#3. WWE King of the Ring winner Billy Gunn
Billy Gunn is another King of the Ring winner who would never win a World Championship during his career. But he's also one of the more surprising names to ever win the tournamentt.
Gunn surprised wrestling fans by winning the King of the Ring tournament in 1999. The legendary D-Generation X member would go on to face The Rock at that year's SummerSlam.
Gunn's match with The Rock was unfortunately the breaking point of his push as a main event star and the end of WWE's attempt to propel someone else into the main event spotlight. Afterward, Gunn very quickly reverted to mid-card status.
After winning the King of the Ring tournament it looked like Gunn was on his way to maybe becoming main event caliber, but instead, he reunited with fellow DX member Road Dogg to become Tag Team Champion once again and he mostly remained on that level for the rest of his WWE career.