Portal:Fallout: New Vegas
He was transferred by Caesar to the Frumentarii following a brilliant tactical maneuver, when in a battle against an unnamed tribe he broke ranks and led his squad through a hole in the enemy defenses, capturing the tribe's chieftain. While his centurion wanted him crucified for disobeying orders, Caesar saw potential in the young officer and found other uses for him. By 2281, Vulpes is the leader of the Frumentarii and the mastermind behind many of the Legion's intrigues, notably the conquests of Nipton and Camp Searchlight
The game takes place in 2281, four years after the events of Fallout 3, and thirty-nine years after Fallout 2. The Courier, the player's character, is meant to deliver a package from Primm to New Vegas. However, the Courier is intercepted by the Great Khans and Benny, who leave the Courier for dead in a shallow grave.