#4 Bo Dallas
While Bo Dallas is the real-life brother of Bray Wyatt, the two haven't interacted nearly as much as one would have hoped for on WWE programming. The former NXT Champion is a pretty creative performer himself so hopefully, a mini transitional feud with The Fiend sees the light of day.
Dallas remains in WWE while his B-Team partner Curtis Axel got released, which means that he could be a part of future storylines on SmackDown. Seeing him move over into the Firefly Fun House would be an inspired booking decision. It could happen before or after The Fiend goes after Braun Strowman once again.
These two have actually feuded in WWE, with their respective tag team partners. Wyatt and Matt Hardy lost the RAW Tag Team Championship to Dallas and Axel, in what turned out to be his final pre-Fiend program. The Fiend also defeated the B-Team in a dark match after an episode of SmackDown.
WWE could play on this bit of history, eventually sending Bo Dallas into Bray Wyatt's whacky world. The two brothers would undoubtedly have a load of fun working alongside each other in the Firefly Fun House, with Bo's career being rescued.