Very cool. Another cryptic WWE message. These always seem to get the Universe riled up.
It's obviously a gimmick character. Something to do with darkness. I think many of the responses so far could be possibilities. Something to do with the Wyatt Family, Kane, Undertaker, even the Ascension. One thing is definitely for sure. It's NOT Sting.
My guess would have to be Kane. My runner up is the debut of the Ascension. With an influx of tag teams (Wyatts, The Shield, PTP, Usos, Los Matadores, The Real Americans, Tons of Funk, 3MB... to name most of them), I don't think that another tag team is a bad thing. The Ascension have a pretty cool thing going on, and Conor O'Brien can be down right creepy at times. With the debut of thy Wyatt Family recently, I'm not sure right now is the right time to debut another creepy, dark tag team/stable. It's way too soon. And let's face it... The Wyatt Family is WAY better than the Ascension.
By logical thought process, I'm going with the return of Kane in a month or so. These vignettes will air for a month, month and a half, and we'll see Kane again. Hopefully, he'll be a member of the Wyatt Family. Bray could use another monster. One with a little more credibility. Not that Harper and Rowan aren't badass enough... but Kane is Kane. Simple as that.