Thunder Rider is a self-styled superhero, serving up mass murder in a haze of napalm and nerve gas. Seeing his destruction firsthand, Ryan Cawdor accepts a bounty from a ravaged ville to find and eliminate this vigilante. But he has designs on a new sidekick, Krysty Wroth, and her abduction harnesses the unforgiving fury of Ryan and his warrior companions. At his secret fortress, Thunder Rider waitsarmed with enough ordnance to give his madness free rein....
I don't even know if there's anyone around who still reads this series, seeing as how this is, like book 75 or something like that. As far as they go, it was a little different than the norm of them, but with some future tech stuff that seemed to come out of nowhere.
I don't read Outlanders, but maybe this is going towards tying in the two series.