5. The Rock
One name that's been on everyone's radar is The Rock, and for good reason. A surprise appearance at the Rumble would be the perfect setup for a highly anticipated WrestleMania dream match against Roman Reigns, who has already declared his intention to compete.
However, it's worth noting that The Rock has also set his sights on Cody Rhodes, promising to target him whenever he returns, regardless of whether Rhodes is WWE Champion or not. This adds an interesting layer to the potential storyline, and raises questions about who The Rock might face at WrestleMania.
One potential wrench in the works is The Rock's recent character shift. During his appearance on Raw for the Netflix premiere, he seemed to be in a babyface role than the "Final Boss" persona. It remains to be seen whether this is a permanent change or just a one-off, but if The Final Boss is set to return, there is no better platform than the Royal Rumble.