4. Shinsuke Nakamura
The beauty (and often curse) of superstars yet to debut is the fact that WWE can choose to make them as important as they please. This face, coupled with Shinsuke Nakamura's astonishing, brutal history in New Japan and the growing interest in indie wrestling by more mainstream fans, could make the King of Strong Style a believably dangerous opponent for the Deadman. All WWE really need to do to get Nakamura over is keep him the same. Have him tear opponents apart with his vicious offence, blazing a trail towards his showdown with the Phenom. As long as Undertaker is in a decent enough state to withstand such a hard-hitting onslaught (and considering his brutal matches with Brock Lesnar last year, he seems to be) this could be a fantastic match. A slight problem is the fact that the former NJPW star is booked for a match at the NXT: Dallas event that same weekend. Nevertheless, his experience of the gruelling Japanese scene should have him more than prepared to pull double-duty and wrestle two major matches within a 48-hour period.