#3 Kane
Kane has changed an awful lot since the character debuted on WWE television all the way back in 1997. So much so that at one point it really did feel like WWE had hired someone new to play the role, especially after he first removed his mask in 2003.
That was not the case, of course, and the man once behind the mask, Glenn Jacobs, is always the person who has portrayed the Big Red Machine. Nowadays though, Glenn's career path has begun to take a different route.
Jacobs is currently running for mayor of Knox County, Tennessee. With all of his time being taken up by the campaign it has been quite a while since we've seen The Devil's Favourite Demon on WWE television. His retirement hasn't been officially announced, but with Kane's foray into the political world, you can rest assured that announcement is coming.