#2 Michael Bisping
If you want to bring in a UFC star for entertainment value, Michael Bisping is potentially the WWE's best bet.
The guy is one of the best talkers in the entire sport of MMA, and he knows how to sell a fight to the audience. Not only that, but the World Champion backs up his words inside the Octagon and over the years has scratched and clawed to get all the way to the top.
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If that isn't an inspirational story and a bonafide bad ass, then nothing is. If the WWE is smart then it will do something with Bisping over the next few years, with a Rumble appearance being perhaps one of the better ideas that they could use. After all, there's likely to be a few UK fans in the Alamodome on that night.
We conclude with a man who could create quite the staredown with one competitor in particular.