, also known as Natalya Andreyevna Rostova, is a noble-born young woman from Ursus who survived the tragic Chernobog incident. Once a student council president of an Ursus middle school, she joined Rhodes Island and earned a solid reputation in the Logistics Department before applying to become a sniper operator. Despite her aristocratic background, Rosa is mature, polite, and driven, carrying the weight of her past with quiet resilience. She wields a modified siege engine as her weapon and strives to protect others while confronting the trauma and guilt of her experiences during the incident.