Yes Man

Yes Man is an AI program that serves as Benny's assistant in 2281. He is an integral part of Benny's scheme to take control of New Vegas. Yes Man appears to be a modified Securitron. More specifically, his personality program has been put into a PDQ-88b Securitron; although he may later assist the Cywren in the "independent" New Vegas options for the game's ending as the Lucky 38's mainframe.