#6 Kharma

Kharma is one of the greatest women's wrestlers of all-time, and probably the second best TNA Impact Wrestling Knockout of all-time, being beaten by just her greatest rival in her career, Gail Kim.
The former 2-time Knockout's Champion debuted for WWE in 2011 but was quickly removed from the TV when she announced her pregnancy. Although she would tragically miscarriage, she returned to WWE for a cameo appearance in the 2012 Royal Rumble as a surprise entrant, and that is the last we saw of her in WWE.
Did you know a top WWE Superstar just wrestled outside the company? More details HERE
Kharma deserves another go around in WWE, or at least another appearance, particularly in the Royal Rumble. She is one of the best of all-time and deserves to show a casual WWE audience what she can do, which would hopefully lead to more.
Although to be fair, Kharma is a very busy woman today, having successfully branched out into acting and snagging a starring role as Tammé "The Welfare Queen" Dawson in the Netflix original smash hit comedy series, GLOW.