Vance (Fallout: New Vegas)

 and his wife Vikki were "master criminals" before the Great War. The Vikki and Vance Casino in Primm commemorates their "crime spree". The player can hear the story of Vikki and Vance by consulting Primm Slim in the casino. Slim's account implies that Vikki and Vance were in fact small-time white collar criminals.

According to Slim, Vance purchased a high-quality 9mm machine gun immediately prior to his death. Slim invites the player to view the weapon on display at the center of the casino, but the case is empty. Asking about the missing weapon will reveal that Slim has a corrupted memory block; the player may pass a Science check to obtain a side-quest that leads to Vance's 9mm Submachine Gun.

Appearances
Vance is only mentioned in Fallout: New Vegas.