#2 Buddy Murphy
Shifting to a more immediate option on the current SmackDown Live roster, Buddy Murphy could be the one to help Roman Reigns. The Australian grappler was shoved into the storyline as a result of him being spotted during the initial scaffolding attack on the Big Dog.
Murphy had killer matches against both, Roman Reigns and Daniel Bryan, showing the WWE universe just how good he actually is. He even picked up a clean victory over Bryan. Murphy also seems to have turned face, or is in the process of doing so, after getting bullied by Bryan and Erick Rowan.
Reigns himself showed the former Cruiserweight Champion respect on Twitter following their match. Add in the fact that Murphy shook Ali's hand after losing to him in the King of the Ring tournament. All of these suggest that he is set to become a good guy and what better way to cement that than to head into the lion's den with the Big Dog? Remember, Murphy was the one who revealed that Rowan was the one who attacked Roman Reigns, so he would be induced to gain some revenge on the big man.