#4 Ronda Rousey

Even though her first run in WWE lasted for a year, Ronda Rousey had a big impact on the company as a whole. Not only is that evident by the way she elevated the entire women's roster during her time with the company, but also by her being a part of the main event at WrestleMania 35.
WWE has been trying to put the women Superstars on the same level as the men, but needed someone that could legitimize the roster. Fortunately for the company, Rousey signed a deal with the company, quickly became the RAW Women's champion and put on some stellar performances.
Breaking Vince Russo and Jim Cornette update HERE.
In the end, it was something that garnered a lot of mainstream attention for WWE and also really fit in with The Women's revolution angle quite nicely. While Rousey did garner some negative criticism with her latest comments on WWE, many fans are still hoping to see her return back to the squared circle.