Rick Rude once told Ultimate Warrior to stop competing so stiff, Warrior responded with something along the lines of, "I can act that way, I'm the Warrior!" And Rick Rude knocked him silly.
When Davey was released from WWE in 1994, while competing an a show in England, Dynamite Kid got word, went to the arena, tipped over a table with Davey's pictures, taped his wrists and went to fight Smith. Davey Boy's father was there and Bulldog locked himself in the locker room. While being held back, Kid struck Bulldog's father.
Austin, McMahon, Undertaker and Michaels were in a meeting with other officials planning the WWE's strategy going forward. Apparently, leading up to WMXIV, the idea was for HBK to drop the strap to Austin, which HBK initially rejected. At this point Undertaker began to tape his fists. The Deadman told HBK that it was advisable that he Shawn change his mind about doing the job by the time Undertaker finished taping his fists or he would make HBK change his mind the hard way, Undertaker was brought into the meeting because backstage, Taker was one of the few people Shawn feared at the time.
After Daniel Puder locked Kurt Angle in a kimura on an edition of Smackdown, Angle attempted to have Daniel Puder either suspended or fired for his actions. The story goes that once Puder found out about the story, he challenged Angle to an actual fight, The Undertaker stepped in and told both men to calm down. Due to the respect Taker has in the back, both men stayed out of one anothers way until Puder's exit from the company.
Psycho Sid and Brian Pillman were out drinking one night in 1991. Sid and Pillman were rumored to have a storyline upcoming, so Sid started mouthing off about what he wanted to do and how Pillman should just listen to him. Pillman, a notorious tough guy, told Sid to shove it and basically embarrassed him in front of all the other boys in the bar. Sid went nuts and promised to return with a weapon that would make Pillman pay for what he said. Vicious went outside to search around but could only find a closed gas station. Instead of leaving empty-handed, Sid returned to the bar with the deadliest weapon of them all: a squeegee.
Psycho Sid once burst into Arn Anderson's hotel room and began stabbing him with a pair of scissors. Story went public, Sid was eventually fired and photos were taken of the hotel hallway which Ric Flair described as a murder scene due to all the blood.