You fight him several times, along with the other Turks. You first fight him on top of the support pillar when he sets the bomb that brings the plate down on Sector 7 (I think it was 7, it's been a long time since I played it). Then you fight him again later somewhere with his bald partner in crime, Rude.
You see them again at a bar in Wutai where He, Rude, and Elena are all hanging out at a bar. Since it's their vacation time, he and Rude completely disregard the fact that they're *supposed* to kill you on sight... and Elena gets pissed. Then later on you and the Turks help each other when one of your own party, and their partner Elena are kidnapped...
Later on, You fight Reno and Rude again in a sunken submarine.
And finally, as you're making your way into the Shinra complex after the Diamond Weapon attacks, you meet all three Turks making their escape. They've decided that Shinra is ruined and that they're going to quit. They don't want to fight you, but if you want to challenge them one last time, you can do so. I never do... they're too likeable a bunch, IMO.