#5 Jinder Mahal
You have to give credit where it is due as Jinder Mahal wouldn't be known for a lot in his career apart from 3MB if he hadn't changed his look.
He was let go by the company in 2014 and no one would have thought he'd return a few years absolutely ripped and become the 50th WWE Champion and the first wrestler of Indian descent to win the title. (Second overall to hold a title in the WWE)
The Modern Day Maharaja was also in the right place at the right time with WWE wanting to boost their value in India, and Mahal being the perfect representative.
#4 'Road Dogg' Jesse James
Like his former teammate Jeff Jarrett, 'The Roadie' was released from the company.
His former persona as Jarrett's assistant during the country song gimmick had to die, and he returned as the 'Road Dogg' Jesse James, forming The New Age Outlaws with the 'Badd Ass' Billy Gunn.
He not only presented himself as the true singer of 'With My Baby Tonight' ( a twist?) and 'The Real Double J' but together with his new partner and D-Generation X introduced the wrestling world to the Attitude Era. They went on to become one of the most successful tag teams in the history of the WWE, winning 6 championships together ( one of them came in 2014). Additionally Road Dogg found success in singles competition, becoming a one-time Intercontinental Champion, and Hardcore Champion.
James is considered to be one of the greatest stars and architects of the Attitude Era. (1997-2002)