Wrestling can be a fickle business. One minute you're the WWF Champion, promised a twenty year contract and the next you're getting screwed over in front of millions of people around the world. The WWE, especially, can be unforgiving. Vince McMahon rules with an iron fist and, although business will always be done if there is business to be made, once you cross the boss you're in trouble. The WWE and Vince McMahon can ruin you and your reputation too, if you're not careful. Then there are, of course, the injuries that come as a result of squared circle combat. Careers have been shortened and even ended completely because of the very real falls and bumps they take. When these stars fade away, wrestling fans naturally look to the next thing. There's no future living in the past. A lot of times, wrestlers defy the wrath of Vince, personal problems or their own injury-ravaged bodies to make a comeback to the big time. There are few things more heartening or exciting for fans than to see an old favourite come back into the fold against the odds. The WWE has seen some good, bad, unnecessary, unwanted and catastrophic comebacks over the years. These ones, however, were never anything less than very unlikely.