#2 Dean Ambrose

If you are a part of The Undertaker's druids, you need to cover your face, but The Lunatic loves to play by his own rules, and that is why when he became a part of The Deadman's entrance during the 2006 Royal Rumble pay-per-view, he didn't cover his face.
Kurt Angle successfully defended his World Heavyweight Championship against Mark Henry at the show, and after the champ ended his match, The Undertaker rose on a horse and rode it while druids accompanied him.
This is a great example that perseverance pays, and if you have it, the company will make you a part of its programming. The Undertaker and The Lunatic did face each other down the line as part of a match, but it would make a great storyline if the company looks at this backstory.
The most important reason behind this option not getting its due is the fact that The Undertaker's health is taking a toll on him, and WrestleMania 35 may be The Reaper's last match at The Shows of Shows, and in WWE.