#4 Rey Mysterio

Rey Mysterio will go down as one of the greatest performers in WWE history by the time it's all said and done, but after the shape he's gotten himself into in recent years, he's got one big run left in him. While he'll never get to the main event level again, he could be very valuable to the company over the next few years, and putting over future main event stars like Zayn would be a great way to use him.
Currently, The Master of the 619 is embroiled in a bitter feud with Samoa Joe, but when that's over, the ultimate underdog would be wise to be the one that shuts Sami Zayn up. Rey has spent decades travelling the world to entertain the fans, and while there may be some element of truth to what Sami is saying, he's just waiting to be shut up, and given how popular Rey has been for all that time, he's a great candidate for this spot.
Look who just shut down all of Tony Khan's critics! More HERE.