9: Mark Henry
Mark Henry, also known as the ‘World’s Strongest Man’ is also one of WWE’s longest-tenured employees. After winning numerous strongman and powerlifting accolades throughout the 1990s, Henry joined WWE in 1996, and has been with the company ever since.
He signed multiple lengthy contracts throughout his tenure, and has been a regular fixture on WWE programming ever since. Henry spent more or less twenty years on WWE programming, engaging in feuds all over the card. In some years, he was a top threat for world titles and a true danger to the entire roster, while in other years he was a comedy wrestler with sometimes less-than-desirable character quirks.
However, his loyalty to WWE led to many important moments for him, including a run as World Heavyweight Champion back in 2011. Even after some people tried to break him (especially through some of his early gimmicks, which were meant to embarrass him), Henry stayed loyal to WWE, which is admirable if anything.