Mary Rosa was a young victim who was kidnapped by a secret organization, which tortured and experimented on her to create a superhuman soldier. They augmented her with high-tech Mechanical and robotic parts and integrated them into her human body. After years of upgrades and intensive training, the secret organization designated her as one of the most dangerous projects they've created; “Y: Unstable Prototype Intended to Annihilate.” Or “Yupia”.