#3 Nikki Cross
The WWE Universe witnessed Nikki Cross's first main roster appearance on the November, 6th 2018 episode of Smackdown where she answered Becky Lynch's SmackDown Women's Championship open challenge in a losing effort.
Despite that loss, Cross was also announced as one of the superstars that would debut on either Raw or SmackDown Live in the near future, and it's evident that SmackDown would be the best destination for her due to Sanity being on the same roster too.
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We have also seen Cross wrestle on an episode of Raw as well as the women's Royal Rumble 2019 match. Despite the fact that she didn't win those matches, she showcased her character enough for the fans to remember who she is. The psychotic Scottish female would be a great option to take the championship away from Asuka.
Cross and Asuka also have a heated rivalry which goes back to the NXT days. We saw many ruthless matches between the two females, including a Last Man Standing Match for the NXT Women's Championship, back when Asuka was undefeated. Both women were full of aggression and intensity as their skills matched each other's talents.
Both women have proven that they are capable of putting on a great match together, and it shouldn't be a surprise if we see that on the main roster. Cross has never beaten Asuka before, which could create a decent storyline for SmackDown.
With Cross needing victories to establish her character, having her be the one to face the SmackDown Women's Championship from Asuka at WrestleMania 35 would be a credible choice.