Mojo Rawley

Mojo Rawley was one of the most surprising call-ups to the main roster in 2016. He was called up to the Smackdown roster to form a tag team with Zack Ryder.
However, Rawley and Ryder are no longer together and Mojo portrays the character of a heel guy on RAW currently.
R-Truth wanted to 'kill' former WWE writer. More details HERE
Apollo Crews

Apollo Crews had won the multi man battle royale on SmackDown to secure the sixth spot in the Six-Pack Challenge match which took place on the show later on.
Crews has not received his huge push in WWE yet and the muscular athlete is a part of the RAW roster currently. Coincidentally, Apollo Crews won a battle royal on the last RAW episode 2018 and Dean Ambrose's championship was the reason behind both battle royals.