#4 Dean Ambrose

Let's be honest here.
Dean Ambrose became one of the most disliked characters in WWE history when he turned heel and attacked Seth Rollins after they won a tag team match on Raw. The move was even more surprising due to the fact that the turn came only hours after Roman Reigns, announced that his leukemia had returned.
Unfortunately for WWE and Ambrose, things only got worse from there and The Lunatic Fringe actually admitted during a promo that he thought Reigns deserved to get cancer. Not only did this strike a lot of fans the wrong way because of how close The Shield was to each other, but also by the real-life battle Reigns was going through at the time.
If not else, it hurt a lot of fans and soured their opinion of Ambrose for at least the foreseeable future. Beyond that, it was a moment that kind of went too far and made light of Reign's real life or death battle with cancer. Either way though, it made Ambrose one of the most unlikable superstars in WWE and it was shocking to watch him do that.
Becky Lynch has been challenged HERE.