#8. Ryback
Ryback had a great look when he debuted as Skip Sheffield, a loveable Texas hick. Just when it seemed he might be gaining some momentum, however, he suffered a severe leg fracture and missed a great deal of time in the ring.
When he returned, it wasn't as Skip, but as Ryback, a Goldberg knockoff that overpowered opponents in short matches. The fans didn't take to him, and even chanted 'Goldberg' during his matches. However, that isn't what led to his release.
Ryback has a less than a golden reputation for legit injuring his opponents because of his limited mobility and athleticism. He also doesn't resonate well with the fans, despite a monster push by the WWE. But the real nail in the coffin has been his behavior after the release.
Ryback has complained quite vehemently about WWE management and their inability to make him a star. He has also claimed to be responsible for many of the top stars in the company because he 'took them under his wing,' such as Braun Strowman and Chad Gable. His bitter social media posts and constant put-downs of WWE means he will not likely ever work for them again.