#4 Alberto Del Rio
To say Alberto Del Rio shot to relevance in the WWE would be a dramatic understatement. The Mexican sensation rose to the top of the company by winning the Royal Rumble and going on to capture a number of world titles. Unfortunately the latter stages of his career there were a tad more controversial, but regardless of that, what we should we discussing is his impressive MMA career.
Throughout 14 professional fights Del Rio accumulated a record of 9 wins and 5 losses, with one of his bouts even coming against the legendary Cro Cop. The former WWE Champion became known for being something of a submission specialist, and it highlights the fact that he may well have been one of the most legit guys in the WWE locker room.
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Onto someone you really, really wouldn't expect to appear on this list.