#1. WWE Chairman Vince McMahon
Vince McMahon has had multiple backstage confrontations with WWE Superstars in the past few years, including Brock Lesnar.
Six years ago, during a RAW show in Nashville on the road to WrestleMania 31, Lesnar reportedly got into a heated confrontation with McMahon. After a "shouting match" between him and The Boss, The Beast Incarnate walked out of the arena.
Arn Anderson, who was a WWE producer at the time, later spoke about the incident. He disclosed on his ARN podcast that Lesnar knew back then that both WWE and UFC wanted him, so he was trying to get the best deal for himself.
Nearly three years later, the former Universal Champion and The Chairman had another incident. Lesnar successfully defended his Universal Championship title against Roman Reigns at WrestleMania 34. He then walked backstage and threw his championship belt towards McMahon. The Boss responded by shouting back some expletives. The whole incident was taped and aired on an episode of WWE 24.
Despite going against The Chairman multiple times, Lesnar remains one of the top WWE Superstars. Following his recent return, he faced Roman Reigns in a Universal Title match at WWE Crown Jewel. Nonetheless, he lost the bout after interference from The Usos.