Shawn Michaels
It is a bit hard to digest, but Shawn Michaels was fired by WWE. The incident happened in the early days of his WWE run. He made his debut alongside Marty Jannetty but after just two weeks, the duo was fired. An incident in the bar was the reason for this but according to Michaels it was just a misunderstanding.
A year later, WWE would resign Michaels and Jannetty. They had a brief run as the Rockers before Michaels infamously turned on his partner.
The Heart Break Kid gimmick followed and within no time Michaels was one of the top guns in the wrestling business. If Michaels had given up after WWE fired him, we wouldn’t have had all those legendary matches in the archives now.
Stone Cold Steve Austin
If you recall, I mentioned Paul Heyman as the second worst superstar that WCW pissed off. The reason for this is Steve Austin. He was one of the major reasons for WCW’s death and if you haven't guessed it already, Austin was fired by WCW.
Eric Bischoff fired Austin from WCW saying that Austin was not marketable. Bischoff did it through the phone which future angered Austin. He took shots at WCW at every turn he had afterwards. After a short stint in ECW, Austin jumped to WWE and kick-started the attitude Era. The iconic star then started delivering deadly blows to WCW. And just like that, Austin had his revenge.