#4 Ric Flair
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Much like Dusty Rhodes, 'Nature Boy' Ric Flair was the other heart that kept the NWA thriving in the 1980's. Ric Flair was to the NWA, what Hulk Hogan was to the WWE.
Nobody ever thought it would happen, but in 1991, Flair left WCW after a major fall out with boss Jim Herd. Jim had wanted Flair, the then WCW World Champion, to change character by shaving his hair, wearing a diamond earring and going by the name of Spartacus.
This was enough to make Flair quit and sign up with WWE, where he would stay for two years and become a two-time WWE Champion, before returning to WCW in 1993.
Flair had an overall good run with WWE, despite fans not getting to see Flair vs. Hulk Hogan at WrestleMania. Flair returned to WWE in 2002, following the closure of WCW.