#4 AJ Styles - Face
AJ Styles recently signed a new contract with WWE, which is going to be his last one as an in-ring performer. Styles, who turns 43 next year, probably has a few more years remaining to showcase his top-notch in-ring skills before walking off into the sunset.
The former WWE Champion is currently the leader of The OC, the faction consisting of Styles, Karl Anderson and Luke Gallows. The heel faction have been prominently involved on RAW over the last few months, especially since Paul Heyman became Executive Director of the red brand.
The OC are a heel faction on WWE television, but I have a feeling that the trio could become babyfaces in 2020, especially if WWE want to add Styles back into the WWE Championship picture.
We could very well see Styles feud with Lesnar for the WWE Championship in 2020, perhaps his last shot at a top title in the promotion, or even with Seth Rollins, who is a babyface and has lackeys of his own - AOP.