Look up 'locker room leader' in the dictionary, and you'll find a picture of a scowling Undertaker looking back at you. Truth be told you won't, 'locker room leader' isn't in the dictionary, but the point stands. The respect afforded to Big Evil behind the scenes is of mythic proportions, with wrestlers past and present falling over themselves in gushing praise of the Dead Man. Time changes the scenery, but the honorary plaque above the entrance to the yard lets everyone know who is in charge.
The Undertaker has been a major presence in the wider WWE world since 1990, so even contemplating the possibility of nobody pissing him off in that time is enough to draw stifled laughter. This is pro wrestling, a hyper-intense world of macho personalities and alpha males, each trying to piss on as many trees as possible. The problem that a lot of performers in WWE have had is that they forgot that all trees belong to The Undertaker.
Confusing cat analogies aside, there are plenty of men who have found themselves off The Undertaker's Christmas card list, the potential existence of which drew a legitimate guffaw from this writer. Whether it was insufferable pricks being insufferable pricks, arriving stars with chips on their shoulders or Mabel being Mabel, crossing the Phenom is rarely a good idea.