Every serious wrestling fan knows that The Undertaker is 21-0 at WrestleMania. It's pretty incredible that The Streak has lasted this long, as it wasn't originally conceived to have ever started. The first few Manias he competed at, he could have just as easily been booked to lose. But over the years his consecutive victories have transformed his matches into events that rival the main event for most anticipation. Among his list of defeated opponents have been big stars like Ric Flair, Edge and Jake "The Snake" Roberts. And while The Streak is absolutely impressive, it does feel a bit incomplete. After all, some of the biggest names from the past couple decades are not among his victims. Part of the reason is because he had two WrestleMania matches with Kane, two with Shawn Michaels (which were both fantastic) and three against HHH. That leaves a lot of potential opponents off the list. Besides that, a far out of his prime King Kong Bundy, an uninspired Big Show and Albert, and a not ready for his push Mark Henry were some of his lesser adversaries. In retrospect, it would have been nice to switch out a few of those lackluster matches, and exchange them with some bigger names. Just imagine how much bigger The Streak would be with a couple more icons added. Here, we take a look at some of the men that Undertaker should have faced since his legendary run began, and the WrestleManias where they could have happened.