2. Chris Benoit
The Canadian Crippler had about a full year in the WWE during the Attitude Era, the same period Eddie Guerrero qualifies for having debuted in the company on the same day in the year 2000. His absence though is obvious after the events of the double murder suicide of his wife and young son in 2007 and he has been all but erased from history by Vince McMahon. Unlike the Owen Hart omission, this one is obviously justified and understandable.