#4 Ron 'The Truth' Killings
R-Truth first joined WWE in 1999, making his TV debut in late 2000 as a new tag team partner for Road Dogg. The Dogg was released from WWE after just 2 months of the team being together, and Truth, then known as K-Kwick, was barely used on TV shortly thereafter until he was released in early 2002.
Now known as K-Krush and then Ron 'The Truth' Killings, he joined TNA on their debut show and was quickly given a strong push. Just 2 months into TNA's existence, Truth became the NWA World Heavyweight Champion, the first black superstar ever to do so. He maintained his main event status throughout 2003 and much of 2004, where he won his second NWA World title, and would later have 3 reigns as a Tag Team Champion. He remained a mainstay on TNA TV until his requested release in 2007.
Charlotte Flair to return and wrestle a CURRENT CHAMPION?
Truth returned to WWE in 2008 and is still on WWE TV today.