5 Theories About What The Undertaker Whispered In Bray Wyatt's Ear
1. Absolutely Nothing...
...and WWE allows the ambiguity to hang in the air as something they can revisit further down the line.
WWE - and the incredible, twist-heavy Bloodline angle on Raw Is XXX is more rule-proving exception than the standard - often makes it up as they go along. This is especially true in the case of Bray Wyatt.
Bray was said to be guided by Sister Abigail in his formative years. Then, in 2017, it was revealed that Bray was Sister Abigail all along (or had the ability to inhabit her or something). This, after Randy Orton killed her ghost or whatever that was. Then, in 2020, it was revealed that Sister Abigail instead takes the form of a siren luring Bray's rivals to their doom.
Then, for f*ck's sake, it was revealed in 2022 that Sister Abigail is irrelevant; in order to disassociate fans from the disastrous, original Wyatt character, the "lore" was retconned. It was Uncle Howdy all along that made Bray into the monster.
Nothing in the Wyatt "mythology" fits together. It's a load of complete b*llocks, and this might be the next half-hearted thing that they do with no substantial follow-up.
The last time two WWE acts shared a whisper - Edge and Roman Reigns - we never did learn what was said. Unless it was actually "Bugger, we need Daniel Bryan to save this build, because it's quite boring, isn't it?"
WWE can decide what the content of the whisper was whenever it is convenient for them.