#4. Former WWE Champion Brock Lesnar and Mr. Perfect
Brock Lesnar is a former UFC Champion and physically one of WWE's biggest stars, there aren't many men who would pick a fight with The Beast.
Throughout their careers, Curt Hennig and Brock Lesnar were close friends. Lesnar even talked about him in his book DeathClutch, following Mr. Perfect's death:
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"I really think about him every day. We could have had so much fun together. I miss him so much, because with Curt you were never just passing time. You were enjoying every minute of it. Why did he have to go and die?"
Despite how close the two men were, they have still become part of wrestling history together. Their backstage altercation came as part of The Plane Ride From Hell and has become a huge part of WWE folklore.
Mr. Perfect reportedly challenged Lesnar to the match on the plane and since the former World Champion was a newbie in WWE at the time, he accepted. The two men then brawled across the aisles and left destruction in their wake, something that Mr. Perfect was later fired for.