The Undertaker is a WWE legend that is almost like a mythical creature because of everything he has done in his career. His WWE life began at Survivor Series in 1990 and over the past 23 years his character has given us so many memorable moments and matches that he has earned the reputation of being arguably the greatest legend in the history of WWE. With greatness comes some misery too. For all of the good that Undertaker has done in his career, there have also been some questionable things. Part of the reality of having an over the top character like him is that storylines will be pushed to the point of ridiculousness and there will be some silly things that happen along the way. Is WWE proud of everything they have done with Undertaker? They're likely proud of most things because he's a great performer that has so many memorable moments, but there are also some things that happened where fans were left thinking "what was that" along the way.For this look back at Undertaker's career, we'll look at ten things or moments that WWE wants you to forget about Undertaker possibly because they're embarrassed by it or simply because it was a case of bad booking. That's a reality of wrestling. There are always going to be bad decisions. Lucky for us, we can laugh about them all these years later. Let's see what Undertaker moments we can look at over the course of the past 23 years.