#2: Lunatic Fringe Dean Ambrose and The Beast Incarnate Brock Lesnar
Brock Lesnar was an All-American amateur wrestler who came up quickly through Ohio Valley Wrestling, which used to be WWE's developmental territory. His quick rise to the main event involved decimating men like The Rock and Hulk Hogan. Just when Lesnar seemed to be on the top of his game, he abruptly left sports entertainment for nearly a decade to concentrate on Mixed Martial Arts, where he was quite successful and won the UFC heavyweight title. He returned to the WWE on a part-time schedule and reigned as the Universal champion on Raw, despite making sporadic appearances.
Dean Ambrose came up through the independents the hard way, putting his body through enormous torture in the Combat Zone Wrestling league. After nearly a decade of struggle, he was hired by the WWE and came up through their developmental territory until he made his main roster debut as part of the Shield. The Lunatic Fringe has held nearly every title the WWE has to offer, including the WWE Championship.
Why they don't like each other: The beef between Lesnar and Ambrose stems from their feud and Wrestlemania 32 hardcore match. Ambrose, a longtime veteran of such bouts, had a lot of ideas which Brock used his creative control clause to nix. Ambrose had this to say on Stone Cold's podcast:
“Artistically Brock didn’t want to do anything. I had a vision for that match to be the craziest thing imaginable, you know what I mean? And I was trying to pitch everything to everyone and had every idea. I put so much effort in and so much work in and other people did too and I was met with laziness.”
For his part, Brock doesn't seem to be overly concerned about how Ambrose feels about him. It's unclear if there are still any lingering feelings of resentment between the two.
Ambrose currently plies his trade in the AEW after leaving the WWE owing to creative frustrations.