Background
What could you say about Cradda? Not much. If you were writing about it in a gazetteer, you'd probably put down "Outer Rim, mountainous, temperate, sparsely populated, major economic activities: subsistence farming, mineral extraction," just so you could say you were complete in your responsibilities and move on to a more noteworthy world. It had been on the map once, for a short blip when the Empire found chromium deposits close to the surface on the Northern continent and strip mined the lode, leaving as quickly as they came. That was about 10 years ago, give or take. It had been hard since then, as the lode was under much of the arable land, which was few and far between on Cradda. Mountainous, if you remember the gazetteer.
Rennick grew up in Skegmoor, one of the settlements on the northern continent. Now populated by only a few hundred, it used to be a bit more bustling when the Empire had briefly been stripping the land. Renn mostly spent his days helping out around town as the local gearhead. At least the Empire had left behind a lot of their tech when they left. It was one of the only things that helped the town get back to farming, and one of the only things that kept him sane. At least he could explore the abandoned Imp buildings and tinker with what they didn't take with them.
He thought that would be the monotony of his life, at least until recently. A traveler had shown up in town, which was rare enough to be newsworthy. His entrance, however, had made it all the more intriguing - ship pouring out smoke, flying low almost scraping the treetops looking for an open clearing. He'd ended up good number of klicks out, coming to town looking for parts. Tough to find parts, especially here. Which lead everyone directing him to Renn.
Their encounters had started off slow and businesslike. Guy hardly said more than he had to when he came in to Renn's workshop. Over the next few weeks though, he began to open up. When people get stuck trying to fix their stuff, they often finally open up. They had to - getting them to tell their stories were part of negotiations in his shop. Offworlder stories doubly so. He called himself Kodu, had to be in his late fifties, although it was hard to tell with Mirialans. He'd talk about being on the move as some trader, working by himself, going from place to place. Said he came to Cradda to give it up and get away from it all. Sounded like a total load. Did he have debts he was running away from? Maybe he was actually a bounty hunter tracking someone and got shot down? Or maybe he was the quarry? He seemed like too nice of a guy for that, though. In any event, Renn could never get it out of him. Every time he'd just start asking questions about how did Renn get good at fixing stuff, how he might go about repairing a matter compressor, or retrofitting a hydraulic system.
The damage to his ship was pretty bad - Kodu kept coming time after time. And considering how little there was to work with and Renn was the only one who could find parts even close to what he needed, he eventually weaseled his way to helping Kodu fix his ship with him. And that's when he finally started telling the good stories, stories about Jedi. Renn had heard some few tales about them, but he almost talked about them like he had lived them. Traveling around the galaxy, negotiating peace between worlds, exploring ruins and other amazing places. He had said that anyone could find out one day that they had been picked to be a part of them.
One day, Renn was making the trip back to Kodu's ship with the next batch of parts - he had found a great piece of durasteel that might be able to fix the thruster casing. He found the ship easily as always, but Kodu was nowhere to be found. After searching the ship from top to bottom and the area all around twice over, all he could find was some new carbon scoring and some... welding marks on a couple of the bulkheads? It didn't make any sense - was there an accident? How'd he leave and where could he go? Make a shack out of pines up in the badlands? Renn was worried about him, and frustrated that the story had ended so abruptly and with no resolution.
Motivation
Expertise: He can be so much more than just a wrench-monkey on some backwater.