#2 Bray Wyatt
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The Eater of the Worlds was being regarded as a gimmick that would last for a long time. Bray Wyatt was seen as a replacement for The Undertaker, who was at the end of his journey as a WWE Superstar.
WWE somehow managed to turn Bray Wyatt into a WrestleMania jobber. Wyatt faced off against John Cena at WrestleMania 30 in a losing effort. He lost to The Undertaker at WrestleMania 31, missed the 32nd edition, and finally lost to Randy Orton for the WWE championship at WrestleMania 33.
Wyatt has been out with an injury for a while and there's no sign of him returning any time soon. It's a shame that WWE turned this white-hot NXT prospect into what he is today. Husky Harris turned from a bland Nexus member to a main event caliber player, only to be sent back to the list of NXT failures.
Also read: 3 times Vince screwed a wrestler at the last moment