#1 Bret Hart
Bret Hart was one of the most popular babyfaces in WWE in the 90s, becoming the face of the company. He had an on-screen and off-screen rivalry with Shawn Michaels, with the two fighting for top-dog status in the 90s in WWE.
Hart, who was very happy in WWE, was forced to leave the company as Vince McMahon could not pay Hart's wages a year after The Hitman had signed a 20-year deal with the company, rejecting WCW's offer.
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Hart decided to leave the company and join WCW but he had to drop the WWE Championship to Michaels. The Hitman agreed but said that he wouldn't do it at Survivor Series in front of his home fans in Canada.
But, we know what transpired and eventually came to be known as the Montreal Screwjob and there was a legitimate fight backstage after that match.
The WWE Hall of Famer spoke about the moment he sucker-punched Vince McMahon after the Montreal Screwjob.
"In some ways, I'm not so proud of that moment but in a lot of ways, I think it was the single defining moment of my lifetime. It kinda stings when I think of how much I gave to WWF and how they just wanted to stab me in the back that day and sweep me out the back door and have nobody ever hear from me again. All that I did meant nothing, all those years taping up injuries and working sick and I'd worked for WWF for at least three hundred days a year for at least sixteen years and it meant nothing to them in the end."
This was where the Mr. McMahon character began and the WWE Chairman did not feel remorseful about his actions and had this to say:
"Vince McMahon didn't screw Bret Hart. I truly believe that Bret Hart... screwed Bret Hart."
It seems that their relationship has somewhat mended, with Hart inducted in the WWE Hall of Fame twice.