4. Hulk Hogan
Often, it's a reality show that spurs a wrestler on to greater success. Naomi was just a dancing valet until her appearance on Total Divas, and Rusev has also enjoyed a bump in popularity after appearing on that program.
For Hulk Hogan, however, his Hogan Knows Best show only served to highlight his snobbery and elitism. From blaming a dead teenager for his own son's car accident to mouthing off about politics, Hogan tarnished his reputation.
However, it was a leaked sex tape that caused his career seemingly irreparable damage. Millions of people saw the footage on Gawker. While other celebrities have survived similar scandals, Hogan made the mistake of uttering the N-word on several occasions. Though he won a huge settlement when he sued Gawker, his wrestling career is seemingly done for.