#2 Scott Steiner
Scott Steiner's run in the WWE did not go well. Although he debuted in a main-event program with Triple H, Steiner was clearly not in proper ring shape, getting gassed out early during his matches against 'The Game'.
Steiner dropped down the card like a rock after his feud with Triple H and left WWE in 2004. He has since bad mouthed Vince McMahon and WWE on multiple occasions and Vince won't be running to indict him into the Hall of Fame anytime soon, if ever.
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#1 CM Punk
There is still a chance that CM Punk will return to WWE someday but as of now, the beef between the former WWE Champion and the company is still there. Vince McMahon himself hasn't forgiven Punk for the way he left WWE and the things he said after leaving.
There's no love lost on Punk's side either, although he has been more critical of Triple H than he was of Vince McMahon himself.