#4 Alberto Del Rio
Alberto Del Rio is a former World Champion and he's had two very different stints with WWE in his career. His first stint came to an end when he was fired back in 2014 after a backstage altercation with an employee.
Del Rio then took Vince McMahon to court following his dismissal since he was fired and then handed a 90-day no-compete clause which he believed was unfair. He won his case and went on to wrestle in Mexico.
Del Rio returned to WWE in 2015 but this time around he only signed a one year deal. This meant that when Del Rio was suspended in the summer of 2016 alongside his girlfriend at the time Paige, for violating WWE's Wellness Policy, he went on to negotiate his release.
There have since been some issues between Del Rio and his former girlfriend Paige and the former WWE Champion has returned to his native country.
Back in 2019, Fightful reported that the company was not interested in bringing back the former star and that he had left a poor impression backstage with talent, staff, and management due to the issues that he had when he no-showed a number of events.