#1 Lars Sullivan

There were a lot of hopes attached to Lars Sullivan when he made his main roster debut and was allowed to appear on both RAW and SmackDown to crush other Superstars and prove his dominance.
After attacking The Hardy Boyz and injuring Jeff Hardy, Sullivan was stuck in a rivalry with The Lucha House Party for some time. However, he suffered a knee injury that required surgery and forced him to stay out of action for at least six to nine months.
Sullivan has been out of action since June 2019, and one can hope that he will return sooner than later before the fans forget him completely.
While there is no confirmed news on when Lars is expected back, he could return very soon once his rehab is completed. In that case, we could watch the heel Sami Zayn bring his back as the muscle of his stable and use him to run through his challengers and other big men such as Braun Strowman and Sheamus.
It’ll be great to watch someone like Lars work under a comedic heel and try to fit in before lashing out and turning against Zayn to set up a major rivalry.