4- The Undertaker
The Undertaker has not appeared on WWE television since the September 10 episode of SmackDown, and he has not fought a match since Extreme Rules on July 14. Showing up out of nowhere during The Royal Rumble would be a great moment, especially if he were able to get a measure of revenge against Lesnar.
The Deadman won the men’s Royal Rumble in 2007, so he would add his name to the exclusive list of Superstars who have claimed victory twice if he were able to survive the other competitors. While he may not need the accolade, setting up another showdown with Lesnar at WrestleMania would be a good reason for booking him to win. People love revenge stories, and The Undertaker going after The Beast for ending his undefeated streak is a storyline WWE has yet to tell.