#1 The Undertaker
'The Phenom' last wrestled at WWE Crown Jewel and it must be noted that he looked in much better shape than he did back when he wrestled Cena at 'Mania 34. It looked like that he still has the gas in his tank to put on a couple of decent matches before he retires.
He could make his return at the Royal Rumble and the sound of his gong will definitely leave the fans awestruck.
The Deadman could have a face off with a young superstar like Finn Balor which will plant the seeds of a future match between the two which will most probably take place at 'The Grandest Stage of Them All.' It will be amazing to see Demon Finn vs The Undertaker at WrestleMania 35.
The match will be the perfect retirement match for 'The Deadman' as he will pass the torch to a young superstar like Finn Balor in a high stakes match.
Which superstar do you want to see make a return at the Royal Rumble? Give your opinions in the comments section below.