#8 The Undertaker and Shawn Michaels
With respect to Shawn Michaels, we could probably find around a dozen people who he has made amends within WWE over the last 20 years.
Back in the 1990s, it is no secret that Michaels was difficult to deal with backstage – not only around Vince McMahon but also his fellow WWE Superstars.
The Undertaker is widely regarded as the most respected Superstar in WWE history, but he was so fed up with Michaels' antics that he threatened to beat up “The Heartbreak Kid” if he sabotaged Steve Austin’s WrestleMania 14 title victory in any way.
Speaking on a Badd Blood 1997 edition of ‘WWE Untold’ in September 2019, The Undertaker made it clear just how much he disliked his WWE colleague during their time working together in the 1990s.
"Where Shawn Michaels and I are today and where we were at back then on a personal level... it's taken a complete three-sixty [one-eighty]. If Shawn Michaels back then was on fire, I probably wouldn't p*** on him to put him out.”
The Undertaker clarified that there was nobody he would rather have been in a WWE ring with than Shawn Michaels during that era, even though he did not like him as a person.