#3 Pete Dunne
UK Champion Pete Dunne is just 25 years of age but could be moved to the main roster pretty soon considering how much he has grown over the last year or so. Dunne impressed in the 2019 Royal Rumble match and has put on great matches on NXT as well.
Dunne's never-say-die attitude, as well as incredible skills in the ring, and his reputation of being a brawler could fit in well with the mercenary nature of The Shield.
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The UK Champion also shows no fear, even challenging the Universal Champion Brock Lesnar, something that would go down well with fans as that is the kind of spirit that they would like to see in a babyface on WWE television.
But, it may take a while till we see Dunne in the main roster, at least until he becomes a top player in NXT, competing for the NXT Championship.