I was just curious if they ever mentioned what happened to other characters, like maybe Hawkeye and Margaret?

I think I read where they mentioned Hawkeye, but I don't know about anyone else. I think I read where either they'd either have Klinger writing Hawkeye a letter, or show Potter talking to him on the phone. You never saw Hawkeye, just being mentioned or being talked to on the other side of the phone. If After MASH had been on longer, I'm sure he and some of the others would have been on. I think the least likely to ever appear would have been Charles. Hopefully someday Hallmark will pick up the show.

I have always wonder if any of The Charcters were on Mentioned on AfterMASH