#4 Kevin Owens

As a former NXT, Intercontinental, United States and Universal Champion, Kevin Owens has accomplished plenty as part of the WWE roster.
Accomplishing all of this in under five years, it's hard to imagine that anyone would tell the Prizefighter that he would never make it and give up.
But not only do we know this happened, we know exactly who said this: Jim Cornette.
When Owens' contract with Ring of Honor was coming to an end in 2010, many in the company were desperate to re-sign him, Cornette would throw obstacles in the way, as he wasn't a fan of the young Canadian.
Nowadays, the former Universal Champion is one of WWE's most popular stars due to his incredible work as a character and his phenomenal matches.
Not bad for a guy who got blocked by James E. Cornette.