Love him or loathe him, John Cena has been the face of the WWE for the best part of the last decade. His image is so recognisable that an audible groan of derision, or shriek of delight, is conjured at the merest glimpse of his shoes.
Cena is the most influential figure in the WWE at present.
However, his reign at the top is coming to an end. This is nothing to do with Cena as an onscreen character or what the creative team chooses to do with him. This is simply a matter of time.
The only wrestler from the modern era that surpasses Cena's time at the top is Hulk Hogan. The rise of HulkaMania happened in 1983 and ran through to the end of 1992. An amazing nine-year run where Hogan was "the man."
Hogan would go onto further success in WCW as part of the NWO. However, the significant change in his character effectively made him into a new entity within the fan's mind. A heel turn may or may not be part of Cena's future, but it would still stop him being the face of the WWE like he is now.
John Cena has been the top star in the WWE for nearly seven years. Stone Cold's time at the top was only five years while the Shawn Michaels era flashed by in under two years. This really puts into perspective how long Cena has dominated the WWE landscape.
Nobody has been on top for more than 10 years in the modern era of professional wrestling for a significant amount of time.
So this goes back to the question, what happens after the fall of John Cena?
The best way to answer that question is to look at what happened when the three stars mentioned above moved on.