Vincent started his career as a military man in order to protect people. As part of the Knight Errant special forces unit he was able to do his part in protecting those that could not protect themselves.
He was a member of the Knight Errant unit assigned to protect the Cabrini Refuge in Chicago. While there he got to know and respect the Ghouls who had fought fo so long to simply have the right to be treated as human. He was appalled when he learned that Knight Errant would not be renewing their contract to protect the Ghouls, and did what he could to help them when he was forced to leave, stashing arms and equipment fot the Ghouls to defend themselves.
Though a little disheartened he still remained loyal member of Knight Errant, taking on increasingly difficult and risky operations, gaining the notice of certain Knight Errant officials. He was elevated to a Firewatch unit and took part in the extermination of the Insect Spirit Hives around the UCAS. When Ares discovered the largest hive yet in Chicago, his team is one of those assigned to destroy the hive.
That is when Vincents life changed forever. Rather than being destroyed, the insects began a rampage through Chicago. A wall was hastily errected, and the Chicago Conatinment Zone was created. Riots broke out and anyone attempting to flee was shot by the soldiers manning the walls. What then followed was almost three years of hell for those who became trapped in what became known as Bug City. With the UCAS government hiding the event as a VITAS outbreak, the people of Chicago were left to fend for themselves among the monsters that had claimed their streets. When a Tactical Nuclear Weapon destroyed the main hive a few days later, the plight of the citizens improved only slightly. Vincent remained in contact with Knight Errant, while undertaking seek and destroy missions behind the wall. During this time he heard of the atrocities committed at The Wall by soldiers he thought he knew. Every day he saw the suffering of those around him, and did his best to do his part to help as much as he could. At times of need he would find refuge with the Ghouls, who he found to be more human than the roving warlords that had claimed various parts of the city. During his time behind the walls he did many things he wasn't pround of, and many innocent people died at his hands in order to save hundreds more.
The day that meant freedom for the people of Bug City is one that still haunts Vincent. He had heard rumours that Ares might be planning something, but he never dreamed of the full-scale slaughter that was Operation Extermination. Weilding an astral plague, the Ares strike teams descended on th Containment Zone and systematically wiped out every hive they came accross. At first Vincent applauded their actions, as they destroyed all the insect spririts they came accross. Then he saw the Devil Rats that had died from the plague. As realisation came to him he rushed to the Cabrini Refuge. Seaking his friends, he found only death. Ghouls lay dead and dying from the plague Ares had unleashed. Men, women, the young and the elderly, the plague killed them all. He found his friend who had sheltered him for the last few years, a miagician who had seen what was happening and taken steps. Grasped in his dying hands were two vials. One contained the Ghoul virus, taken from his own blood and the the other a sample of the astral plague that was killing them. His last message was simple and horrible. Find those who did this and visit this horror upon them.
Once the Bugs were cleared out and the Containment Zone lifted, Vincent returned to Knight Errant. While members who took part in Operation Extermination were hailed as hero's, Vincent and his men were deliberately ignored. They were separated and relegated to protection work. Vincent himself was set as a bodyguard for a General Robert Winchester. While guarding him Vincent learned that he was the UCAS general responsible for the maintanance of The Wall, and that he had used that position to gain favour with Ares so that he could join the corporation. His last act that sealed his agreement with Ares was ading them in carrying out Operation Extermination by feeding misinformation the UCAS government, so that Ares could act withou restraint.