#1. Sable - surpassed Marc Mero

The ballad of Marc and Rena Mero in the mid 1990's in the WWE has been told over and over. Vince McMahon was seriously impressed with the 'Johnny B Badd' character in WCW and jumped at the chance to offer the man who portrayed it a bumper WWE contract. Marc Mero took McMahon up on that opportunity, while insisting that he bring in her then wife Rena alongside him.
Vince McMahon agreed and the rest is history, even though Mero didn't become the focal point of what happened. Marc Mero's push was detested by fans and fellow wrestlers, with Mick Foley found it insulting that his WWE contract was considerably lower than Mero's. The Attitude Era fans never took to Mero, but were fascinated by the stunningly beautiful Rena at ringside.
Dubbed 'Sable', Rena surpassed Mero in popularity - so much so that WWE had to run an angle where Mero was jealous of her success. The angle ended with Sable power-bombing Mero in the middle of the ring. She would go on to replace Sunny as the most over female Superstar on the roster, earning a salary on par with the top male Superstars of the era.
Sable would win the women's title, have a WrestleMania title match and cross over to pop culture. Marc Mero, meanwhile, was let go soon after - never getting that main event push in the WWE. The final blow for Mero came when Sable decided to end things with him in real life, eventually going on to marry Brock Lesnar.

Sable would have two separate stints with the WWE while also settling a case with Vince McMahon's company out of court.