#7 Mr. Perfect Curt Hennig
Curt Hennig, unlike many of the men on this list, actually had quite an impressive career. However, he never held the world title in either WCW or WWE, which makes it seem like he could have done more.
Hennig cut his teeth in the AWA, the promotion that made his father Larry the Ax Hennig, a star attraction. Though he had a short run with WWE in the early 1980s, he would return to the AWA and truly make a mark.
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He partnered with Scott Hall, who was a young lion at the time, and the pair were a celebrated champion tag team as babyfaces. When the team split up, Hennig would go on to rule as AWA world heavyweight champion for nearly a year.
Curt wound up back in the WWE again, which is where he debuted his Mr. Perfect gimmick for the first time. Hennig was seen in various vignettes before he actually made his wrestling debut, doing such feats as throwing himself a football pass and hitting a home run off Baseball HOF pitcher Wade Boggs.
Hennig would become Intercontinental champion, and would even challenge Hulk Hogan for the WWE world title, though he never beat the Hulkster. Hennig ended up in WCW as part of a nWo/four Horsemen angle, where he turned on Ric Flair and became a member of Hogan's group.
Hennig would end up as a member of the West Texas Rednecks, a stable whose sole reason for existing was facing off against Master P's no limit soldier faction. The Rednecks were intended to be the heels in the feud, but fan response turned them into babyfaces.
After WCW was bought by WWE, Hennig made a surprising return to McMahon's promotion, where his career would tragically end after his untimely death.
Hennig had a great career, but it seems like he should have held the big belt in either WCW or WWE, if not both.
Why he wasn't a bigger star: Hennig was a pure wrestler when over the top gimmicks were the rage. Later, when he joined WCW there were so many legendary talents in the promotion that he never really got the main spotlight.