#3 Jerry Lawler
The name of Memphis Wrestling can't be talked about without mentioning Jerry Lawler. He was the cornerstone of the promotion for years and went on to win several titles throughout his run.
When WWE came to Tennessee in 1986, Lawler wasn't keen on letting Vince use his moniker of "The King". Harley Race was using the gimmick and was being heavily promoted as such.
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Lawler took Vince to court over the use of the gimmick, and ended up winning the whole thing! Surprisingly, Vince forgot the loss years later when he hired Lawler as a color commentator.
"The King" went on to announce WWE matches for over a quarter of a century and was inducted into the WWE Hall of Fame in 2007. It's interesting to ponder on where Lawler would be today had he not been taken in by McMahon.