#2: The Fiend attacks The Undertaker at WWE Survivor Series
When WrestleVotes first reported that The Undertaker might be making an appearance at WWE Survivor Series, several fans immediately mentioned that The Fiend could be the most intriguing opponent for him.
The reason is simple, Bray Wyatt's evil alter-ego has impressed the audience in terms of the complexity of his character. And since the 90s, The Undertaker has been the most fascinating WWE gimmick. The storyline practically writes itself.
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Both characters also have supernatural roots, so a potential match between The Fiend and Undertaker sounds intriguing.
The Fiend never forgets those who have wronged Bray Wyatt in the past, and The Undertaker is one of them. Wyatt and Undertaker collided at WrestleMania 31, where the latter emerged victorious.
At Survivor Series, if The Undertaker returns as the "Unholy Trinity" character and reflects on his 30-year WWE career, The Fiend could attack him to set up a future clash.
For what it's worth, if Michelle McCool stands by her husband's side at Survivor Series, Alexa Bliss could get involved as well.
There's no telling how an actual in-ring match between The Undertaker and Bray Wyatt may look in 2020-21, but there is very little that can go wrong if Wyatt's creativity collides with The Undertaker's aura in the ultimate cinematic match.