5. The Big Show
After this past Smackdwon he had lost the World Heavyweight Championship to Del Rio and supposedly a rematch has to happen. Logic would state that the rematch would take place at the Royal Rumble and it likely will. It could occur however on free TV leaving space in the Rumble entrant list for the Big Show but even so, if the match took place at the PPV, Show could lose and enter the Rumble. Lets not forget last year they allowed talent who were on the card for the Rumble to enter the Rumble match itself. Big Show can never really be forgotten when talking about potential winners. He is likely coming to the end of his career shortly and has been involved in about half of the Rumbles that have ever happened. He is also enjoying the greatest run of his career after finally finding himself looking like a monster. It may be the case that he will be heading downhill from now on but the threat of Show cannot be ignored.