“So what the consensus? Is Mueller a black hat, or a white hat? “
Even if he is working right now as a white hat he will have always been a black hat in the past. He has been as dirty as they come. Many innocent people have been his victims. He has even been involved in using phony charges to get Republican members thrown out of congress at crucial times.
It is all right here:
https://www.freerepublic.com/focus/f-bloggers/3650411/posts
white, black or gray hat, imo he’s just a plain a$$hat