Wang Dang Atomic Tango

 is a quest in Fallout: New Vegas.

Quick walkthrough

 * Beatrix is found in the Old Mormon Fort. You either need to convince her with a speech check, barter check, or you can give her a bottle of Absinthe.
 * The "smooth talker" can be either Santiago or Old Ben. To recruit Santiago, just ask. For Old Ben, the player must have either the Confirmed Bachelor or the Black Widow perk.
 * The sexbot, Fisto, must have a programming holotape made by Ralph. Then, hack the terminal (science 50), (or lockpick the cabinet (lockpick 50) for the passcard) to program Fisto.