In the backstory to "Final Fantasy VII", Vincent is a Turk who is assigned to guard the scientist Lucrecia Crescent, with whom he falls in love. After a series of scientific experiments involving the cells of the extraterrestrial lifeform Jenova, Crescent gives birth to the game's antagonist, Sephiroth. Soon thereafter, Vincent himself became a test subject to experiments performed by Lucrecia's fellow research boss, Professor Hojo, resulting in genetic modification that means he will not age. If the player unlocks Vincent, he will join Cloud Strife's group to stop Sephiroth, as well as to seek revenge on Hojo.