Paulson

 is a cowboy who appears in the Fallout 3 add-on Mothership Zeta in the year 2277

Background
After he is released from his cryo-sleep, he is obsessed with getting revenge "on every last one of those bastards". When he and the other abductees capture an Alien, he shoots it. After a speech check or using the Black Widow perk you can find out that his reasons for revenge are because he was separated from his wife and son.

Effects of player actions
You can ask him to accompany you in destroying the generator in the Hangar area of the spaceship, and as mentioned above you can use a Speech check or the Black Widow perk to find out why he hates the aliens so much.

Appearances
appears only in the Fallout 3 add-on Mothership Zeta.