#4 Hulk Hogan
When Hulk Hogan left for WCW, the relationship between him and Vince McMahon deteriorated drastically. Recently, Bruce Prichard talked in detail about what was Vince's reaction to Hogan abandoning WWE to switch to WCW.
When WCW died a slow death, Vince grabbed the opportunity and bought off the promotion in March 2001. Longtime fans wondered whether they would ever see Hulk Hogan again.
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To everyone's surprise, Hogan, Kevin Nash, and Scott Hall were brought back to WWE TV in early 2002. This led to The Rock and Hogan squaring off in possibly the biggest dream match in WrestleMania history.
Hogan's popularity rose immediately, to the point that Vince McMahon made him WWE Champion again! Vince did another favor to Hogan last year when he reinstated Hogan back into the WWE Hall of Fame and allowed him to appear on WWE TV.
He had been removed from the promotion in 2016 after a controversial tape had emerged that showed him making racist comments.