#4. The Ultimate Warrior - Only one world title reign in WWE that could have been two
While many WWE fans will dispute The Ultimate Warrior being on the "best" list, the impact that he had can't be denied. He was far from the best worker in the ring, and he has been criticized by many of his fellow superstars.
However, Warrior's legacy in the company is far beyond what he did in the ring. He belonged to an era in WWE where "cartoon"-like characters were all the rage.
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He was a popular superstar, and his WWE title victory at WrestleMania 6 speaks for itself. At the time, The Ultimate Warrior was the Intercontinental Champion, and Vince McMahon saw him as the successor to Hulk Hogan's throne.
Surely enough, the coronation match ended with Warrior pinning Hogan clean to become the WWE Champion as well as the Intercontinental Champion (which he vacated soon after).
Surprisingly, this turned out to be The Ultimate Warrior's only reign as world champion in the promotion. When he returned in 1992 at WrestleMania 8, the reported plan was for him to have another run with the WWE title.
However, the timing couldn't have been worse, as the government crackdown on steroids in WWE was underway. Warrior was released as he was a known-steroid user.
While the accounts on how his tenure ended in 1992 differ on who you ask, it's still surprising that he only had one world title reign to his name.