4. Sting (54)
As the oldest member of this list, Sting just might be the most impressive. He's still wrestling full time as part of the TNA roster. The first ever member of the TNA Hall of Fame, Sting is still one of the top faces of the company. Sting's been with TNA for over 10 years and has feuded with just about any and everybody. He's a 5 time TNA World Heavyweight Champion, as well as a 1 time Tag Team Champion. Sting has literally accomplished everything in his career with the exception of one thing, working for the WWE. Everyone wants to see Sting vs Undertaker at Mania but with Sting being 54, the fantasy of that match happening are slim to none. Sting will go down as one of the greatest ever, and even at the age of 54 he's at the top of his game and is currently in one of TNA's most high profile feuds. His legend will only continue to grow from here. You may not be a fan but you have to respect the man for what he's accomplished, especially at his age.