Easy Pete used to be a prospector looking for working technology, chems and guns to sell. Pete once hit a "...real good claim out east by the river", but was run off the land by raiders. He eventually got tired of the prospector life and decided to settle in Goodsprings, where he now watches over a herd of bighorners.
"They're slavers, led by a guy named Caesar. Or Caesar. Not sure how you're supposed to say it. A couple of years ago they tried to take over Hoover Dam, but the NCR beat them back. The NCR didn't - or couldn't - finish the job, though. The Legion's got its strength back and is getting ready for another round at the Dam. My money's still on the NCR winning, but you never know. We've been hearing stories about Legionaries on the Nevada side of the river, so keep a gun handy. You don't want to get caught by them."