Given the length of his tenure, the scope of his success, and the power of his character, there's an argument to be made that The Undertaker is the greatest WWE superstar of all time. No Hall of Fame in the sport -- least of all WWE's official one -- is complete without him in it. That doesn't change the fact, though, that his induction will be an awkward and potentially sad experience. When The Undertaker officially retires and goes into the Hall of Fame, he's going to have to abandon the character that made him a star -- even if it's only for the course of a 45-minute speech. Mark Calaway deserves an honest, emotional farewell/celebration from the sport to which he's given so much, but seeing the Deadman emotional and breaking kayfabe will be jarring and strange... especially if Michelle McCool does the induction. Hopefully, he'll keep it short, sweet, and semi-kayfabe -- or go full-on "American Bad Ass" for the evening.