I haven't had that much of a scaredy cat, Gary, but I do know that the best thing to do is just go slow. It's entirely possible that with time, Hershey will learn to tolerate the rest of the Found Cats and become a regular member of the herd. I'm sure everything is just so new for him right now, so just go slow. Maybe just bring one of the Found Cats in at a time. Let Hershey get used to one of them, then when he is amongst all of them he will know who his friend is.

Good luck!