1. Aleister Black
Fans have always liked the rivalries between the superstars who had supernatural gimmicks. So this rivalry could be a good option.
Bray Wyatt and Aleister Black are playing mysterious characters. Both of them have been cutting outlandish promos from unknown places.
Recently, these two had a weird exchange in the social media.
Replying to a recent tweet about WWE 2K20 by Bray Wyatt, Black stated that he would like to talk to Wyatt and pointed to a door.
In response, Wyatt posted a picture of the door of the Firefly Fun Fouse containing Vince's puppet and said that he also had a door.
Although this conversation about doors sounds weird, it might be used as a door to a feud between the two.
This rivalry could be promoted as The Fiend vs. The Devil, in which both dark forces may face off to prove their supremacy. Aleister Black would get an opportunity establish himself on the main roster, in the process. If that happens, it will be a great treat for WWE universe.