#3. Zack Gibson
Zack Gibson is not a household name for many casual WWE fans but they will get to know him better when he gets called up to the main roster. For those who do not know, Gibson is the winner of the 2018 United Kingdom Championship Tournament. He earned a title shot against Pete Dunne for the UK Championship but failed.
Despite that, Gibson introduced himself to the WWE in a big way. He showed the qualities of a top heel during his run in the UK Tournament. He managed to work the crowd into hating him due to his Scouse accent. He is a natural in getting heat and it was evident during his debut year in the WWE.
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If Gibson can maintain his momentum as a top heel in the NXT UK brand, there is a chance that he will succeed on the main roster as one of the best heels in the company. Currently, he is one of the top heels in developmental along with NXT Champion, Tommaso Ciampa.