I have to nominate Stanley F'in Weigel for this honor. He served in NYC during the 60s-7-s (time approximate). I think my friend ShirleyW will remember him. Shirley and I didn't know each other back then, but I met her on Six Screens and from her comments realized we were contemporaries.
Weigel was a really puffed-up piece of work, full of himself and eager to publicly embarass ANY member of the congregation for any minor reason. Being a total P.O.S., he floated toward the top of the Watchtower cistern, becoming something like City Servant last I heard. By now I'm sure he's dead, and millions are grateful.
On the opposite side of the spectrum we have Paul Haviland, who seemed to be a very good man.