Yeah, it's part of the
Aba Daba Honeymoon questline--you can ask Motor-Runner about the history of Vault 3 and sell him drugs from your personal stash at a slight markup.
It's a shame Motor-Runner's dialogue is bugged to the point where interactions with him are limited. Also, there is a lot of cut dialogue for the other Fiend commanders suggesting that the developers intended for them to be interacted with to a small extent--Violet and Cook-Cook are both off their rockers (big surprise), Nephi is rude, menacing, and has unpleasant things to say about the ghoul in the Aerotech Office Park.
Yeah they're great guys. First playthrough I killed them all and then learned more about them, which is when I regretted it. Then I played another character who allied with them.
I dug the fact that the Powder Gangers were a loose conglomerate of splinter factions.
There was Eddie and his crew holed up in the prison. Some were assholes like Scrambler while others, like Carter and Hannigan, were more sympathetic--just small time crooks who got caught up in the prison break and stuck around for the simple fact they had nowhere else safer to go.
Then you had small roving groups of them roaming around, doing their own thing and causing trouble... Joe Cobb and his boys, Chavez's crew, the guys who sacked Primm, Boxcars and the group from Nipton, etc.
Finally, you meet up with Samuel Cooke and his gang and find they're squabbling over leadership and direction.
I really appreciate the depth these guys were given and the fact that they were something more than just another bunch of nameless mooks to mow down.
