A typical raider, slightly easily influenced by friends.  They weren't BORN into the raiding lifestyle, just after one too many beers and a couple of bad decisions, they found themselves in over their head and owing money to the Goodneighbor mob.  They turned to the minutemen who couldn't help them, and thus turned to the only other major power they could find... the raiders.  The next thing they knew, they were shooting up med-x and huffing jet, ambushing caravans and harassing farmers.  Every now and again, they see someone they used to know and think, "What am i doing with my life?" and then they remember... they'd have no life if they tried to go home.  The mob is still waiting.  So they keep running.  They keep raiding.  They keep living the only way they know how, one bloodsoaked nightmare at a time.