#4. Braun Strowman
At present, Roman Reigns and Braun Strowman are on-screen rivals since they will both fight for the Universal Championship in a No Holds Barred match at WWE Payback. Strowman and Reigns have been rivals and friends at different points in their careers, but outside of the ring, the two men are the closest friends.
Roman Reigns and Strowman were in the middle of a feud on WWE TV back in 2017 and the two men decided to go sightseeing together, and images of the two men were then spotted online, which broke kayfabe.
At the time, Strowman and Roman Reigns were in the middle of a blood feud which includes some fantastic matches. Reigns crashing and ambulance, and Strowman at one point flipping the emergency vehicle.
Not only did this day of sightseeing ruin the illusion that the two men were in the middle of an intense feud that was being pushed forward by WWE, but it made it clear that throughout their time working together on-screen, Strowman and Reigns had become close friends.