I know Foley whines with Vince quite a lot, but I haven't actually heard him be a dick to people outwith Vince (And even then, he only goes as far as Vince allows him to go) as he even admits that in his books, what has he done?
Taker's admitted to taking on a few of the boys when he felt they were stepping out of line, but I always thought he was viewed as the man that protects the business and when he had it up with Big Show & Shawn Michaels, he was totally correct in what he done. Interesting interview with Taker here about his 'role' which is definitely worth a watch:
My favourite story is when Joey Styles knocked JBL out, I refused to believe it when I first heard about it. JBL is quite frankly the biggest bully that we the public know about ranging from his treatment of the Blue Meanies (Which Raven got him back for) amongst numerous others with Bob Holly following not far behind. And from what I've seen, read, and heard Kane is one of the nicest guys you can meet but he's big on his politics but I've always felt there should be some dirt on him considering the length of time he's been at the top and rarely even misses a tour.