#1. The Undertaker

This may have been an unusual entry to this list anytime pre-April. However, The Undertaker's change in gimmick and excellent Boneyard match against AJ Styles meant that fans were hyped about seeing The Undertaker again.
In all honesty, a change in character was desperately needed for The Undertaker. While The Deadman gimmick will always be the biggest part of his legacy, the change in character was something that needed to be done a long time ago.
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Instead, he had a few years where he hardly had any memorable moments or matches and had to deal with several nagging injuries. The documentary The Last Ride on the WWE Network gives a great insight into why he continued despite all the physical struggle and constant criticism.
Ultimately, it looks like he could be sticking around for a while longer and if he's continuing with this new gimmick, then there's no doubt that he'll make a big difference with his appearances. The anticipation of seeing the "new" Undertaker along would create enough hype for his match.
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