#4. The Undertaker
Sure, the Undertaker has the longest WrestleMania unbeaten streak and will almost certainly never lose that record. But what's the point of having that record and being a seven-time World Champion if you've never won The King of the Ring?
Okay, so perhaps, like The Rock, The Undertaker didn't need to win that title to have a Hall of Fame worthy career, but it's slightly odd that a Superstar as dominant and iconic as The Deadman never had a reign as King of the Ring winner.
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It's worse when you consider that 'Taker entered two King of the Ring tournaments and failed to make it to the finals in either. In 1991, The Undertaker and his opponent Sid Justice were jointly disqualified in the Quarter Finals. And in the second one in 1995, he was eliminated by the man who would go on to win it, Mabel.
Yet, whilst The Undertaker never became a King of the Ring, he has provided his fair share of memorable King of the Ring pay-per-view moments.