9 Wrestlers WWE Never Turned Heel
3. Rey Mysterio
Even WCW barely bothered with a Rey Mysterio heel turn.
Though his Filthy Animals stable were ostensibly heels in a feud with the Southern-centric West Texas Rednecks during the Atlanta outfit's later years, Mysterio himself was still too popular to truly earn audience anger - even with his mask off and devil horns glued on.
When Vince McMahon acquired Rey's services in 2002, he put the hood back on for the good of the game he was always a master of - wrestling merchandise. Masks and toys with the 'Biggest Little Man's likeness sold in their millions as Mysterio endeared himself to a generation of fans that missed him first time around.
Rey was occasionally too lovable for his own good. McMahon never stopped booking Rey like a cruiserweight - as in, with total and utter disdain - even when he won the World Heavyweight Title in 2006, but the arc of his pathetic run with the title was designed to exhibit the incredible sympathy he was able to draw from crowds regardless of his supposed success.
The boos Rey received upon entering the 2014 Royal Rumble told the biggest story about the audience's infuriation with the lack of push for Daniel Bryan - in no other world as broken as WWE's real one could he invite such hatred.