Mephisto

 is an angry merchant who was supposed to appear Hub in 2161.

Background
was supposed to be one of several merchants arguing with Martha Rastello about the quality of the caravan services.

Other interactions

 * would voice their displeasure at the Water Merchants' quality of service.

Appearances
was cut from Fallout, though the dialogue file can still be found in master.dat. The merchants were likely going to fill the large amount of empty space and buildings inside the Water Merchants' quarter.