A former Turk, Vincent was charged with protecting the group of scientists involved in The Jenova Project: Gast, Lucrecia Crescent and Hojo. He fell in love with Lucrecia, but it went unrequited when she chose Hojo instead. After the birth of Sephiroth, Vincent confronted Hojo, only to be shot and put in a state of permanent agelessness by the mad scientist. He was discovered locked in a coffin by Cloud under the ShinRa mansion in Nibelheim.
Vincent apparently kept tabs on the development of Kadaj, Yazoo and Loz -- as he was able to inform Cloud of their origins after saving him from a disastrous battle at the Sleeping Forest. Vincent surprised Cloud when admitting that he had never tried to find forgiveness for his sin of failing Lucrecia, the woman he loved, which spurred the swordsman to pick himself up. He was also the only member of AVALANCHE not to have a cellphone, which shocked Marlene so that she almost scolded him for it.
Vincent traveled to Edge to, thus, buy a phone -- and also assist his former comrades in battling Bahamut Sin.