#3 John Cena
It's no secret that John Cena turned from a legitimate crowd-favorite to one of the most polarizing Superstars in WWE history, after he was crowned WWE Champion at WrestleMania 21.
Also read: 4 WWE Superstars who made career-ending mistakes
After defeating JBL at the Show of Shows, Cena became the hottest Superstar in WWE at the time, and was drafted to WWE's premiere show, Monday Night Raw. WWE replicated the Austin-McMahon story line with Cena-Bischoff, with the Raw GM doing his best to get the championship off of Cena. The former Dr. of Thugonomics defeated the likes of JBL, Chris Jericho, Kurt Angle, and Randy Orton during his first WWE Title run, racking up an incredible record of 32-9 in 2005. Cena was protected to the point that no one managed to make him submit, especially due to his gimmick being about never giving up. Cena lost the WWE Title to Edge at New Year's Revolution, but went on to win back the Title at Royal Rumble.