They're our chief competitor in this region, and many others. That makes them our enemies. While I respect their business acumen, I'm obligated to try to destroy them however I can. That's business, after all.
”— Gloria Van Graff, describing her business philosophy as applied to the Gun Runners
The Van Graff family has a long history of weapons dealing in and around the New California Republic. Gloria and her brother Jean-Baptiste Cutting are the local family representatives, with Gloria doing most of the thinking and Jean-Baptiste providing the muscle.
The King called Pacer has a particular relationship with Gloria that, while never mentioned in-depth by Gloria, is reason enough for Pacer to nose around in the business of the Van Graffs. Pacer often harasses Simon during his shift, but an action like that could easily result in an easy and well-disguised political assassination.
Birds of a Feather: Gloria has an opening for a guard to aid Simon in controlling the flow of customers. Getting on her good side with little jobs could allow the Courier to delve deeper into Van Graff operations.
Heartache by the Number: Upon discovering that the Van Graffs are working with Crimson Caravan to force smaller caravans out of business, Cass wants to see Gloria suffer; either through death, or political action from the NCR.
I Could Make You Care: Veronica's quest is initiated by Gloria's greeting "Welcome to the Silver Rush..." and her line "Please let me know if anything catches your eye" which is the response to the player saying, "I'm just browsing."
pcps3xbox360 Gloria drops drained microfusion cells in place of drained small energy cells. This bug is present with every plasma pistol user, as the particular leveled list for equipping a non-player character with a plasma pistol and ammunition (WithAmmoPlasmaPistolLoot, to be precise) calls for microfusion cells in place of energy cells. [verified]