04. Abyss
The Abyss gimmick would be a great fit for WWE especially with the lack of monsters on the roster now that Undertaker has all but called it a day, and Kane has turned face. Abyss could be utilised brilliantly as a heel character pushing the edges of the PG era. Sure, the guy lacks the talent of Taker/Kane or perhaps even show but he's a convincing threat when used correctly and TNA clearly has run out of ideas for his character. Why not bring in Abyss and pair him with Mick Foley? How often has Foley called Abyss a Cactus Jack rip-off? There's mileage in that alone. And with his size and look he could easily be slotted into the main event scene, even if he never actually gets a run with the gold.
Opponents of choice: Mick Foley, Sheamus, John Cena, Kane, Big Show ... the possibilities here are endless.